From 0107f2403669f764ab726d0d404e35bb9447bbcc Mon Sep 17 00:00:00 2001 From: Masahiro Yamada Date: Mon, 16 Mar 2015 16:43:22 +0900 Subject: ARM: zynq: move SoC sources to mach-zynq Move arch/arm/cpu/armv7/zynq/* -> arch/arm/mach-zynq/* Signed-off-by: Masahiro Yamada Signed-off-by: Michal Simek --- arch/arm/Kconfig | 2 +- arch/arm/Makefile | 1 + arch/arm/cpu/armv7/Makefile | 1 - arch/arm/cpu/armv7/zynq/Kconfig | 43 --- arch/arm/cpu/armv7/zynq/Makefile | 18 - arch/arm/cpu/armv7/zynq/clk.c | 664 -------------------------------- arch/arm/cpu/armv7/zynq/cpu.c | 67 ---- arch/arm/cpu/armv7/zynq/ddrc.c | 50 --- arch/arm/cpu/armv7/zynq/lowlevel_init.S | 26 -- arch/arm/cpu/armv7/zynq/slcr.c | 203 ---------- arch/arm/cpu/armv7/zynq/spl.c | 90 ----- arch/arm/cpu/armv7/zynq/timer.c | 168 -------- arch/arm/cpu/armv7/zynq/u-boot-spl.lds | 62 --- arch/arm/cpu/armv7/zynq/u-boot.lds | 105 ----- arch/arm/mach-zynq/Kconfig | 43 +++ arch/arm/mach-zynq/Makefile | 18 + arch/arm/mach-zynq/clk.c | 664 ++++++++++++++++++++++++++++++++ arch/arm/mach-zynq/cpu.c | 67 ++++ arch/arm/mach-zynq/ddrc.c | 50 +++ arch/arm/mach-zynq/lowlevel_init.S | 26 ++ arch/arm/mach-zynq/slcr.c | 203 ++++++++++ arch/arm/mach-zynq/spl.c | 90 +++++ arch/arm/mach-zynq/timer.c | 168 ++++++++ arch/arm/mach-zynq/u-boot-spl.lds | 62 +++ arch/arm/mach-zynq/u-boot.lds | 105 +++++ 25 files changed, 1498 insertions(+), 1498 deletions(-) delete mode 100644 arch/arm/cpu/armv7/zynq/Kconfig delete mode 100644 arch/arm/cpu/armv7/zynq/Makefile delete mode 100644 arch/arm/cpu/armv7/zynq/clk.c delete mode 100644 arch/arm/cpu/armv7/zynq/cpu.c delete mode 100644 arch/arm/cpu/armv7/zynq/ddrc.c delete mode 100644 arch/arm/cpu/armv7/zynq/lowlevel_init.S delete mode 100644 arch/arm/cpu/armv7/zynq/slcr.c delete mode 100644 arch/arm/cpu/armv7/zynq/spl.c delete mode 100644 arch/arm/cpu/armv7/zynq/timer.c delete mode 100644 arch/arm/cpu/armv7/zynq/u-boot-spl.lds delete mode 100644 arch/arm/cpu/armv7/zynq/u-boot.lds create mode 100644 arch/arm/mach-zynq/Kconfig create mode 100644 arch/arm/mach-zynq/Makefile create mode 100644 arch/arm/mach-zynq/clk.c create mode 100644 arch/arm/mach-zynq/cpu.c create mode 100644 arch/arm/mach-zynq/ddrc.c create mode 100644 arch/arm/mach-zynq/lowlevel_init.S create mode 100644 arch/arm/mach-zynq/slcr.c create mode 100644 arch/arm/mach-zynq/spl.c create mode 100644 arch/arm/mach-zynq/timer.c create mode 100644 arch/arm/mach-zynq/u-boot-spl.lds create mode 100644 arch/arm/mach-zynq/u-boot.lds (limited to 'arch') diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index 5f21b59ba8..21cd1c8cdf 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -832,7 +832,7 @@ source "arch/arm/mach-uniphier/Kconfig" source "arch/arm/mach-versatile/Kconfig" -source "arch/arm/cpu/armv7/zynq/Kconfig" +source "arch/arm/mach-zynq/Kconfig" source "arch/arm/cpu/armv7/Kconfig" diff --git a/arch/arm/Makefile b/arch/arm/Makefile index bd4749c55e..5705d6402b 100644 --- a/arch/arm/Makefile +++ b/arch/arm/Makefile @@ -55,6 +55,7 @@ machine-$(CONFIG_ORION5X) += orion5x machine-$(CONFIG_TEGRA) += tegra machine-$(CONFIG_ARCH_UNIPHIER) += uniphier machine-$(CONFIG_ARCH_VERSATILE) += versatile +machine-$(CONFIG_ZYNQ) += zynq machdirs := $(patsubst %,arch/arm/mach-%/,$(machine-y)) diff --git a/arch/arm/cpu/armv7/Makefile b/arch/arm/cpu/armv7/Makefile index 21fc03b97e..3c991e152d 100644 --- a/arch/arm/cpu/armv7/Makefile +++ b/arch/arm/cpu/armv7/Makefile @@ -56,4 +56,3 @@ obj-$(if $(filter stv0991,$(SOC)),y) += stv0991/ obj-$(CONFIG_ARCH_SUNXI) += sunxi/ obj-$(CONFIG_U8500) += u8500/ obj-$(CONFIG_VF610) += vf610/ -obj-$(CONFIG_ZYNQ) += zynq/ diff --git a/arch/arm/cpu/armv7/zynq/Kconfig b/arch/arm/cpu/armv7/zynq/Kconfig deleted file mode 100644 index 26e570eb66..0000000000 --- a/arch/arm/cpu/armv7/zynq/Kconfig +++ /dev/null @@ -1,43 +0,0 @@ -if ZYNQ - -choice - prompt "Xilinx Zynq board select" - -config TARGET_ZYNQ_ZED - bool "Zynq ZedBoard" - -config TARGET_ZYNQ_MICROZED - bool "Zynq MicroZed" - -config TARGET_ZYNQ_PICOZED - bool "Zynq PicoZed" - -config TARGET_ZYNQ_ZC70X - bool "Zynq ZC702/ZC706 Board" - -config TARGET_ZYNQ_ZC770 - bool "Zynq ZC770 Board" - -config TARGET_ZYNQ_ZYBO - bool "Zynq Zybo Board" - -endchoice - -config SYS_BOARD - default "zynq" - -config SYS_VENDOR - default "xilinx" - -config SYS_SOC - default "zynq" - -config SYS_CONFIG_NAME - default "zynq_zed" if TARGET_ZYNQ_ZED - default "zynq_microzed" if TARGET_ZYNQ_MICROZED - default "zynq_picozed" if TARGET_ZYNQ_PICOZED - default "zynq_zc70x" if TARGET_ZYNQ_ZC70X - default "zynq_zc770" if TARGET_ZYNQ_ZC770 - default "zynq_zybo" if TARGET_ZYNQ_ZYBO - -endif diff --git a/arch/arm/cpu/armv7/zynq/Makefile b/arch/arm/cpu/armv7/zynq/Makefile deleted file mode 100644 index bf29b4d396..0000000000 --- a/arch/arm/cpu/armv7/zynq/Makefile +++ /dev/null @@ -1,18 +0,0 @@ -# -# (C) Copyright 2000-2003 -# Wolfgang Denk, DENX Software Engineering, wd@denx.de. -# -# (C) Copyright 2008 -# Guennadi Liakhovetki, DENX Software Engineering, -# -# SPDX-License-Identifier: GPL-2.0+ -# - -obj-y := timer.o -obj-y += cpu.o -obj-y += ddrc.o -obj-y += slcr.o -obj-y += clk.o -obj-y += lowlevel_init.o -AFLAGS_lowlevel_init.o := -mfpu=neon -obj-$(CONFIG_SPL_BUILD) += spl.o diff --git a/arch/arm/cpu/armv7/zynq/clk.c b/arch/arm/cpu/armv7/zynq/clk.c deleted file mode 100644 index d2885dc2b9..0000000000 --- a/arch/arm/cpu/armv7/zynq/clk.c +++ /dev/null @@ -1,664 +0,0 @@ -/* - * Copyright (C) 2013 Soren Brinkmann - * Copyright (C) 2013 Xilinx, Inc. All rights reserved. - * - * SPDX-License-Identifier: GPL-2.0+ - */ -#include -#include -#include -#include -#include -#include - -/* Board oscillator frequency */ -#ifndef CONFIG_ZYNQ_PS_CLK_FREQ -# define CONFIG_ZYNQ_PS_CLK_FREQ 33333333UL -#endif - -/* Register bitfield defines */ -#define PLLCTRL_FBDIV_MASK 0x7f000 -#define PLLCTRL_FBDIV_SHIFT 12 -#define PLLCTRL_BPFORCE_MASK (1 << 4) -#define PLLCTRL_PWRDWN_MASK 2 -#define PLLCTRL_PWRDWN_SHIFT 1 -#define PLLCTRL_RESET_MASK 1 -#define PLLCTRL_RESET_SHIFT 0 - -#define ZYNQ_CLK_MAXDIV 0x3f -#define CLK_CTRL_DIV1_SHIFT 20 -#define CLK_CTRL_DIV1_MASK (ZYNQ_CLK_MAXDIV << CLK_CTRL_DIV1_SHIFT) -#define CLK_CTRL_DIV0_SHIFT 8 -#define CLK_CTRL_DIV0_MASK (ZYNQ_CLK_MAXDIV << CLK_CTRL_DIV0_SHIFT) -#define CLK_CTRL_SRCSEL_SHIFT 4 -#define CLK_CTRL_SRCSEL_MASK (0x3 << CLK_CTRL_SRCSEL_SHIFT) - -#define CLK_CTRL_DIV2X_SHIFT 26 -#define CLK_CTRL_DIV2X_MASK (ZYNQ_CLK_MAXDIV << CLK_CTRL_DIV2X_SHIFT) -#define CLK_CTRL_DIV3X_SHIFT 20 -#define CLK_CTRL_DIV3X_MASK (ZYNQ_CLK_MAXDIV << CLK_CTRL_DIV3X_SHIFT) - -#define ZYNQ_CLKMUX_SEL_0 0 -#define ZYNQ_CLKMUX_SEL_1 1 -#define ZYNQ_CLKMUX_SEL_2 2 -#define ZYNQ_CLKMUX_SEL_3 3 - -DECLARE_GLOBAL_DATA_PTR; - -struct clk; - -/** - * struct clk_ops: - * @set_rate: Function pointer to set_rate() implementation - * @get_rate: Function pointer to get_rate() implementation - */ -struct clk_ops { - int (*set_rate)(struct clk *clk, unsigned long rate); - unsigned long (*get_rate)(struct clk *clk); -}; - -/** - * struct clk: - * @name: Clock name - * @frequency: Currenct frequency - * @parent: Parent clock - * @flags: Clock flags - * @reg: Clock control register - * @ops: Clock operations - */ -struct clk { - char *name; - unsigned long frequency; - enum zynq_clk parent; - unsigned int flags; - u32 *reg; - struct clk_ops ops; -}; -#define ZYNQ_CLK_FLAGS_HAS_2_DIVS 1 - -static struct clk clks[clk_max]; - -/** - * __zynq_clk_cpu_get_parent() - Decode clock multiplexer - * @srcsel: Mux select value - * Returns the clock identifier associated with the selected mux input. - */ -static int __zynq_clk_cpu_get_parent(unsigned int srcsel) -{ - unsigned int ret; - - switch (srcsel) { - case ZYNQ_CLKMUX_SEL_0: - case ZYNQ_CLKMUX_SEL_1: - ret = armpll_clk; - break; - case ZYNQ_CLKMUX_SEL_2: - ret = ddrpll_clk; - break; - case ZYNQ_CLKMUX_SEL_3: - ret = iopll_clk; - break; - default: - ret = armpll_clk; - break; - } - - return ret; -} - -/** - * ddr2x_get_rate() - Get clock rate of DDR2x clock - * @clk: Clock handle - * Returns the current clock rate of @clk. - */ -static unsigned long ddr2x_get_rate(struct clk *clk) -{ - u32 clk_ctrl = readl(clk->reg); - u32 div = (clk_ctrl & CLK_CTRL_DIV2X_MASK) >> CLK_CTRL_DIV2X_SHIFT; - - return DIV_ROUND_CLOSEST(zynq_clk_get_rate(clk->parent), div); -} - -/** - * ddr3x_get_rate() - Get clock rate of DDR3x clock - * @clk: Clock handle - * Returns the current clock rate of @clk. - */ -static unsigned long ddr3x_get_rate(struct clk *clk) -{ - u32 clk_ctrl = readl(clk->reg); - u32 div = (clk_ctrl & CLK_CTRL_DIV3X_MASK) >> CLK_CTRL_DIV3X_SHIFT; - - return DIV_ROUND_CLOSEST(zynq_clk_get_rate(clk->parent), div); -} - -static void init_ddr_clocks(void) -{ - u32 div0, div1; - unsigned long prate = zynq_clk_get_rate(ddrpll_clk); - u32 clk_ctrl = readl(&slcr_base->ddr_clk_ctrl); - - /* DDR2x */ - clks[ddr2x_clk].reg = &slcr_base->ddr_clk_ctrl; - clks[ddr2x_clk].parent = ddrpll_clk; - clks[ddr2x_clk].name = "ddr_2x"; - clks[ddr2x_clk].frequency = ddr2x_get_rate(&clks[ddr2x_clk]); - clks[ddr2x_clk].ops.get_rate = ddr2x_get_rate; - - /* DDR3x */ - clks[ddr3x_clk].reg = &slcr_base->ddr_clk_ctrl; - clks[ddr3x_clk].parent = ddrpll_clk; - clks[ddr3x_clk].name = "ddr_3x"; - clks[ddr3x_clk].frequency = ddr3x_get_rate(&clks[ddr3x_clk]); - clks[ddr3x_clk].ops.get_rate = ddr3x_get_rate; - - /* DCI */ - clk_ctrl = readl(&slcr_base->dci_clk_ctrl); - div0 = (clk_ctrl & CLK_CTRL_DIV0_MASK) >> CLK_CTRL_DIV0_SHIFT; - div1 = (clk_ctrl & CLK_CTRL_DIV1_MASK) >> CLK_CTRL_DIV1_SHIFT; - clks[dci_clk].reg = &slcr_base->dci_clk_ctrl; - clks[dci_clk].parent = ddrpll_clk; - clks[dci_clk].frequency = DIV_ROUND_CLOSEST( - DIV_ROUND_CLOSEST(prate, div0), div1); - clks[dci_clk].name = "dci"; - - gd->bd->bi_ddr_freq = clks[ddr3x_clk].frequency / 1000000; -} - -static void