diff options
Diffstat (limited to 'arch/arm/cpu/armv7/uniphier/ph1-pro4')
| -rw-r--r-- | arch/arm/cpu/armv7/uniphier/ph1-pro4/Makefile | 1 | ||||
| -rw-r--r-- | arch/arm/cpu/armv7/uniphier/ph1-pro4/lowlevel_debug.S | 39 |
2 files changed, 40 insertions, 0 deletions
diff --git a/arch/arm/cpu/armv7/uniphier/ph1-pro4/Makefile b/arch/arm/cpu/armv7/uniphier/ph1-pro4/Makefile index cee78781f6..8206e2a354 100644 --- a/arch/arm/cpu/armv7/uniphier/ph1-pro4/Makefile +++ b/arch/arm/cpu/armv7/uniphier/ph1-pro4/Makefile @@ -5,6 +5,7 @@ obj-$(CONFIG_DISPLAY_BOARDINFO) += board_info.o obj-$(if $(CONFIG_OF_CONTROL),,y) += platdevice.o obj-y += boot-mode.o +obj-$(CONFIG_DEBUG_LL) += lowlevel_debug.o obj-$(CONFIG_SOC_INIT) += sbc_init.o sg_init.o pll_init.o clkrst_init.o obj-$(CONFIG_BOARD_POSTCLK_INIT) += pinctrl.o obj-$(CONFIG_DRAM_INIT) += pll_spectrum.o umc_init.o ddrphy_init.o diff --git a/arch/arm/cpu/armv7/uniphier/ph1-pro4/lowlevel_debug.S b/arch/arm/cpu/armv7/uniphier/ph1-pro4/lowlevel_debug.S new file mode 100644 index 0000000000..a793b7c118 --- /dev/null +++ b/arch/arm/cpu/armv7/uniphier/ph1-pro4/lowlevel_debug.S @@ -0,0 +1,39 @@ +/* + * On-chip UART initializaion for low-level debugging + * + * Copyright (C) 2014 Panasonic Corporation + * Author: Masahiro Yamada <yamada.m@jp.panasonic.com> + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <linux/linkage.h> +#include <asm/arch/sc-regs.h> +#include <asm/arch/sg-regs.h> + +#define UART_CLK 73728000 +#include <asm/arch/debug-uart.S> + +ENTRY(setup_lowlevel_debug) + ldr r0, =SC_CLKCTRL + ldr r1, [r0] + orr r1, r1, #SC_CLKCTRL_CLK_PERI + str r1, [r0] + + init_debug_uart r0, r1, r2 + + /* UART Port 0 */ + set_pinsel 127, 0, r0, r1 + set_pinsel 128, 0, r0, r1 + + ldr r0, =SG_LOADPINCTRL + mov r1, #1 + str r1, [r0] + + ldr r0, =SG_IECTRL + ldr r1, [r0] + orr r1, r1, #1 + str r1, [r0] + + mov pc, lr +ENDPROC(setup_lowlevel_debug) |