init_cpu_clocks(void) -{ - int clk_621; - u32 reg, div, srcsel; - enum zynq_clk parent; - - reg = readl(&slcr_base->arm_clk_ctrl); - clk_621 = readl(&slcr_base->clk_621_true) & 1; - div = (reg & CLK_CTRL_DIV0_MASK) >> CLK_CTRL_DIV0_SHIFT; - srcsel = (reg & CLK_CTRL_SRCSEL_MASK) >> CLK_CTRL_SRCSEL_SHIFT; - parent = __zynq_clk_cpu_get_parent(srcsel); - - /* cpu clocks */ - clks[cpu_6or4x_clk].reg = &slcr_base->arm_clk_ctrl; - clks[cpu_6or4x_clk].parent = parent; - clks[cpu_6or4x_clk].frequency = DIV_ROUND_CLOSEST( - zynq_clk_get_rate(parent), div); - clks[cpu_6or4x_clk].name = "cpu_6or4x"; - - clks[cpu_3or2x_clk].reg = &slcr_base->arm_clk_ctrl; - clks[cpu_3or2x_clk].parent = cpu_6or4x_clk; - clks[cpu_3or2x_clk].frequency = zynq_clk_get_rate(cpu_6or4x_clk) / 2; - clks[cpu_3or2x_clk].name = "cpu_3or2x"; - - clks[cpu_2x_clk].reg = &slcr_base->arm_clk_ctrl; - clks[cpu_2x_clk].parent = cpu_6or4x_clk; - clks[cpu_2x_clk].frequency = zynq_clk_get_rate(cpu_6or4x_clk) / - (2 + clk_621); - clks[cpu_2x_clk].name = "cpu_2x"; - - clks[cpu_1x_clk].reg = &slcr_base->arm_clk_ctrl; - clks[cpu_1x_clk].parent = cpu_6or4x_clk; - clks[cpu_1x_clk].frequency = zynq_clk_get_rate(cpu_6or4x_clk) / - (4 + 2 * clk_621); - clks[cpu_1x_clk].name = "cpu_1x"; -} - -/** - * periph_calc_two_divs() - Calculate clock dividers - * @cur_rate: Current clock rate - * @tgt_rate: Target clock rate - * @prate: Parent clock rate - * @div0: First divider (output) - * @div1: Second divider (output) - * Returns the actual clock rate possible. - * - * Calculates clock dividers for clocks with two 6-bit dividers. - */ -static unsigned long periph_calc_two_divs(unsigned long cur_rate, - unsigned long tgt_rate, unsigned long prate, u32 *div0, - u32 *div1) -{ - long err, best_err = (long)(~0UL >> 1); - unsigned long rate, best_rate = 0; - u32 d0, d1; - - for (d0 = 1; d0 <= ZYNQ_CLK_MAXDIV; d0++) { - for (d1 = 1; d1 <= ZYNQ_CLK_MAXDIV >> 1; d1++) { - rate = DIV_ROUND_CLOSEST(DIV_ROUND_CLOSEST(prate, d0), - d1); - err = abs(rate - tgt_rate); - - if (err < best_err) { - *div0 = d0; - *div1 = d1; - best_err = err; - best_rate = rate; - } - } - } - - return best_rate; -} - -/** - * zynq_clk_periph_set_rate() - Set clock rate - * @clk: Handle of the peripheral clock - * @rate: New clock rate - * Sets the clock frequency of @clk to @rate. Returns zero on success. - */ -static int zynq_clk_periph_set_rate(struct clk *clk, - unsigned long rate) -{ - u32 ctrl, div0 = 0, div1 = 0; - unsigned long prate, new_rate, cur_rate = clk->frequency; - - ctrl = readl(clk->reg); - prate = zynq_clk_get_rate(clk->parent); - ctrl &= ~CLK_CTRL_DIV0_MASK; - - if (clk->flags & ZYNQ_CLK_FLAGS_HAS_2_DIVS) { - ctrl &= ~CLK_CTRL_DIV1_MASK; - new_rate = periph_calc_two_divs(cur_rate, rate, prate, &div0, - &div1); - ctrl |= div1 << CLK_CTRL_DIV1_SHIFT; - } else { - div0 = DIV_ROUND_CLOSEST(prate, rate); - div0 &= ZYNQ_CLK_MAXDIV; - new_rate = DIV_ROUND_CLOSEST(rate, div0); - } - - /* write new divs to hardware */ - ctrl |= div0 << CLK_CTRL_DIV0_SHIFT; - writel(ctrl, clk->reg); - - /* update frequency in clk framework */ - clk->frequency = new_rate; - - return 0; -} - -/** - * zynq_clk_periph_get_rate() - Get clock rate - * @clk: Handle of the peripheral clock - * Returns the current clock rate of @clk. - */ -static unsigned long zynq_clk_periph_get_rate(struct clk *clk) -{ - u32 clk_ctrl = readl(clk->reg); - u32 div0 = (clk_ctrl & CLK_CTRL_DIV0_MASK) >> CLK_CTRL_DIV0_SHIFT; - u32 div1 = 1; - - if (clk->flags & ZYNQ_CLK_FLAGS_HAS_2_DIVS) - div1 = (clk_ctrl & CLK_CTRL_DIV1_MASK) >> CLK_CTRL_DIV1_SHIFT; - - /* a register value of zero == division by 1 */ - if (!div0) - div0 = 1; - if (!div1) - div1 = 1; - - return - DIV_ROUND_CLOSEST( - DIV_ROUND_CLOSEST(zynq_clk_get_rate(clk->parent), div0), - div1); -} - -/** - * __zynq_clk_periph_get_parent() - Decode clock multiplexer - * @srcsel: Mux select value - * Returns the clock identifier associated with the selected mux input. - */ -static enum zynq_clk __zynq_clk_periph_get_parent(u32 srcsel) -{ - switch (srcsel) { - case ZYNQ_CLKMUX_SEL_0: - case ZYNQ_CLKMUX_SEL_1: - return iopll_clk; - case ZYNQ_CLKMUX_SEL_2: - return armpll_clk; - case ZYNQ_CLKMUX_SEL_3: - return ddrpll_clk; - default: - return 0; - } -} - -/** - * zynq_clk_periph_get_parent() - Decode clock multiplexer - * @clk: Clock handle - * Returns the clock identifier associated with the selected mux input. - */ -static enum zynq_clk zynq_clk_periph_get_parent(struct clk *clk) -{ - u32 clk_ctrl = readl(clk->reg); - u32 srcsel = (clk_ctrl & CLK_CTRL_SRCSEL_MASK) >> CLK_CTRL_SRCSEL_SHIFT; - - return __zynq_clk_periph_get_parent(srcsel); -} - -/** - * zynq_clk_register_periph_clk() - Set up a peripheral clock with the framework - * @clk: Pointer to struct clk for the clock - * @ctrl: Clock control register - * @name: PLL name - * @two_divs: Indicates whether the clock features one or two dividers - */ -static int zynq_clk_register_periph_clk(struct clk *clk, u32 *ctrl, char *name, - bool two_divs) -{ - clk->name = name; - clk->reg = ctrl; - if (two_divs) - clk->flags = ZYNQ_CLK_FLAGS_HAS_2_DIVS; - clk->parent = zynq_clk_periph_get_parent(clk); - clk->frequency = zynq_clk_periph_get_rate(clk); - clk->ops.get_rate = zynq_clk_periph_get_rate; - clk->ops.set_rate = zynq_clk_periph_set_rate; - - return 0; -} - -static void init_periph_clocks(void) -{ - zynq_clk_register_periph_clk(&clks[gem0_clk], &slcr_base->gem0_clk_ctrl, - "gem0", 1); - zynq_clk_register_periph_clk(&clks[gem1_clk], &slcr_base->gem1_clk_ctrl, - "gem1", 1); - - zynq_clk_register_periph_clk(&clks[smc_clk], &slcr_base->smc_clk_ctrl, - "smc", 0); - - zynq_clk_register_periph_clk(&clks[lqspi_clk], - &slcr_base->lqspi_clk_ctrl, "lqspi", 0); - - zynq_clk_register_periph_clk(&clks[sdio0_clk], - &slcr_base->sdio_clk_ctrl, "sdio0", 0); - zynq_clk_register_periph_clk(&clks[sdio1_clk], - &slcr_base->sdio_clk_ctrl, "sdio1", 0); - - zynq_clk_register_periph_clk(&clks[spi0_clk], &slcr_base->spi_clk_ctrl, - "spi0", 0); - zynq_clk_register_periph_clk(&clks[spi1_clk], &slcr_base->spi_clk_ctrl, - "spi1", 0); - - zynq_clk_register_periph_clk(&clks[uart0_clk], - &slcr_base->uart_clk_ctrl, "uart0", 0); - zynq_clk_register_periph_clk(&clks[uart1_clk], - &slcr_base->uart_clk_ctrl, "uart1", 0); - - zynq_clk_register_periph_clk(&clks[dbg_trc_clk], - &slcr_base->dbg_clk_ctrl, "dbg_trc", 0); - zynq_clk_register_periph_clk(&clks[dbg_apb_clk], - &slcr_base->dbg_clk_ctrl, "dbg_apb", 0); - - zynq_clk_register_periph_clk(&clks[pcap_clk], - &slcr_base->pcap_clk_ctrl, "pcap", 0); - - zynq_clk_register_periph_clk(&clks[fclk0_clk], - &slcr_base->fpga0_clk_ctrl, "fclk0", 1); - zynq_clk_register_periph_clk(&clks[fclk1_clk], - &slcr_base->fpga1_clk_ctrl, "fclk1", 1); - zynq_clk_register_periph_clk(&clks[fclk2_clk], - &slcr_base->fpga2_clk_ctrl, "fclk2", 1); - zynq_clk_register_periph_clk(&clks[fclk3_clk], - &slcr_base->fpga3_clk_ctrl, "fclk3", 1); -} - -/** - * zynq_clk_register_aper_clk() - Set up a APER clock with the framework - * @clk: Pointer to struct clk for the clock - * @ctrl: Clock control register - * @name: PLL name - */ -static void zynq_clk_register_aper_clk(struct clk *clk, u32 *ctrl, char *name) -{ - clk->name = name; - clk->reg = ctrl; - clk->parent = cpu_1x_clk; - clk->frequency = zynq_clk_get_rate(clk->parent); -} - -static void init_aper_clocks(void) -{ - zynq_clk_register_aper_clk(&clks[usb0_aper_clk], - &slcr_base->aper_clk_ctrl, "usb0_aper"); - zynq_clk_register_aper_clk(&clks[usb1_aper_clk], - &slcr_base->aper_clk_ctrl, "usb1_aper"); - - zynq_clk_register_aper_clk(&clks[gem0_aper_clk], - &slcr_base->aper_clk_ctrl, "gem0_aper"); - zynq_clk_register_aper_clk(&clks[gem1_aper_clk], - &slcr_base->aper_clk_ctrl, "gem1_aper"); - - zynq_clk_register_aper_clk(&clks[sdio0_aper_clk], - &slcr_base->aper_clk_ctrl, "sdio0_aper"); - zynq_clk_register_aper_clk(&clks[sdio1_aper_clk], - &slcr_base->aper_clk_ctrl, "sdio1_aper"); - - zynq_clk_register_aper_clk(&clks[spi0_aper_clk], - &slcr_base->aper_clk_ctrl, "spi0_aper"); - zynq_clk_register_aper_clk(&clks[spi1_aper_clk], - &slcr_base->aper_clk_ctrl, "spi1_aper"); - - zynq_clk_register_aper_clk(&clks[can0_aper_clk], - &slcr_base->aper_clk_ctrl, "can0_aper"); - zynq_clk_register_aper_clk(&clks[can1_aper_clk], - &slcr_base->aper_clk_ctrl, "can1_aper"); - - zynq_clk_register_aper_clk(&clks[i2c0_aper_clk], - &slcr_base->aper_clk_ctrl, "i2c0_aper"); - zynq_clk_register_aper_clk(&clks[i2c1_aper_clk], - &slcr_base->aper_clk_ctrl, "i2c1_aper"); - - zynq_clk_register_aper_clk(&clks[uart0_aper_clk], - &slcr_base->aper_clk_ctrl, "uart0_aper"); - zynq_clk_register_aper_clk(&clks[uart1_aper_clk], - &slcr_base->aper_clk_ctrl, "uart1_aper"); - - zynq_clk_register_aper_clk(&clks[gpio_aper_clk], - &slcr_base->aper_clk_ctrl, "gpio_aper"); - - zynq_clk_register_aper_clk(&clks[lqspi_aper_clk], - &slcr_base->aper_clk_ctrl, "lqspi_aper"); - - zynq_clk_register_aper_clk(&clks[smc_aper_clk], - &slcr_base->aper_clk_ctrl, "smc_aper"); -} - -/** - * __zynq_clk_pll_get_rate() - Get PLL rate - * @addr: Address of the PLL's control register - * Returns the current PLL output rate. - */ -static unsigned long __zynq_clk_pll_get_rate(u32 *addr) -{ - u32 reg, mul, bypass; - - reg = readl(addr); - bypass = reg & PLLCTRL_BPFORCE_MASK; - if (bypass) - mul = 1; - else - mul = (reg & PLLCTRL_FBDIV_MASK) >> PLLCTRL_FBDIV_SHIFT; - - return CONFIG_ZYNQ_PS_CLK_FREQ * mul; -} - -/** - * zynq_clk_pll_get_rate() - Get PLL rate - * @pll: Handle of the PLL - * Returns the current clock rate of @pll. - */ -static unsigned long zynq_clk_pll_get_rate(struct clk *pll) -{ - return __zynq_clk_pll_get_rate(pll->reg); -} - -/** - * zynq_clk_register_pll() - Set up a PLL with the framework - * @clk: Pointer to struct clk for the PLL - * @ctrl: PLL control register - * @name: PLL name - * @prate: PLL input clock rate - */ -static void zynq_clk_register_pll(struct clk *clk, u32 *ctrl, char *name, - unsigned long prate) -{ - clk->name = name; - clk->reg = ctrl; - clk->frequency = zynq_clk_pll_get_rate(clk); - clk->ops.get_rate = zynq_clk_pll_get_rate; -} - -/** - * clkid_2_register() - Get clock control register - * @id: Clock identifier of one of the PLLs - * Returns the address of the requested PLL's control register. - */ -static u32 *clkid_2_register(enum zynq_clk id) -{ - switch (id) { - case armpll_clk: - return &slcr_base->arm_pll_ctrl; - case ddrpll_clk: - return &slcr_base->ddr_pll_ctrl; - case iopll_clk: - return &slcr_base->io_pll_ctrl; - default: - return &slcr_base->io_pll_ctrl; - } -} - -/* API */ -/** - * zynq_clk_early_init() - Early init for the clock framework - * - * This function is called from before relocation and sets up the CPU clock - * frequency in the global data struct. - */ -void zynq_clk_early_init(void) -{ - u32 reg = readl(&slcr_base->arm_clk_ctrl); - u32 div = (reg & CLK_CTRL_DIV0_MASK) >> CLK_CTRL_DIV0_SHIFT; - u32 srcsel = (reg & CLK_CTRL_SRCSEL_MASK) >> CLK_CTRL_SRCSEL_SHIFT; - enum zynq_clk parent = __zynq_clk_cpu_get_parent(srcsel); - u32 *pllreg = clkid_2_register(parent); - unsigned long prate = __zynq_clk_pll_get_rate(pllreg); - - if (!div) - div = 1; - - gd->cpu_clk = DIV_ROUND_CLOSEST(prate, div); -} - -/** - * get_uart_clk() - Get UART input frequency - * @dev_index: UART ID - * Returns UART input clock frequency in Hz. - * - * Compared to zynq_clk_get_rate() this function is designed to work before - * relocation and can be called when the serial UART is set up. - */ -unsigned long get_uart_clk(int dev_index) -{ - u32 reg = readl(&slcr_base->uart_clk_ctrl); - u32 div = (reg & CLK_CTRL_DIV0_MASK) >> CLK_CTRL_DIV0_SHIFT; - u32 srcsel = (reg & CLK_CTRL_SRCSEL_MASK) >> CLK_CTRL_SRCSEL_SHIFT; - enum zynq_clk parent = __zynq_clk_periph_get_parent(srcsel); - u32 *pllreg = clkid_2_register(parent); - unsigned long prate = __zynq_clk_pll_get_rate(pllreg); - - if (!div) - div = 1; - - return DIV_ROUND_CLOSEST(prate, div); -} - -/** - * set_cpu_clk_info() - Initialize clock framework - * Always returns zero. - * - * This function is called from common code after relocation and sets up the - * clock framework. The framework must not be used before this function had been - * called. - */ -int set_cpu_clk_info(void) -{ - zynq_clk_register_pll(&clks[armpll_clk], &slcr_base->arm_pll_ctrl, - "armpll", CONFIG_ZYNQ_PS_CLK_FREQ); - zynq_clk_register_pll(&clks[ddrpll_clk], &slcr_base->ddr_pll_ctrl, - "ddrpll", CONFIG_ZYNQ_PS_CLK_FREQ); - zynq_clk_register_pll(&clks[iopll_clk], &slcr_base->io_pll_ctrl, - "iopll", CONFIG_ZYNQ_PS_CLK_FREQ); - - init_ddr_clocks(); - init_cpu_clocks(); - init_periph_clocks(); - init_aper_clocks(); - - gd->bd->bi_arm_freq = gd->cpu_clk / 1000000; - gd->bd->bi_dsp_freq = 0; - - return 0; -} - -/** - * zynq_clk_get_rate() - Get clock rate - * @clk: Clock identifier - * Returns the current clock rate of @clk on success or zero for an invalid - * clock id. - */ -unsigned long zynq_clk_get_rate(enum zynq_clk clk) -{ - if (clk < 0 || clk >= clk_max) - return 0; - - return clks[clk].frequency; -} - -/** - * zynq_clk_set_rate() - Set clock rate - * @clk: Clock identifier - * @rate: Requested clock rate - * Passes on the return value from the clock's set_rate() function or negative - * errno. - */ -int zynq_clk_set_rate(enum zynq_clk clk, unsigned long rate) -{ - if (clk < 0 || clk >= clk_max) - return -ENODEV; - - if (clks[clk].ops.set_rate) - return clks[clk].ops.set_rate(&clks[clk], rate); - - return -ENXIO; -} - -/** - * zynq_clk_get_name() - Get clock name - * @clk: Clock identifier - * Returns the name of @clk. - */ -const char *zynq_clk_get_name(enum zynq_clk clk) -{ - return clks[clk].name; -} - -/** - * soc_clk_dump() - Print clock frequencies - * Returns zero on success - * - * Implementation for the clk dump command. - */ -int soc_clk_dump(void) -{ - int i; - - printf("clk\t\tfrequency\n"); - for (i = 0; i < clk_max; i++) { - const char *name = zynq_clk_get_name(i); - if (name) - printf("%10s%20lu\n", name, zynq_clk_get_rate(i)); - } - - return 0; -} diff --git a/arch/arm/cpu/armv7/zynq/cpu.c b/arch/arm/cpu/armv7/zynq/cpu.c deleted file mode 100644 index 914b1feb68..0000000000 --- a/arch/arm/cpu/armv7/zynq/cpu.c +++ /dev/null @@ -1,67 +0,0 @@ -/* - * Copyright (C) 2012 Michal Simek - * Copyright (C) 2012 Xilinx, Inc. All rights reserved. - * - * SPDX-License-Identifier: GPL-2.0+ - */ -#include -#include -#include -#include -#include - -#define ZYNQ_SILICON_VER_MASK 0xF0000000 -#define ZYNQ_SILICON_VER_SHIFT 28 - -int arch_cpu_init(void) -{ - zynq_slcr_unlock(); -#ifndef CONFIG_SPL_BUILD - /* Device config APB, unlock the PCAP */ - writel(0x757BDF0D, &devcfg_base->unlock); - writel(0xFFFFFFFF, &devcfg_base->rom_shadow); - -#if (CONFIG_SYS_SDRAM_BASE == 0) - /* remap DDR to zero, FILTERSTART */ - writel(0, &scu_base->filter_start); - - /* OCM_CFG, Mask out the ROM, map ram into upper addresses */ - writel(0x1F, &slcr_base->ocm_cfg); - /* FPGA_RST_CTRL, clear resets on AXI fabric ports */ - writel(0x0, &slcr_base->fpga_rst_ctrl); - /* Set urgent bits with register */ - writel(0x0, &slcr_base->ddr_urgent_sel); - /* Urgent write, ports S2/S3 */ - writel(0xC, &slcr_base->ddr_urgent); -#endif -#endif - zynq_clk_early_init(); - zynq_slcr_lock(); - - return 0; -} - -unsigned int zynq_get_silicon_version(void) -{ - unsigned int ver; - - ver = (readl(&devcfg_base->mctrl) & - ZYNQ_SILICON_VER_MASK) >> ZYNQ_SILICON_VER_SHIFT; - - return ver; -} - -void reset_cpu(ulong addr) -{ - zynq_slcr_cpu_reset(); - while (1) - ; -} - -#ifndef CONFIG_SYS_DCACHE_OFF -void enable_caches(void) -{ - /* Enable D-cache. I-cache is already enabled in start.S */ - dcache_enable(); -} -#endif diff --git a/arch/arm/cpu/armv7/zynq/ddrc.c b/arch/arm/cpu/armv7/zynq/ddrc.c deleted file mode 100644 index 5b20accbcb..0000000000 --- a/arch/arm/cpu/armv7/zynq/ddrc.c +++ /dev/null @@ -1,50 +0,0 @@ -/* - * Copyright (C) 2012 - 2013 Michal Simek - * Copyright (C) 2012 - 2013 Xilinx, Inc. All rights reserved. - * - * SPDX-License-Identifier: GPL-2.0+ - */ - -#include -#include -#include -#include - -DECLARE_GLOBAL_DATA_PTR; - -/* Control regsiter bitfield definitions */ -#define ZYNQ_DDRC_CTRLREG_BUSWIDTH_MASK 0xC -#define ZYNQ_DDRC_CTRLREG_BUSWIDTH_SHIFT 2 -#define ZYNQ_DDRC_CTRLREG_BUSWIDTH_16BIT 1 - -/* ECC scrub regsiter definitions */ -#define ZYNQ_DDRC_ECC_SCRUBREG_ECC_MODE_MASK 0x7 -#define ZYNQ_DDRC_ECC_SCRUBREG_ECCMODE_SECDED 0x4 - -void zynq_ddrc_init(void) -{ - u32 width, ecctype; - - width = readl(&ddrc_base->ddrc_ctrl); - width = (width & ZYNQ_DDRC_CTRLREG_BUSWIDTH_MASK) >> - ZYNQ_DDRC_CTRLREG_BUSWIDTH_SHIFT; - ecctype = (readl(&ddrc_base->ecc_scrub) & - ZYNQ_DDRC_ECC_SCRUBREG_ECC_MODE_MASK); - - /* ECC is enabled when memory is in 16bit mode and it is enabled */ - if ((ecctype == ZYNQ_DDRC_ECC_SCRUBREG_ECCMODE_SECDED) && - (width == ZYNQ_DDRC_CTRLREG_BUSWIDTH_16BIT)) { - puts("ECC enabled "); - /* - * Clear the first 1MB because it is not initialized from - * first stage bootloader. To get ECC to work all memory has - * been initialized by writing any value. - */ - /* cppcheck-suppress nullPointer */ - memset((void *)0, 0, 1 * 1024 * 1024); - - gd->ram_size /= 2; - } else { - puts("ECC disabled "); - } -} diff --git a/arch/arm/cpu/armv7/zynq/lowlevel_init.S b/arch/arm/cpu/armv7/zynq/lowlevel_init.S deleted file mode 100644 index 6d714b711c..0000000000 --- a/arch/arm/cpu/armv7/zynq/lowlevel_init.S +++ /dev/null @@ -1,26 +0,0 @@ -/* - * Copyright (C) 2013 Xilinx, Inc. All rights reserved. - * - * SPDX-License-Identifier: GPL-2.0+ - */ - -#include -#include -#include - -ENTRY(lowlevel_init) - - /* Enable the the VFP */ - mrc p15, 0, r1, c1, c0, 2 - orr r1, r1, #(0x3 << 20) - orr r1, r1, #(0x3 << 20) - mcr p15, 0, r1, c1, c0, 2 - isb - fmrx r1, FPEXC - orr r1,r1, #(1<<30) - fmxr FPEXC, r1 - - /* Move back to caller */ - mov pc, lr - -ENDPROC(lowlevel_init) diff --git a/arch/arm/cpu/armv7/zynq/slcr.c b/arch/arm/cpu/armv7/zynq/slcr.c deleted file mode 100644 index 05f4099aae..0000000000 --- a/arch/arm/cpu/armv7/zynq/slcr.c +++ /dev/null @@ -1,203 +0,0 @@ -/* - * Copyright (c) 2013 Xilinx Inc. - * - * SPDX-License-Identifier: GPL-2.0+ - */ - -#include -#include -#include -#include -#include -#include - -#define SLCR_LOCK_MAGIC 0x767B -#define SLCR_UNLOCK_MAGIC 0xDF0D - -#define SLCR_USB_L1_SEL 0x04 - -#define SLCR_IDCODE_MASK 0x1F000 -#define SLCR_IDCODE_SHIFT 12 - -/* - * zynq_slcr_mio_get_status - Get the status of MIO peripheral. - * - * @peri_name: Name of the peripheral for checking MIO status - * @get_pins: Pointer to array of get pin for this peripheral - * @num_pins: Number of pins for this peripheral - * @mask: Mask value - * @check_val: Required check value to get the status of periph - */ -struct zynq_slcr_mio_get_status { - const char *peri_name; - const int *get_pins; - int num_pins; - u32 mask; - u32 check_val; -}; - -static const int usb0_pins[] = { - 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39 -}; - -static const int usb1_pins[] = { - 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51 -}; - -static const struct zynq_slcr_mio_get_status mio_periphs[] = { - { - "usb0", - usb0_pins, - ARRAY_SIZE(usb0_pins), - SLCR_USB_L1_SEL, - SLCR_USB_L1_SEL, - }, - { - "usb1", - usb1_pins, - ARRAY_SIZE(usb1_pins), - SLCR_USB_L1_SEL, - SLCR_USB_L1_SEL, - }, -}; - -static int slcr_lock = 1; /* 1 means locked, 0 means unlocked */ - -void zynq_slcr_lock(void) -{ - if (!slcr_lock) { - writel(SLCR_LOCK_MAGIC, &slcr_base->slcr_lock); - slcr_lock = 1; - } -} - -void zynq_slcr_unlock(void) -{ - if (slcr_lock) { - writel(SLCR_UNLOCK_MAGIC, &slcr_base->slcr_unlock); - slcr_lock = 0; - } -} - -/* Reset the entire system */ -void zynq_slcr_cpu_reset(void) -{ - /* - * Unlock the SLCR then reset the system. - * Note that this seems to require raw i/o - * functions or there's a lockup? - */ - zynq_slcr_unlock(); - - /* - * Clear 0x0F000000 bits of reboot status register to workaround - * the FSBL not loading the bitstream after soft-reboot - * This is a temporary solution until we know more. - */ - clrbits_le32(&slcr_base->reboot_status, 0xF000000); - - writel(1, &slcr_base->pss_rst_ctrl); -} - -/* Setup clk for network */ -void zynq_slcr_gem_clk_setup(u32 gem_id, unsigned long clk_rate) -{ - int ret; - - zynq_slcr_unlock(); - - if (gem_id > 1) { - printf("Non existing GEM id %d\n", gem_id); - goto out; - } - - ret = zynq_clk_set_rate(gem0_clk + gem_id, clk_rate); - if (ret) - goto out; - - if (gem_id) { - /* Configure GEM_RCLK_CTRL */ - writel(1, &slcr_base->gem1_rclk_ctrl); - } else { - /* Configure GEM_RCLK_CTRL */ - writel(1, &slcr_base->gem0_rclk_ctrl); - } - udelay(100000); -out: - zynq_slcr_lock(); -} - -void zynq_slcr_devcfg_disable(void) -{ - u32 reg_val; - - zynq_slcr_unlock(); - - /* Disable AXI interface by asserting FPGA resets */ - writel(0xF, &slcr_base->fpga_rst_ctrl); - - /* Disable Level shifters before setting PS-PL */ - reg_val = readl(&slcr_base->lvl_shftr_en); - reg_val &= ~0xF; - writel(reg_val, &slcr_base->lvl_shftr_en); - - /* Set Level Shifters DT618760 */ - writel(0xA, &slcr_base->lvl_shftr_en); - - zynq_slcr_lock(); -} - -void zynq_slcr_devcfg_enable(void) -{ - zynq_slcr_unlock(); - - /* Set Level Shifters DT618760 */ - writel(0xF, &slcr_base->lvl_shftr_en); - - /* Enable AXI interface by de-asserting FPGA resets */ - writel(0x0, &slcr_base->fpga_rst_ctrl); - - zynq_slcr_lock(); -} - -u32 zynq_slcr_get_boot_mode(void) -{ - /* Get the bootmode register value */ - return readl(&slcr_base->boot_mode); -} - -u32 zynq_slcr_get_idcode(void) -{ - return (readl(&slcr_base->pss_idcode) & SLCR_IDCODE_MASK) >> - SLCR_IDCODE_SHIFT; -} - -/* - * zynq_slcr_get_mio_pin_status - Get the MIO pin status of peripheral. - * - * @periph: Name of the peripheral - * - * Returns count to indicate the number of pins configured for the - * given @periph. - */ -int zynq_slcr_get_mio_pin_status(const char *periph) -{ - const struct zynq_slcr_mio_get_status *mio_ptr; - int val, i, j; - int mio = 0; - - for (i = 0; i < ARRAY_SIZE(mio_periphs); i++) { - if (strcmp(periph, mio_periphs[i].peri_name) == 0) { - mio_ptr = &mio_periphs[i]; - for (j = 0; j < mio_ptr->num_pins; j++) { - val = readl(&slcr_base->mio_pin - [mio_ptr->get_pins[j]]); - if ((val & mio_ptr->mask) == mio_ptr->check_val) - mio++; - } - break; - } - } - - return mio; -} diff --git a/arch/arm/cpu/armv7/zynq/spl.c b/arch/arm/cpu/armv7/zynq/spl.c deleted file mode 100644 index 13025f034b..0000000000 --- a/arch/arm/cpu/armv7/zynq/spl.c +++ /dev/null @@ -1,90 +0,0 @@ -/* - * (C) Copyright 2014 Xilinx, Inc. Michal Simek - * - * SPDX-License-Identifier: GPL-2.0+ - */ -#include -#include - -#include -#include -#include -#include - -DECLARE_GLOBAL_DATA_PTR; - -void board_init_f(ulong dummy) -{ - ps7_init(); - - /* Clear the BSS. */ - memset(__bss_start, 0, __bss_end - __bss_start); - - preloader_console_init(); - arch_cpu_init(); - board_init_r(NULL, 0); -} - -#ifdef CONFIG_SPL_BOARD_INIT -void spl_board_init(void) -{ - board_init(); -} -#endif - -u32 spl_boot_device(void) -{ - u32 mode; - - switch ((zynq_slcr_get_boot_mode()) & ZYNQ_BM_MASK) { -#ifdef CONFIG_SPL_SPI_SUPPORT - case ZYNQ_BM_QSPI: - puts("qspi boot\n"); - mode = BOOT_DEVICE_SPI; - break; -#endif - case ZYNQ_BM_NAND: - mode = BOOT_DEVICE_NAND; - break; - case ZYNQ_BM_NOR: - mode = BOOT_DEVICE_NOR; - break; -#ifdef CONFIG_SPL_MMC_SUPPORT - case ZYNQ_BM_SD: - puts("mmc boot\n"); - mode = BOOT_DEVICE_MMC1; - break; -#endif - case ZYNQ_BM_JTAG: - mode = BOOT_DEVICE_RAM; - break; - default: - puts("Unsupported boot mode selected\n"); - hang(); - } - - return mode; -} - -#ifdef CONFIG_SPL_MMC_SUPPORT -u32 spl_boot_mode(void) -{ - return MMCSD_MODE_FS; -} -#endif - -#ifdef CONFIG_SPL_OS_BOOT -int spl_start_uboot(void) -{ - /* boot linux */ - return 0; -} -#endif - -__weak void ps7_init(void) -{ - /* - * This function is overridden by the one in - * board/xilinx/zynq/ps7_init_gpl.c, if it exists. - */ -} diff --git a/arch/arm/cpu/armv7/zynq/timer.c b/arch/arm/cpu/armv7/zynq/timer.c deleted file mode 100644 index 5ed9642df9..0000000000 --- a/arch/arm/cpu/armv7/zynq/timer.c +++ /dev/null @@ -1,168 +0,0 @@ -/* - * Copyright (C) 2012 Michal Simek - * Copyright (C) 2011-2012 Xilinx, Inc. All rights reserved. - * - * (C) Copyright 2008 - * Guennadi Liakhovetki, DENX Software Engineering, - * - * (C) Copyright 2004 - * Philippe Robin, ARM Ltd. - * - * (C) Copyright 2002-2004 - * Gary Jennejohn, DENX Software Engineering, - * - * (C) Copyright 2003 - * Texas Instruments - * - * (C) Copyright 2002 - * Sysgo Real-Time Solutions, GmbH - * Marius Groeger - * - * (C) Copyright 2002 - * Sysgo Real-Time Solutions, GmbH - * Alex Zuepke - * - * SPDX-License-Identifier: GPL-2.0+ - */ - -#include -#include -#include -#include -#include - -DECLARE_GLOBAL_DATA_PTR; - -struct scu_timer { - u32 load; /* Timer Load Register */ - u32 counter; /* Timer Counter Register */ - u32 control; /* Timer Control Register */ -}; - -static struct scu_timer *timer_base = - (struct scu_timer *)ZYNQ_SCUTIMER_BASEADDR; - -#define SCUTIMER_CONTROL_PRESCALER_MASK 0x0000FF00 /* Prescaler */ -#define SCUTIMER_CONTROL_PRESCALER_SHIFT 8 -#define SCUTIMER_CONTROL_AUTO_RELOAD_MASK 0x00000002 /* Auto-reload */ -#define SCUTIMER_CONTROL_ENABLE_MASK 0x00000001 /* Timer enable */ - -#define TIMER_LOAD_VAL 0xFFFFFFFF -#define TIMER_PRESCALE 255 - -int timer_init(void) -{ - const u32 emask = SCUTIMER_CONTROL_AUTO_RELOAD_MASK | - (TIMER_PRESCALE << SCUTIMER_CONTROL_PRESCALER_SHIFT) | - SCUTIMER_CONTROL_ENABLE_MASK; - - gd->arch.timer_rate_hz = (gd->cpu_clk / 2) / (TIMER_PRESCALE + 1); - - /* Load the timer counter register */ - writel(0xFFFFFFFF, &timer_base->load); - - /* - * Start the A9Timer device - * Enable Auto reload mode, Clear prescaler control bits - * Set prescaler value, Enable the decrementer - */ - clrsetbits_le32(&timer_base->control, SCUTIMER_CONTROL_PRESCALER_MASK, - emask); - - /* Reset time */ - gd->arch.lastinc = readl(&timer_base->counter) / - (gd->arch.timer_rate_hz / CONFIG_SYS_HZ); - gd->arch.tbl = 0; - - return 0; -} - -/* - * This function is derived from PowerPC code (read timebase as long long). - * On ARM it just returns the timer value. - */ -ulong get_timer_masked(void) -{ - ulong now; - - now = readl(&timer_base->counter) / - (gd->arch.timer_rate_hz / CONFIG_SYS_HZ); - - if (gd->arch.lastinc >= now) { - /* Normal mode */ - gd->arch.tbl += gd->arch.lastinc - now; - } else { - /* We have an overflow ... */ - gd->arch.tbl += gd->arch.lastinc + (TIMER_LOAD_VAL / - (gd->arch.timer_rate_hz / CONFIG_SYS_HZ)) - - now + 1; - } - gd->arch.lastinc = now; - - return gd->arch.tbl; -} - -void __udelay(unsigned long usec) -{ - u32 countticks; - u32 timeend; - u32 timediff; - u32 timenow; - - if (usec == 0) - return; - - countticks = lldiv(((unsigned long long)gd->arch.timer_rate_hz * usec), - 1000000); - - /* decrementing timer */ - timeend = readl(&timer_base->counter) - countticks; - -#if TIMER_LOAD_VAL != 0xFFFFFFFF - /* do not manage multiple overflow */ - if (countticks >= TIMER_LOAD_VAL) - countticks = TIMER_LOAD_VAL - 1; -#endif - - do { - timenow = readl(&timer_base->counter); - - if (timenow >= timeend) { - /* normal case */ - timediff = timenow - timeend; - } else { - if ((TIMER_LOAD_VAL - timeend + timenow) <= - countticks) { - /* overflow */ - timediff = TIMER_LOAD_VAL - timeend + timenow; - } else { - /* missed the exact match */ - break; - } - } - } while (timediff > 0); -} - -/* Timer without interrupts */ -ulong get_timer(ulong base) -{ - return get_timer_masked() - base; -} - -/* - * This function is derived from PowerPC code (read timebase as long long). - * On ARM it just returns the timer value. - */ -unsigned long long get_ticks(void) -{ - return get_timer(0); -} - -/* - * This function is derived from PowerPC code (timebase clock frequency). - * On ARM it returns the number of timer ticks per second. - */ -ulong get_tbclk(void) -{ - return CONFIG_SYS_HZ; -} diff --git a/arch/arm/cpu/armv7/zynq/u-boot-spl.lds b/arch/arm/cpu/armv7/zynq/u-boot-spl.lds deleted file mode 100644 index 0f2f756f83..0000000000 --- a/arch/arm/cpu/armv7/zynq/u-boot-spl.lds +++ /dev/null @@ -1,62 +0,0 @@ -/* - * Copyright (c) 2014 Xilinx, Inc. Michal Simek - * Copyright (c) 2004-2008 Texas Instruments - * - * (C) Copyright 2002 - * Gary Jennejohn, DENX Software Engineering, - * - * SPDX-License-Identifier: GPL-2.0+ - */ - -MEMORY { .sram : ORIGIN = CONFIG_SPL_TEXT_BASE,\ - LENGTH = CONFIG_SPL_MAX_SIZE } -MEMORY { .sdram : ORIGIN = CONFIG_SPL_BSS_START_ADDR, \ - LENGTH = CONFIG_SPL_BSS_MAX_SIZE } - -OUTPUT_FORMAT("elf32-littlearm", "elf32-littlearm", "elf32-littlearm") -OUTPUT_ARCH(arm) -ENTRY(_start) -SECTIONS -{ - . = ALIGN(4); - .text : - { - __image_copy_start = .; - *(.vectors) - CPUDIR/start.o (.text*) - *(.text*) - } > .sram - - . = ALIGN(4); - .rodata : { - *(SORT_BY_ALIGNMENT(SORT_BY_NAME(.rodata*))) - } > .sram - - . = ALIGN(4); - .data : { - *(.data*) - } > .sram - - . = ALIGN(4); - - . = .; - - __image_copy_end = .; - - _end = .; - - /* Move BSS section to RAM because of FAT */ - .bss (NOLOAD) : { - __bss_start = .; - *(.bss*) - . = ALIGN(4); - __bss_end = .; - } > .sdram - - /DISCARD/ : { *(.dynsym) } - /DISCARD/ : { *(.dynstr*) } - /DISCARD/ : { *(.dynamic*) } - /DISCARD/ : { *(.plt*) } - /DISCARD/ : { *(.interp*) } - /DISCARD/ : { *(.gnu*) } -} diff --git a/arch/arm/cpu/armv7/zynq/u-boot.lds b/arch/arm/cpu/armv7/zynq/u-boot.lds deleted file mode 100644 index 4dc9bb0102..0000000000 --- a/arch/arm/cpu/armv7/zynq/u-boot.lds +++ /dev/null @@ -1,105 +0,0 @@ -/* - * Copyright (c) 2004-2008 Texas Instruments - * - * (C) Copyright 2002 - * Gary Jennejohn, DENX Software Engineering, - * - * SPDX-License-Identifier: GPL-2.0+ - */ - -OUTPUT_FORMAT("elf32-littlearm", "elf32-littlearm", "elf32-littlearm") -OUTPUT_ARCH(arm) -ENTRY(_start) -SECTIONS -{ - . = 0x00000000; - - . = ALIGN(4); - .text : - { - *(.__image_copy_start) - *(.vectors) - CPUDIR/start.o (.text*) - *(.text*) - } - - . = ALIGN(4); - .rodata : { *(SORT_BY_ALIGNMENT(SORT_BY_NAME(.rodata*))) } - - . = ALIGN(4); - .data : { - *(.data*) - } - - . = ALIGN(4); - - . = .; - - . = ALIGN(4); - .u_boot_list : { - KEEP(*(SORT(.u_boot_list*))); - } - - . = ALIGN(4); - - .image_copy_end : - { - *(.__image_copy_end) - } - - .rel_dyn_start : - { - *(.__rel_dyn_start) - } - - .rel.dyn : { - *(.rel*) - } - - .rel_dyn_end : - { - *(.__rel_dyn_end) - } - - .end : - { - *(.__end) - } - - _image_binary_end = .; - -/* - * Compiler-generated __bss_start and __bss_end, see arch/arm/lib/bss.c - * __bss_base and __bss_limit are for linker only (overlay ordering) - */ - - .bss_start __rel_dyn_start (OVERLAY) : { - KEEP(*(.__bss_start)); - __bss_base = .; - } - - .bss __bss_base (OVERLAY) : { - *(.bss*) - . = ALIGN(4); - __bss_limit = .; - } - - .bss_end __bss_limit (OVERLAY) : { - KEEP(*(.__bss_end)); - } - - /* - * Zynq needs to discard these sections because the user - * is expected to pass this image on to tools for boot.bin - * generation that require them to be dropped. - */ - /DISCARD/ : { *(.dynsym) } - /DISCARD/ : { *(.dynbss*) } - /DISCARD/ : { *(.dynstr*) } - /DISCARD/ : { *(.dynamic*) } - /DISCARD/ : { *(.plt*) } - /DISCARD/ : { *(.interp*) } - /DISCARD/ : { *(.gnu*) } - /DISCARD/ : { *(.ARM.exidx*) } - /DISCARD/ : { *(.gnu.linkonce.armexidx.*) } -} diff --git a/arch/arm/mach-zynq/Kconfig b/arch/arm/mach-zynq/Kconfig new file mode 100644 index 0000000000..26e570eb66 --- /dev/null +++ b/arch/arm/mach-zynq/Kconfig @@ -0,0 +1,43 @@ +if ZYNQ + +choice + prompt "Xilinx Zynq board select" + +config TARGET_ZYNQ_ZED + bool "Zynq ZedBoard" + +config TARGET_ZYNQ_MICROZED + bool "Zynq MicroZed" + +config TARGET_ZYNQ_PICOZED + bool "Zynq PicoZed" + +config TARGET_ZYNQ_ZC70X + bool "Zynq ZC702/ZC706 Board" + +config TARGET_ZYNQ_ZC770 + bool "Zynq ZC770 Board" + +config TARGET_ZYNQ_ZYBO + bool "Zynq Zybo Board" + +endchoice + +config SYS_BOARD + default "zynq" + +config SYS_VENDOR + default "xilinx" + +config SYS_SOC + default "zynq" + +config SYS_CONFIG_NAME + default "zynq_zed" if TARGET_ZYNQ_ZED + default "zynq_microzed" if TARGET_ZYNQ_MICROZED + default "zynq_picozed" if TARGET_ZYNQ_PICOZED + default "zynq_zc70x" if TARGET_ZYNQ_ZC70X + default "zynq_zc770" if TARGET_ZYNQ_ZC770 + default "zynq_zybo" if TARGET_ZYNQ_ZYBO + +endif diff --git a/arch/arm/mach-zynq/Makefile b/arch/arm/mach-zynq/Makefile new file mode 100644 index 0000000000..bf29b4d396 --- /dev/null +++ b/arch/arm/mach-zynq/Makefile @@ -0,0 +1,18 @@ +# +# (C) Copyright 2000-2003 +# Wolfgang Denk, DENX Software Engineering, wd@denx.de. +# +# (C) Copyright 2008 +# Guennadi Liakhovetki, DENX Software Engineering, +# +# SPDX-License-Identifier: GPL-2.0+ +# + +obj-y := timer.o +obj-y += cpu.o +obj-y += ddrc.o +obj-y += slcr.o +obj-y += clk.o +obj-y += lowlevel_init.o +AFLAGS_lowlevel_init.o := -mfpu=neon +obj-$(CONFIG_SPL_BUILD) += spl.o diff --git a/arch/arm/mach-zynq/clk.c b/arch/arm/mach-zynq/clk.c new file mode 100644 index 0000000000..d2885dc2b9 --- /dev/null +++ b/arch/arm/mach-zynq/clk.c @@ -0,0 +1,664 @@ +/* + * Copyright (C) 2013 Soren Brinkmann + * Copyright (C) 2013 Xilinx, Inc. All rights reserved. + * + * SPDX-License-Identifier: GPL-2.0+ + */ +#include +#include +#include +#include +#include +#include + +/* Board oscillator frequency */ +#ifndef CONFIG_ZYNQ_PS_CLK_FREQ +# define CONFIG_ZYNQ_PS_CLK_FREQ 33333333UL +#endif + +/* Register bitfield defines */ +#define PLLCTRL_FBDIV_MASK 0x7f000 +#define PLLCTRL_FBDIV_SHIFT 12 +#define PLLCTRL_BPFORCE_MASK (1 << 4) +#define PLLCTRL_PWRDWN_MASK 2 +#define PLLCTRL_PWRDWN_SHIFT 1 +#define PLLCTRL_RESET_MASK 1 +#define PLLCTRL_RESET_SHIFT 0 + +#define ZYNQ_CLK_MAXDIV 0x3f +#define CLK_CTRL_DIV1_SHIFT 20 +#define CLK_CTRL_DIV1_MASK (ZYNQ_CLK_MAXDIV << CLK_CTRL_DIV1_SHIFT) +#define CLK_CTRL_DIV0_SHIFT 8 +#define CLK_CTRL_DIV0_MASK (ZYNQ_CLK_MAXDIV << CLK_CTRL_DIV0_SHIFT) +#define CLK_CTRL_SRCSEL_SHIFT 4 +#define CLK_CTRL_SRCSEL_MASK (0x3 << CLK_CTRL_SRCSEL_SHIFT) + +#define CLK_CTRL_DIV2X_SHIFT 26 +#define CLK_CTRL_DIV2X_MASK (ZYNQ_CLK_MAXDIV << CLK_CTRL_DIV2X_SHIFT) +#define CLK_CTRL_DIV3X_SHIFT 20 +#define CLK_CTRL_DIV3X_MASK (ZYNQ_CLK_MAXDIV << CLK_CTRL_DIV3X_SHIFT) + +#define ZYNQ_CLKMUX_SEL_0 0 +#define ZYNQ_CLKMUX_SEL_1 1 +#define ZYNQ_CLKMUX_SEL_2 2 +#define ZYNQ_CLKMUX_SEL_3 3 + +DECLARE_GLOBAL_DATA_PTR; + +struct clk; + +/** + * struct clk_ops: + * @set_rate: Function pointer to set_rate() implementation + * @get_rate: Function pointer to get_rate() implementation + */ +struct clk_ops { + int (*set_rate)(struct clk *clk, unsigned long rate); + unsigned long (*get_rate)(struct clk *clk); +}; + +/** + * struct clk: + * @name: Clock name + * @frequency: Currenct frequency + * @parent: Parent clock + * @flags: Clock flags + * @reg: Clock control register + * @ops: Clock operations + */ +struct clk { + char *name; + unsigned long frequency; + enum zynq_clk parent; + unsigned int flags; + u32 *reg; + struct clk_ops ops; +}; +#define ZYNQ_CLK_FLAGS_HAS_2_DIVS 1 + +static struct clk clks[clk_max]; + +/** + * __zynq_clk_cpu_get_parent() - Decode clock multiplexer + * @srcsel: Mux select value + * Returns the clock identifier associated with the selected mux input. + */ +static int __zynq_clk_cpu_get_parent(unsigned int srcsel) +{ + unsigned int ret; + + switch (srcsel) { + case ZYNQ_CLKMUX_SEL_0: + case ZYNQ_CLKMUX_SEL_1: + ret = armpll_clk; + break; + case ZYNQ_CLKMUX_SEL_2: + ret = ddrpll_clk; + break; + case ZYNQ_CLKMUX_SEL_3: + ret = iopll_clk; + break; + default: + ret = armpll_clk; + break; + } + + return ret; +} + +/** + * ddr2x_get_rate() - Get clock rate of DDR2x clock + * @clk: Clock handle + * Returns the current clock rate of @clk. + */ +static unsigned long ddr2x_get_rate(struct clk *clk) +{ + u32 clk_ctrl = readl(clk->reg); + u32 div = (clk_ctrl & CLK_CTRL_DIV2X_MASK) >> CLK_CTRL_DIV2X_SHIFT; + + return DIV_ROUND_CLOSEST(zynq_clk_get_rate(clk->parent), div); +} + +/** + * ddr3x_get_rate() - Get clock rate of DDR3x clock + * @clk: Clock handle + * Returns the current clock rate of @clk. + */ +static unsigned long ddr3x_get_rate(struct clk *clk) +{ + u32 clk_ctrl = readl(clk->reg); + u32 div = (clk_ctrl & CLK_CTRL_DIV3X_MASK) >> CLK_CTRL_DIV3X_SHIFT; + + return DIV_ROUND_CLOSEST(zynq_clk_get_rate(clk->parent), div); +} + +static void init_ddr_clocks(void) +{ + u32 div0, div1; + unsigned long prate = zynq_clk_get_rate(ddrpll_clk); + u32 clk_ctrl = readl(&slcr_base->ddr_clk_ctrl); + + /* DDR2x */ + clks[ddr2x_clk].reg = &slcr_base->ddr_clk_ctrl; + clks[ddr2x_clk].parent = ddrpll_clk; + clks[ddr2x_clk].name = "ddr_2x"; + clks[ddr2x_clk].frequency = ddr2x_get_rate(&clks[ddr2x_clk]); + clks[ddr2x_clk].ops.get_rate = ddr2x_get_rate; + + /* DDR3x */ + clks[ddr3x_clk].reg = &slcr_base->ddr_clk_ctrl; + clks[ddr3x_clk].parent = ddrpll_clk; + clks[ddr3x_clk].name = "ddr_3x"; + clks[ddr3x_clk].frequency = ddr3x_get_rate(&clks[ddr3x_clk]); + clks[ddr3x_clk].ops.get_rate = ddr3x_get_rate; + + /* DCI */ + clk_ctrl = readl(&slcr_base->dci_clk_ctrl); + div0 = (clk_ctrl & CLK_CTRL_DIV0_MASK) >> CLK_CTRL_DIV0_SHIFT; + div1 = (clk_ctrl & CLK_CTRL_DIV1_MASK) >> CLK_CTRL_DIV1_SHIFT; + clks[dci_clk].reg = &slcr_base->dci_clk_ctrl; + clks[dci_clk].parent = ddrpll_clk; + clks[dci_clk].frequency = DIV_ROUND_CLOSEST( + DIV_ROUND_CLOSEST(prate, div0), div1); + clks[dci_clk].name = "dci"; + + gd->bd->bi_ddr_freq = clks[ddr3x_clk].frequency / 1000000; +} + +static void init_cpu_clocks(void) +{ + int clk_621; + u32 reg, div, srcsel; + enum zynq_clk parent; + + reg = readl(&slcr_base->arm_clk_ctrl); + clk_621 = readl(&slcr_base->clk_621_true) & 1; + div = (reg & CLK_CTRL_DIV0_MASK) >> CLK_CTRL_DIV0_SHIFT; + srcsel = (reg & CLK_CTRL_SRCSEL_MASK) >> CLK_CTRL_SRCSEL_SHIFT; + parent = __zynq_clk_cpu_get_parent(srcsel); + + /* cpu clocks */ + clks[cpu_6or4x_clk].reg = &slcr_base->arm_clk_ctrl; + clks[cpu_6or4x_clk].parent = parent; + clks[cpu_6or4x_clk].frequency = DIV_ROUND_CLOSEST( + zynq_clk_get_rate(parent), div); + clks[cpu_6or4x_clk].name = "cpu_6or4x"; + + clks[cpu_3or2x_clk].reg = &slcr_base->arm_clk_ctrl; + clks[cpu_3or2x_clk].parent = cpu_6or4x_clk; + clks[cpu_3or2x_clk].frequency = zynq_clk_get_rate(cpu_6or4x_clk) / 2; + clks[cpu_3or2x_clk].name = "cpu_3or2x"; + + clks[cpu_2x_clk].reg = &slcr_base->arm_clk_ctrl; + clks[cpu_2x_clk].parent = cpu_6or4x_clk; + clks[cpu_2x_clk].frequency = zynq_clk_get_rate(cpu_6or4x_clk) / + (2 + clk_621); + clks[cpu_2x_clk].name = "cpu_2x"; + + clks[cpu_1x_clk].reg = &slcr_base->arm_clk_ctrl; + clks[cpu_1x_clk].parent = cpu_6or4x_clk; + clks[cpu_1x_clk].frequency = zynq_clk_get_rate(cpu_6or4x_clk) / + (4 + 2 * clk_621); + clks[cpu_1x_clk].name = "cpu_1x"; +} + +/** + * periph_calc_two_divs() - Calculate clock dividers + * @cur_rate: Current clock rate + * @tgt_rate: Target clock rate + * @prate: Parent clock rate + * @div0: First divider (output) + * @div1: Second divider (output) + * Returns the actual clock rate possible. + * + * Calculates clock dividers for clocks with two 6-bit dividers. + */ +static unsigned long periph_calc_two_divs(unsigned long cur_rate, + unsigned long tgt_rate, unsigned long prate, u32 *div0, + u32 *div1) +{ + long err, best_err = (long)(~0UL >> 1); + unsigned long rate, best_rate = 0; + u32 d0, d1; + + for (d0 = 1; d0 <= ZYNQ_CLK_MAXDIV; d0++) { + for (d1 = 1; d1 <= ZYNQ_CLK_MAXDIV >> 1; d1++) { + rate = DIV_ROUND_CLOSEST(DIV_ROUND_CLOSEST(prate, d0), + d1); + err = abs(rate - tgt_rate); + + if (err < best_err) { + *div0 = d0; + *div1 = d1; + best_err = err; + best_rate = rate; + } + } + } + + return best_rate; +} + +/** + * zynq_clk_periph_set_rate() - Set clock rate + * @clk: Handle of the peripheral clock + * @rate: New clock rate + * Sets the clock frequency of @clk to @rate. Returns zero on success. + */ +static int zynq_clk_periph_set_rate(struct clk *clk, + unsigned long rate) +{ + u32 ctrl, div0 = 0, div1 = 0; + unsigned long prate, new_rate, cur_rate = clk->frequency; + + ctrl = readl(clk->reg); + prate = zynq_clk_get_rate(clk->parent); + ctrl &= ~CLK_CTRL_DIV0_MASK; + + if (clk->flags & ZYNQ_CLK_FLAGS_HAS_2_DIVS) { + ctrl &= ~CLK_CTRL_DIV1_MASK; + new_rate = periph_calc_two_divs(cur_rate, rate, prate, &div0, + &div1); + ctrl |= div1 << CLK_CTRL_DIV1_SHIFT; + } else { + div0 = DIV_ROUND_CLOSEST(prate, rate); + div0 &= ZYNQ_CLK_MAXDIV; + new_rate = DIV_ROUND_CLOSEST(rate, div0); + } + + /* write new divs to hardware */ + ctrl |= div0 << CLK_CTRL_DIV0_SHIFT; + writel(ctrl, clk->reg); + + /* update frequency in clk framework */ + clk->frequency = new_rate; + + return 0; +} + +/** + * zynq_clk_periph_get_rate() - Get clock rate + * @clk: Handle of the peripheral clock + * Returns the current clock rate of @clk. + */ +static unsigned long zynq_clk_periph_get_rate(struct clk *clk) +{ + u32 clk_ctrl = readl(clk->reg); + u32 div0 = (clk_ctrl & CLK_CTRL_DIV0_MASK) >> CLK_CTRL_DIV0_SHIFT; + u32 div1 = 1; + + if (clk->flags & ZYNQ_CLK_FLAGS_HAS_2_DIVS) + div1 = (clk_ctrl & CLK_CTRL_DIV1_MASK) >> CLK_CTRL_DIV1_SHIFT; + + /* a register value of zero == division by 1 */ + if (!div0) + div0 = 1; + if (!div1) + div1 = 1; + + return + DIV_ROUND_CLOSEST( + DIV_ROUND_CLOSEST(zynq_clk_get_rate(clk->parent), div0), + div1); +} + +/** + * __zynq_clk_periph_get_parent() - Decode clock multiplexer + * @srcsel: Mux select value + * Returns the clock identifier associated with the selected mux input. + */ +static enum zynq_clk __zynq_clk_periph_get_parent(u32 srcsel) +{ + switch (srcsel) { + case ZYNQ_CLKMUX_SEL_0: + case ZYNQ_CLKMUX_SEL_1: + return iopll_clk; + case ZYNQ_CLKMUX_SEL_2: + return armpll_clk; + case ZYNQ_CLKMUX_SEL_3: + return ddrpll_clk; + default: + return 0; + } +} + +/** + * zynq_clk_periph_get_parent() - Decode clock multiplexer + * @clk: Clock handle + * Returns the clock identifier associated with the selected mux input. + */ +static enum zynq_clk zynq_clk_periph_get_parent(struct clk *clk) +{ + u32 clk_ctrl = readl(clk->reg); + u32 srcsel = (clk_ctrl & CLK_CTRL_SRCSEL_MASK) >> CLK_CTRL_SRCSEL_SHIFT; + + return __zynq_clk_periph_get_parent(srcsel); +} + +/** + * zynq_clk_register_periph_clk() - Set up a peripheral clock with the framework + * @clk: Pointer to struct clk for the clock + * @ctrl: Clock control register + * @name: PLL name + * @two_divs: Indicates whether the clock features one or two dividers + */ +static int zynq_clk_register_periph_clk(struct clk *clk, u32 *ctrl, char *name, + bool two_divs) +{ + clk->name = name; + clk->reg = ctrl; + if (two_divs) + clk->flags = ZYNQ_CLK_FLAGS_HAS_2_DIVS; + clk->parent = zynq_clk_periph_get_parent(clk); + clk->frequency = zynq_clk_periph_get_rate(clk); + clk->ops.get_rate = zynq_clk_periph_get_rate; + clk->ops.set_rate = zynq_clk_periph_set_rate; + + return 0; +} + +static void init_periph_clocks(void) +{ + zynq_clk_register_periph_clk(&clks[gem0_clk], &slcr_base->gem0_clk_ctrl, + "gem0", 1); + zynq_clk_register_periph_clk(&clks[gem1_clk], &slcr_base->gem1_clk_ctrl, + "gem1", 1); + + zynq_clk_register_periph_clk(&clks[smc_clk], &slcr_base->smc_clk_ctrl, + "smc", 0); + + zynq_clk_register_periph_clk(&clks[lqspi_clk], + &slcr_base->lqspi_clk_ctrl, "lqspi", 0); + + zynq_clk_register_periph_clk(&clks[sdio0_clk], + &slcr_base->sdio_clk_ctrl, "sdio0", 0); + zynq_clk_register_periph_clk(&clks[sdio1_clk], + &slcr_base->sdio_clk_ctrl, "sdio1", 0); + + zynq_clk_register_periph_clk(&clks[spi0_clk], &slcr_base->spi_clk_ctrl, + "spi0", 0); + zynq_clk_register_periph_clk(&clks[spi1_clk], &slcr_base->spi_clk_ctrl, + "spi1", 0); + + zynq_clk_register_periph_clk(&clks[uart0_clk], + &slcr_base->uart_clk_ctrl, "uart0", 0); + zynq_clk_register_periph_clk(&clks[uart1_clk], + &slcr_base->uart_clk_ctrl, "uart1", 0); + + zynq_clk_register_periph_clk(&clks[dbg_trc_clk], + &slcr_base->dbg_clk_ctrl, "dbg_trc", 0); + zynq_clk_register_periph_clk(&clks[dbg_apb_clk], + &slcr_base->dbg_clk_ctrl, "dbg_apb", 0); + + zynq_clk_register_periph_clk(&clks[pcap_clk], + &slcr_base->pcap_clk_ctrl, "pcap", 0); + + zynq_clk_register_periph_clk(&clks[fclk0_clk], + &slcr_base->fpga0_clk_ctrl, "fclk0", 1); + zynq_clk_register_periph_clk(&clks[fclk1_clk], + &slcr_base->fpga1_clk_ctrl, "fclk1", 1); + zynq_clk_register_periph_clk(&clks[fclk2_clk], + &slcr_base->fpga2_clk_ctrl, "fclk2", 1); + zynq_clk_register_periph_clk(&clks[fclk3_clk], + &slcr_base->fpga3_clk_ctrl, "fclk3", 1); +} + +/** + * zynq_clk_register_aper_clk() - Set up a APER clock with the framework + * @clk: Pointer to struct clk for the clock + * @ctrl: Clock control register + * @name: PLL name + */ +static void zynq_clk_register_aper_clk(struct clk *clk, u32 *ctrl, char *name) +{ + clk->name = name; + clk->reg = ctrl; + clk->parent = cpu_1x_clk; + clk->frequency = zynq_clk_get_rate(clk->parent); +} + +static void init_aper_clocks(void) +{ + zynq_clk_register_aper_clk(&clks[usb0_aper_clk], + &slcr_base->aper_clk_ctrl, "usb0_aper"); + zynq_clk_register_aper_clk(&clks[usb1_aper_clk], + &slcr_base->aper_clk_ctrl, "usb1_aper"); + + zynq_clk_register_aper_clk(&clks[gem0_aper_clk], + &slcr_base->aper_clk_ctrl, "gem0_aper"); + zynq_clk_register_aper_clk(&clks[gem1_aper_clk], + &slcr_base->aper_clk_ctrl, "gem1_aper"); + + zynq_clk_register_aper_clk(&clks[sdio0_aper_clk], + &slcr_base->aper_clk_ctrl, "sdio0_aper"); + zynq_clk_register_aper_clk(&clks[sdio1_aper_clk], + &slcr_base->aper_clk_ctrl, "sdio1_aper"); + + zynq_clk_register_aper_clk(&clks[spi0_aper_clk], + &slcr_base->aper_clk_ctrl, "spi0_aper"); + zynq_clk_register_aper_clk(&clks[spi1_aper_clk], + &slcr_base->aper_clk_ctrl, "spi1_aper"); + + zynq_clk_register_aper_clk(&clks[can0_aper_clk], + &slcr_base->aper_clk_ctrl, "can0_aper"); + zynq_clk_register_aper_clk(&clks[can1_aper_clk], + &slcr_base->aper_clk_ctrl, "can1_aper"); + + zynq_clk_register_aper_clk(&clks[i2c0_aper_clk], + &slcr_base->aper_clk_ctrl, "i2c0_aper"); + zynq_clk_register_aper_clk(&clks[i2c1_aper_clk], + &slcr_base->aper_clk_ctrl, "i2c1_aper"); + + zynq_clk_register_aper_clk(&clks[uart0_aper_clk], + &slcr_base->aper_clk_ctrl, "uart0_aper"); + zynq_clk_register_aper_clk(&clks[uart1_aper_clk], + &slcr_base->aper_clk_ctrl, "uart1_aper"); + + zynq_clk_register_aper_clk(&clks[gpio_aper_clk], + &slcr_base->aper_clk_ctrl, "gpio_aper"); + + zynq_clk_register_aper_clk(&clks[lqspi_aper_clk], + &slcr_base->aper_clk_ctrl, "lqspi_aper"); + + zynq_clk_register_aper_clk(&clks[smc_aper_clk], + &slcr_base->aper_clk_ctrl, "smc_aper"); +} + +/** + * __zynq_clk_pll_get_rate() - Get PLL rate + * @addr: Address of the PLL's control register + * Returns the current PLL output rate. + */ +static unsigned long __zynq_clk_pll_get_rate(u32 *addr) +{ + u32 reg, mul, bypass; + + reg = readl(addr); + bypass = reg & PLLCTRL_BPFORCE_MASK; + if (bypass) + mul = 1; + else + mul = (reg & PLLCTRL_FBDIV_MASK) >> PLLCTRL_FBDIV_SHIFT; + + return CONFIG_ZYNQ_PS_CLK_FREQ * mul; +} + +/** + * zynq_clk_pll_get_rate() - Get PLL rate + * @pll: Handle of the PLL + * Returns the current clock rate of @pll. + */ +static unsigned long zynq_clk_pll_get_rate(struct clk *pll) +{ + return __zynq_clk_pll_get_rate(pll->reg); +} + +/** + * zynq_clk_register_pll() - Set up a PLL with the framework + * @clk: Pointer to struct clk for the PLL + * @ctrl: PLL control register + * @name: PLL name + * @prate: PLL input clock rate + */ +static void zynq_clk_register_pll(struct clk *clk, u32 *ctrl, char *name, + unsigned long prate) +{ + clk->name = name; + clk->reg = ctrl; + clk->frequency = zynq_clk_pll_get_rate(clk); + clk->ops.get_rate = zynq_clk_pll_get_rate; +} + +/** + * clkid_2_register() - Get clock control register + * @id: Clock identifier of one of the PLLs + * Returns the address of the requested PLL's control register. + */ +static u32 *clkid_2_register(enum zynq_clk id) +{ + switch (id) { + case armpll_clk: + return &slcr_base->arm_pll_ctrl; + case ddrpll_clk: + return &slcr_base->ddr_pll_ctrl; + case iopll_clk: + return &slcr_base->io_pll_ctrl; + default: + return &slcr_base->io_pll_ctrl; + } +} + +/* API */ +/** + * zynq_clk_early_init() - Early init for the clock framework + * + * This function is called from before relocation and sets up the CPU clock + * frequency in the global data struct. + */ +void zynq_clk_early_init(void) +{ + u32 reg = readl(&slcr_base->arm_clk_ctrl); + u32 div = (reg & CLK_CTRL_DIV0_MASK) >> CLK_CTRL_DIV0_SHIFT; + u32 srcsel = (reg & CLK_CTRL_SRCSEL_MASK) >> CLK_CTRL_SRCSEL_SHIFT; + enum zynq_clk parent = __zynq_clk_cpu_get_parent(srcsel); + u32 *pllreg = clkid_2_register(parent); + unsigned long prate = __zynq_clk_pll_get_rate(pllreg); + + if (!div) + div = 1; + + gd->cpu_clk = DIV_ROUND_CLOSEST(prate, div); +} + +/** + * get_uart_clk() - Get UART input frequency + * @dev_index: UART ID + * Returns UART input clock frequency in Hz. + * + * Compared to zynq_clk_get_rate() this function is designed to work before + * relocation and can be called when the serial UART is set up. + */ +unsigned long get_uart_clk(int dev_index) +{ + u32 reg = readl(&slcr_base->uart_clk_ctrl); + u32 div = (reg & CLK_CTRL_DIV0_MASK) >> CLK_CTRL_DIV0_SHIFT; + u32 srcsel = (reg & CLK_CTRL_SRCSEL_MASK) >> CLK_CTRL_SRCSEL_SHIFT; + enum zynq_clk parent = __zynq_clk_periph_get_parent(srcsel); + u32 *pllreg = clkid_2_register(parent); + unsigned long prate = __zynq_clk_pll_get_rate(pllreg); + + if (!div) + div = 1; + + return DIV_ROUND_CLOSEST(prate, div); +} + +/** + * set_cpu_clk_info() - Initialize clock framework + * Always returns zero. + * + * This function is called from common code after relocation and sets up the + * clock framework. The framework must not be used before this function had been + * called. + */ +int set_cpu_clk_info(void) +{ + zynq_clk_register_pll(&clks[armpll_clk], &slcr_base->arm_pll_ctrl, + "armpll", CONFIG_ZYNQ_PS_CLK_FREQ); + zynq_clk_register_pll(&clks[ddrpll_clk], &slcr_base->ddr_pll_ctrl, + "ddrpll", CONFIG_ZYNQ_PS_CLK_FREQ); + zynq_clk_register_pll(&clks[iopll_clk], &slcr_base->io_pll_ctrl, + "iopll", CONFIG_ZYNQ_PS_CLK_FREQ); + + init_ddr_clocks(); + init_cpu_clocks(); + init_periph_clocks(); + init_aper_clocks(); + + gd->bd->bi_arm_freq = gd->cpu_clk / 1000000; + gd->bd->bi_dsp_freq = 0; + + return 0; +} + +/** + * zynq_clk_get_rate() - Get clock rate + * @clk: Clock identifier + * Returns the current clock rate of @clk on success or zero for an invalid + * clock id. + */ +unsigned long zynq_clk_get_rate(enum zynq_clk clk) +{ + if (clk < 0 || clk >= clk_max) + return 0; + + return clks[clk].frequency; +} + +/** + * zynq_clk_set_rate() - Set clock rate + * @clk: Clock identifier + * @rate: Requested clock rate + * Passes on the return value from the clock's set_rate() function or negative + * errno. + */ +int zynq_clk_set_rate(enum zynq_clk clk, unsigned long rate) +{ + if (clk < 0 || clk >= clk_max) + return -ENODEV; + + if (clks[clk].ops.set_rate) + return clks[clk].ops.set_rate(&clks[clk], rate); + + return -ENXIO; +} + +/** + * zynq_clk_get_name() - Get clock name + * @clk: Clock identifier + * Returns the name of @clk. + */ +const char *zynq_clk_get_name(enum zynq_clk clk) +{ + return clks[clk].name; +} + +/** + * soc_clk_dump() - Print clock frequencies + * Returns zero on success + * + * Implementation for the clk dump command. + */ +int soc_clk_dump(void) +{ + int i; + + printf("clk\t\tfrequency\n"); + for (i = 0; i < clk_max; i++) { + const char *name = zynq_clk_get_name(i); + if (name) + printf("%10s%20lu\n", name, zynq_clk_get_rate(i)); + } + + return 0; +} diff --git a/arch/arm/mach-zynq/cpu.c b/arch/arm/mach-zynq/cpu.c new file mode 100644 index 0000000000..914b1feb68 --- /dev/null +++ b/arch/arm/mach-zynq/cpu.c @@ -0,0 +1,67 @@ +/* + * Copyright (C) 2012 Michal Simek + * Copyright (C) 2012 Xilinx, Inc. All rights reserved. + * + * SPDX-License-Identifier: GPL-2.0+ + */ +#include +#include +#include +#include +#include + +#define ZYNQ_SILICON_VER_MASK 0xF0000000 +#define ZYNQ_SILICON_VER_SHIFT 28 + +int arch_cpu_init(void) +{ + zynq_slcr_unlock(); +#ifndef CONFIG_SPL_BUILD + /* Device config APB, unlock the PCAP */ + writel(0x757BDF0D, &devcfg_base->unlock); + writel(0xFFFFFFFF, &devcfg_base->rom_shadow); + +#if (CONFIG_SYS_SDRAM_BASE == 0) + /* remap DDR to zero, FILTERSTART */ + writel(0, &scu_base->filter_start); + + /* OCM_CFG, Mask out the ROM, map ram into upper addresses */ + writel(0x1F, &slcr_base->ocm_cfg); + /* FPGA_RST_CTRL, clear resets on AXI fabric ports */ + writel(0x0, &slcr_base->fpga_rst_ctrl); + /* Set urgent bits with register */ + writel(0x0, &slcr_base->ddr_urgent_sel); + /* Urgent write, ports S2/S3 */ + writel(0xC, &slcr_base->ddr_urgent); +#endif +#endif + zynq_clk_early_init(); + zynq_slcr_lock(); + + return 0; +} + +unsigned int zynq_get_silicon_version(void) +{ + unsigned int ver; + + ver = (readl(&devcfg_base->mctrl) & + ZYNQ_SILICON_VER_MASK) >> ZYNQ_SILICON_VER_SHIFT; + + return ver; +} + +void reset_cpu(ulong addr) +{ + zynq_slcr_cpu_reset(); + while (1) + ; +} + +#ifndef CONFIG_SYS_DCACHE_OFF +void enable_caches(void) +{ + /* Enable D-cache. I-cache is already enabled in start.S */ + dcache_enable(); +} +#endif diff --git a/arch/arm/mach-zynq/ddrc.c b/arch/arm/mach-zynq/ddrc.c new file mode 100644 index 0000000000..5b20accbcb --- /dev/null +++ b/arch/arm/mach-zynq/ddrc.c @@ -0,0 +1,50 @@ +/* + * Copyright (C) 2012 - 2013 Michal Simek + * Copyright (C) 2012 - 2013 Xilinx, Inc. All rights reserved. + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include +#include +#include +#include + +DECLARE_GLOBAL_DATA_PTR; + +/* Control regsiter bitfield definitions */ +#define ZYNQ_DDRC_CTRLREG_BUSWIDTH_MASK 0xC +#define ZYNQ_DDRC_CTRLREG_BUSWIDTH_SHIFT 2 +#define ZYNQ_DDRC_CTRLREG_BUSWIDTH_16BIT 1 + +/* ECC scrub regsiter definitions */ +#define ZYNQ_DDRC_ECC_SCRUBREG_ECC_MODE_MASK 0x7 +#define ZYNQ_DDRC_ECC_SCRUBREG_ECCMODE_SECDED 0x4 + +void zynq_ddrc_init(void) +{ + u32 width, ecctype; + + width = readl(&ddrc_base->ddrc_ctrl); + width = (width & ZYNQ_DDRC_CTRLREG_BUSWIDTH_MASK) >> + ZYNQ_DDRC_CTRLREG_BUSWIDTH_SHIFT; + ecctype = (readl(&ddrc_base->ecc_scrub) & + ZYNQ_DDRC_ECC_SCRUBREG_ECC_MODE_MASK); + + /* ECC is enabled when memory is in 16bit mode and it is enabled */ + if ((ecctype == ZYNQ_DDRC_ECC_SCRUBREG_ECCMODE_SECDED) && + (width == ZYNQ_DDRC_CTRLREG_BUSWIDTH_16BIT)) { + puts("ECC enabled "); + /* + * Clear the first 1MB because it is not initialized from + * first stage bootloader. To get ECC to work all memory has + * been initialized by writing any value. + */ + /* cppcheck-suppress nullPointer */ + memset((void *)0, 0, 1 * 1024 * 1024); + + gd->ram_size /= 2; + } else { + puts("ECC disabled "); + } +} diff --git a/arch/arm/mach-zynq/lowlevel_init.S b/arch/arm/mach-zynq/lowlevel_init.S new file mode 100644 index 0000000000..6d714b711c --- /dev/null +++ b/arch/arm/mach-zynq/lowlevel_init.S @@ -0,0 +1,26 @@ +/* + * Copyright (C) 2013 Xilinx, Inc. All rights reserved. + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include +#include +#include + +ENTRY(lowlevel_init) + + /* Enable the the VFP */ + mrc p15, 0, r1, c1, c0, 2 + orr r1, r1, #(0x3 << 20) + orr r1, r1, #(0x3 << 20) + mcr p15, 0, r1, c1, c0, 2 + isb + fmrx r1, FPEXC + orr r1,r1, #(1<<30) + fmxr FPEXC, r1 + + /* Move back to caller */ + mov pc, lr + +ENDPROC(lowlevel_init) diff --git a/arch/arm/mach-zynq/slcr.c b/arch/arm/mach-zynq/slcr.c new file mode 100644 index 0000000000..05f4099aae --- /dev/null +++ b/arch/arm/mach-zynq/slcr.c @@ -0,0 +1,203 @@ +/* + * Copyright (c) 2013 Xilinx Inc. + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include +#include +#include +#include +#include +#include + +#define SLCR_LOCK_MAGIC 0x767B +#define SLCR_UNLOCK_MAGIC 0xDF0D + +#define SLCR_USB_L1_SEL 0x04 + +#define SLCR_IDCODE_MASK 0x1F000 +#define SLCR_IDCODE_SHIFT 12 + +/* + * zynq_slcr_mio_get_status - Get the status of MIO peripheral. + * + * @peri_name: Name of the peripheral for checking MIO status + * @get_pins: Pointer to array of get pin for this peripheral + * @num_pins: Number of pins for this peripheral + * @mask: Mask value + * @check_val: Required check value to get the status of periph + */ +struct zynq_slcr_mio_get_status { + const char *peri_name; + const int *get_pins; + int num_pins; + u32 mask; + u32 check_val; +}; + +static const int usb0_pins[] = { + 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39 +}; + +static const int usb1_pins[] = { + 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51 +}; + +static const struct zynq_slcr_mio_get_status mio_periphs[] = { + { + "usb0", + usb0_pins, + ARRAY_SIZE(usb0_pins), + SLCR_USB_L1_SEL, + SLCR_USB_L1_SEL, + }, + { + "usb1", + usb1_pins, + ARRAY_SIZE(usb1_pins), + SLCR_USB_L1_SEL, + SLCR_USB_L1_SEL, + }, +}; + +static int slcr_lock = 1; /* 1 means locked, 0 means unlocked */ + +void zynq_slcr_lock(void) +{ + if (!slcr_lock) { + writel(SLCR_LOCK_MAGIC, &slcr_base->slcr_lock); + slcr_lock = 1; + } +} + +void zynq_slcr_unlock(void) +{ + if (slcr_lock) { + writel(SLCR_UNLOCK_MAGIC, &slcr_base->slcr_unlock); + slcr_lock = 0; + } +} + +/* Reset the entire system */ +void zynq_slcr_cpu_reset(void) +{ + /* + * Unlock the SLCR then reset the system. + * Note that this seems to require raw i/o + * functions or there's a lockup? + */ + zynq_slcr_unlock(); + + /* + * Clear 0x0F000000 bits of reboot status register to workaround + * the FSBL not loading the bitstream after soft-reboot + * This is a temporary solution until we know more. + */ + clrbits_le32(&slcr_base->reboot_status, 0xF000000); + + writel(1, &slcr_base->pss_rst_ctrl); +} + +/* Setup clk for network */ +void zynq_slcr_gem_clk_setup(u32 gem_id, unsigned long clk_rate) +{ + int ret; + + zynq_slcr_unlock(); + + if (gem_id > 1) { + printf("Non existing GEM id %d\n", gem_id); + goto out; + } + + ret = zynq_clk_set_rate(gem0_clk + gem_id, clk_rate); + if (ret) + goto out; + + if (gem_id) { + /* Configure GEM_RCLK_CTRL */ + writel(1, &slcr_base->gem1_rclk_ctrl); + } else { + /* Configure GEM_RCLK_CTRL */ + writel(1, &slcr_base->gem0_rclk_ctrl); + } + udelay(100000); +out: + zynq_slcr_lock(); +} + +void zynq_slcr_devcfg_disable(void) +{ + u32 reg_val; + + zynq_slcr_unlock(); + + /* Disable AXI interface by asserting FPGA resets */ + writel(0xF, &slcr_base->fpga_rst_ctrl); + + /* Disable Level shifters before setting PS-PL */ + reg_val = readl(&slcr_base->lvl_shftr_en); + reg_val &= ~0xF; + writel(reg_val, &slcr_base->lvl_shftr_en); + + /* Set Level Shifters DT618760 */ + writel(0xA, &slcr_base->lvl_shftr_en); + + zynq_slcr_lock(); +} + +void zynq_slcr_devcfg_enable(void) +{ + zynq_slcr_unlock(); + + /* Set Level Shifters DT618760 */ + writel(0xF, &slcr_base->lvl_shftr_en); + + /* Enable AXI interface by de-asserting FPGA resets */ + writel(0x0, &slcr_base->fpga_rst_ctrl); + + zynq_slcr_lock(); +} + +u32 zynq_slcr_get_boot_mode(void) +{ + /* Get the bootmode register value */ + return readl(&slcr_base->boot_mode); +} + +u32 zynq_slcr_get_idcode(void) +{ + return (readl(&slcr_base->pss_idcode) & SLCR_IDCODE_MASK) >> + SLCR_IDCODE_SHIFT; +} + +/* + * zynq_slcr_get_mio_pin_status - Get the MIO pin status of peripheral. + * + * @periph: Name of the peripheral + * + * Returns count to indicate the number of pins configured for the + * given @periph. + */ +int zynq_slcr_get_mio_pin_status(const char *periph) +{ + const struct zynq_slcr_mio_get_status *mio_ptr; + int val, i, j; + int mio = 0; + + for (i = 0; i < ARRAY_SIZE(mio_periphs); i++) { + if (strcmp(periph, mio_periphs[i].peri_name) == 0) { + mio_ptr = &mio_periphs[i]; + for (j = 0; j < mio_ptr->num_pins; j++) { + val = readl(&slcr_base->mio_pin + [mio_ptr->get_pins[j]]); + if ((val & mio_ptr->mask) == mio_ptr->check_val) + mio++; + } + break; + } + } + + return mio; +} diff --git a/arch/arm/mach-zynq/spl.c b/arch/arm/mach-zynq/spl.c new file mode 100644 index 0000000000..13025f034b --- /dev/null +++ b/arch/arm/mach-zynq/spl.c @@ -0,0 +1,90 @@ +/* + * (C) Copyright 2014 Xilinx, Inc. Michal Simek + * + * SPDX-License-Identifier: GPL-2.0+ + */ +#include +#include + +#include +#include +#include +#include + +DECLARE_GLOBAL_DATA_PTR; + +void board_init_f(ulong dummy) +{ + ps7_init(); + + /* Clear the BSS. */ + memset(__bss_start, 0, __bss_end - __bss_start); + + preloader_console_init(); + arch_cpu_init(); + board_init_r(NULL, 0); +} + +#ifdef CONFIG_SPL_BOARD_INIT +void spl_board_init(void) +{ + board_init(); +} +#endif + +u32 spl_boot_device(void) +{ + u32 mode; + + switch ((zynq_slcr_get_boot_mode()) & ZYNQ_BM_MASK) { +#ifdef CONFIG_SPL_SPI_SUPPORT + case ZYNQ_BM_QSPI: + puts("qspi boot\n"); + mode = BOOT_DEVICE_SPI; + break; +#endif + case ZYNQ_BM_NAND: + mode = BOOT_DEVICE_NAND; + break; + case ZYNQ_BM_NOR: + mode = BOOT_DEVICE_NOR; + break; +#ifdef CONFIG_SPL_MMC_SUPPORT + case ZYNQ_BM_SD: + puts("mmc boot\n"); + mode = BOOT_DEVICE_MMC1; + break; +#endif + case ZYNQ_BM_JTAG: + mode = BOOT_DEVICE_RAM; + break; + default: + puts("Unsupported boot mode selected\n"); + hang(); + } + + return mode; +} + +#ifdef CONFIG_SPL_MMC_SUPPORT +u32 spl_boot_mode(void) +{ + return MMCSD_MODE_FS; +} +#endif + +#ifdef CONFIG_SPL_OS_BOOT +int spl_start_uboot(void) +{ + /* boot linux */ + return 0; +} +#endif + +__weak void ps7_init(void) +{ + /* + * This function is overridden by the one in + * board/xilinx/zynq/ps7_init_gpl.c, if it exists. + */ +} diff --git a/arch/arm/mach-zynq/timer.c b/arch/arm/mach-zynq/timer.c new file mode 100644 index 0000000000..5ed9642df9 --- /dev/null +++ b/arch/arm/mach-zynq/timer.c @@ -0,0 +1,168 @@ +/* + * Copyright (C) 2012 Michal Simek + * Copyright (C) 2011-2012 Xilinx, Inc. All rights reserved. + * + * (C) Copyright 2008 + * Guennadi Liakhovetki, DENX Software Engineering, + * + * (C) Copyright 2004 + * Philippe Robin, ARM Ltd. + * + * (C) Copyright 2002-2004 + * Gary Jennejohn, DENX Software Engineering, + * + * (C) Copyright 2003 + * Texas Instruments + * + * (C) Copyright 2002 + * Sysgo Real-Time Solutions, GmbH + * Marius Groeger + * + * (C) Copyright 2002 + * Sysgo Real-Time Solutions, GmbH + * Alex Zuepke + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include +#include +#include +#include +#include + +DECLARE_GLOBAL_DATA_PTR; + +struct scu_timer { + u32 load; /* Timer Load Register */ + u32 counter; /* Timer Counter Register */ + u32 control; /* Timer Control Register */ +}; + +static struct scu_timer *timer_base = + (struct scu_timer *)ZYNQ_SCUTIMER_BASEADDR; + +#define SCUTIMER_CONTROL_PRESCALER_MASK 0x0000FF00 /* Prescaler */ +#define SCUTIMER_CONTROL_PRESCALER_SHIFT 8 +#define SCUTIMER_CONTROL_AUTO_RELOAD_MASK 0x00000002 /* Auto-reload */ +#define SCUTIMER_CONTROL_ENABLE_MASK 0x00000001 /* Timer enable */ + +#define TIMER_LOAD_VAL 0xFFFFFFFF +#define TIMER_PRESCALE 255 + +int timer_init(void) +{ + const u32 emask = SCUTIMER_CONTROL_AUTO_RELOAD_MASK | + (TIMER_PRESCALE << SCUTIMER_CONTROL_PRESCALER_SHIFT) | + SCUTIMER_CONTROL_ENABLE_MASK; + + gd->arch.timer_rate_hz = (gd->cpu_clk / 2) / (TIMER_PRESCALE + 1); + + /* Load the timer counter register */ + writel(0xFFFFFFFF, &timer_base->load); + + /* + * Start the A9Timer device + * Enable Auto reload mode, Clear prescaler control bits + * Set prescaler value, Enable the decrementer + */ + clrsetbits_le32(&timer_base->control, SCUTIMER_CONTROL_PRESCALER_MASK, + emask); + + /* Reset time */ + gd->arch.lastinc = readl(&timer_base->counter) / + (gd->arch.timer_rate_hz / CONFIG_SYS_HZ); + gd->arch.tbl = 0; + + return 0; +} + +/* + * This function is derived from PowerPC code (read timebase as long long). + * On ARM it just returns the timer value. + */ +ulong get_timer_masked(void) +{ + ulong now; + + now = readl(&timer_base->counter) / + (gd->arch.timer_rate_hz / CONFIG_SYS_HZ); + + if (gd->arch.lastinc >= now) { + /* Normal mode */ + gd->arch.tbl += gd->arch.lastinc - now; + } else { + /* We have an overflow ... */ + gd->arch.tbl += gd->arch.lastinc + (TIMER_LOAD_VAL / + (gd->arch.timer_rate_hz / CONFIG_SYS_HZ)) - + now + 1; + } + gd->arch.lastinc = now; + + return gd->arch.tbl; +} + +void __udelay(unsigned long usec) +{ + u32 countticks; + u32 timeend; + u32 timediff; + u32 timenow; + + if (usec == 0) + return; + + countticks = lldiv(((unsigned long long)gd->arch.timer_rate_hz * usec), + 1000000); + + /* decrementing timer */ + timeend = readl(&timer_base->counter) - countticks; + +#if TIMER_LOAD_VAL != 0xFFFFFFFF + /* do not manage multiple overflow */ + if (countticks >= TIMER_LOAD_VAL) + countticks = TIMER_LOAD_VAL - 1; +#endif + + do { + timenow = readl(&timer_base->counter); + + if (timenow >= timeend) { + /* normal case */ + timediff = timenow - timeend; + } else { + if ((TIMER_LOAD_VAL - timeend + timenow) <= + countticks) { + /* overflow */ + timediff = TIMER_LOAD_VAL - timeend + timenow; + } else { + /* missed the exact match */ + break; + } + } + } while (timediff > 0); +} + +/* Timer without interrupts */ +ulong get_timer(ulong base) +{ + return get_timer_masked() - base; +} + +/* + * This function is derived from PowerPC code (read timebase as long long). + * On ARM it just returns the timer value. + */ +unsigned long long get_ticks(void) +{ + return get_timer(0); +} + +/* + * This function is derived from PowerPC code (timebase clock frequency). + * On ARM it returns the number of timer ticks per second. + */ +ulong get_tbclk(void) +{ + return CONFIG_SYS_HZ; +} diff --git a/arch/arm/mach-zynq/u-boot-spl.lds b/arch/arm/mach-zynq/u-boot-spl.lds new file mode 100644 index 0000000000..0f2f756f83 --- /dev/null +++ b/arch/arm/mach-zynq/u-boot-spl.lds @@ -0,0 +1,62 @@ +/* + * Copyright (c) 2014 Xilinx, Inc. Michal Simek + * Copyright (c) 2004-2008 Texas Instruments + * + * (C) Copyright 2002 + * Gary Jennejohn, DENX Software Engineering, + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +MEMORY { .sram : ORIGIN = CONFIG_SPL_TEXT_BASE,\ + LENGTH = CONFIG_SPL_MAX_SIZE } +MEMORY { .sdram : ORIGIN = CONFIG_SPL_BSS_START_ADDR, \ + LENGTH = CONFIG_SPL_BSS_MAX_SIZE } + +OUTPUT_FORMAT("elf32-littlearm", "elf32-littlearm", "elf32-littlearm") +OUTPUT_ARCH(arm) +ENTRY(_start) +SECTIONS +{ + . = ALIGN(4); + .text : + { + __image_copy_start = .; + *(.vectors) + CPUDIR/start.o (.text*) + *(.text*) + } > .sram + + . = ALIGN(4); + .rodata : { + *(SORT_BY_ALIGNMENT(SORT_BY_NAME(.rodata*))) + } > .sram + + . = ALIGN(4); + .data : { + *(.data*) + } > .sram + + . = ALIGN(4); + + . = .; + + __image_copy_end = .; + + _end = .; + + /* Move BSS section to RAM because of FAT */ + .bss (NOLOAD) : { + __bss_start = .; + *(.bss*) + . = ALIGN(4); + __bss_end = .; + } > .sdram + + /DISCARD/ : { *(.dynsym) } + /DISCARD/ : { *(.dynstr*) } + /DISCARD/ : { *(.dynamic*) } + /DISCARD/ : { *(.plt*) } + /DISCARD/ : { *(.interp*) } + /DISCARD/ : { *(.gnu*) } +} diff --git a/arch/arm/mach-zynq/u-boot.lds b/arch/arm/mach-zynq/u-boot.lds new file mode 100644 index 0000000000..4dc9bb0102 --- /dev/null +++ b/arch/arm/mach-zynq/u-boot.lds @@ -0,0 +1,105 @@ +/* + * Copyright (c) 2004-2008 Texas Instruments + * + * (C) Copyright 2002 + * Gary Jennejohn, DENX Software Engineering, + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +OUTPUT_FORMAT("elf32-littlearm", "elf32-littlearm", "elf32-littlearm") +OUTPUT_ARCH(arm) +ENTRY(_start) +SECTIONS +{ + . = 0x00000000; + + . = ALIGN(4); + .text : + { + *(.__image_copy_start) + *(.vectors) + CPUDIR/start.o (.text*) + *(.text*) + } + + . = ALIGN(4); + .rodata : { *(SORT_BY_ALIGNMENT(SORT_BY_NAME(.rodata*))) } + + . = ALIGN(4); + .data : { + *(.data*) + } + + . = ALIGN(4); + + . = .; + + . = ALIGN(4); + .u_boot_list : { + KEEP(*(SORT(.u_boot_list*))); + } + + . = ALIGN(4); + + .image_copy_end : + { + *(.__image_copy_end) + } + + .rel_dyn_start : + { + *(.__rel_dyn_start) + } + + .rel.dyn : { + *(.rel*) + } + + .rel_dyn_end : + { + *(.__rel_dyn_end) + } + + .end : + { + *(.__end) + } + + _image_binary_end = .; + +/* + * Compiler-generated __bss_start and __bss_end, see arch/arm/lib/bss.c + * __bss_base and __bss_limit are for linker only (overlay ordering) + */ + + .bss_start __rel_dyn_start (OVERLAY) : { + KEEP(*(.__bss_start)); + __bss_base = .; + } + + .bss __bss_base (OVERLAY) : { + *(.bss*) + . = ALIGN(4); + __bss_limit = .; + } + + .bss_end __bss_limit (OVERLAY) : { + KEEP(*(.__bss_end)); + } + + /* + * Zynq needs to discard these sections because the user + * is expected to pass this image on to tools for boot.bin + * generation that require them to be dropped. + */ + /DISCARD/ : { *(.dynsym) } + /DISCARD/ : { *(.dynbss*) } + /DISCARD/ : { *(.dynstr*) } + /DISCARD/ : { *(.dynamic*) } + /DISCARD/ : { *(.plt*) } + /DISCARD/ : { *(.interp*) } + /DISCARD/ : { *(.gnu*) } + /DISCARD/ : { *(.ARM.exidx*) } + /DISCARD/ : { *(.gnu.linkonce.armexidx.*) } +} -- cgit v1.2.1