omap5: Add minimal support for omap5430.

This patch adds the minimal support for OMAP5. The platform and machine
specific headers and sources updated for OMAP5430.

OMAP5430 is Texas Instrument's SOC based on ARM Cortex-A15 SMP architecture.
It's a dual core SOC with GIC used for interrupt handling and SCU for cache
coherency.

Also moved some part of code from the basic platform support that can be made
common for OMAP4/5. Rest is kept out seperately. The same approach is followed
for clocks and emif support in the subsequent patches.

Signed-off-by: sricharan <r.sricharan@ti.com>
Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>

4 files changed, 168 insertions, 140 deletions

diff --git a/arch/arm/cpu/armv7/omap4/Makefile b/arch/arm/cpu/armv7/omap4/Makefile
index d91272958f..606538be91 100644
--- a/arch/arm/cpu/armv7/omap4/Makefile
+++ b/arch/arm/cpu/armv7/omap4/Makefile
@@ -26,10 +26,7 @@ include $(TOPDIR)/config.mk
 LIB	=  $(obj)lib$(SOC).o
 
 COBJS	+= sdram_elpida.o
-
-ifndef CONFIG_SPL_BUILD
-COBJS	+= sys_info.o
-endif
+COBJS	+= hwinit.o
 
 SRCS	:= $(SOBJS:.o=.S) $(COBJS:.o=.c)
 OBJS	:= $(addprefix $(obj),$(COBJS) $(SOBJS))
diff --git a/arch/arm/cpu/armv7/omap4/hwinit.c b/arch/arm/cpu/armv7/omap4/hwinit.c
new file mode 100644
index 0000000000..78b3cabb07
--- /dev/null
+++ b/arch/arm/cpu/armv7/omap4/hwinit.c
@@ -0,0 +1,167 @@
+/*
+ *
+ * Common functions for OMAP4 based boards
+ *
+ * (C) Copyright 2010
+ * Texas Instruments, <www.ti.com>
+ *
+ * Author :
+ *	Aneesh V	<aneesh@ti.com>
+ *	Steve Sakoman	<steve@sakoman.com>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+#include <common.h>
+#include <asm/armv7.h>
+#include <asm/arch/cpu.h>
+#include <asm/arch/sys_proto.h>
+#include <asm/sizes.h>
+#include <asm/arch/emif.h>
+#include <asm/arch/gpio.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+u32 *const omap4_revision = (u32 *)OMAP4_SRAM_SCRATCH_OMAP4_REV;
+
+static const struct gpio_bank gpio_bank_44xx[6] = {
+	{ (void *)OMAP44XX_GPIO1_BASE, METHOD_GPIO_24XX },
+	{ (void *)OMAP44XX_GPIO2_BASE, METHOD_GPIO_24XX },
+	{ (void *)OMAP44XX_GPIO3_BASE, METHOD_GPIO_24XX },
+	{ (void *)OMAP44XX_GPIO4_BASE, METHOD_GPIO_24XX },
+	{ (void *)OMAP44XX_GPIO5_BASE, METHOD_GPIO_24XX },
+	{ (void *)OMAP44XX_GPIO6_BASE, METHOD_GPIO_24XX },
+};
+
+const struct gpio_bank *const omap_gpio_bank = gpio_bank_44xx;
+
+#ifdef CONFIG_SPL_BUILD
+/*
+ * Some tuning of IOs for optimal power and performance
+ */
+void do_io_settings(void)
+{
+	u32 lpddr2io;
+	struct control_lpddr2io_regs *lpddr2io_regs =
+		(struct control_lpddr2io_regs *)LPDDR2_IO_REGS_BASE;
+	struct omap4_sys_ctrl_regs *const ctrl =
+		(struct omap4_sys_ctrl_regs *)SYSCTRL_GENERAL_CORE_BASE;
+
+	u32 omap4_rev = omap_revision();
+
+	if (omap4_rev == OMAP4430_ES1_0)
+		lpddr2io = CONTROL_LPDDR2IO_SLEW_125PS_DRV8_PULL_DOWN;
+	else if (omap4_rev == OMAP4430_ES2_0)
+		lpddr2io = CONTROL_LPDDR2IO_SLEW_325PS_DRV8_GATE_KEEPER;
+	else
+		lpddr2io = CONTROL_LPDDR2IO_SLEW_315PS_DRV12_PULL_DOWN;
+
+	/* EMIF1 */
+	writel(lpddr2io, &lpddr2io_regs->control_lpddr2io1_0);
+	writel(lpddr2io, &lpddr2io_regs->control_lpddr2io1_1);
+	/* No pull for GR10 as per hw team's recommendation */
+	writel(lpddr2io & ~LPDDR2IO_GR10_WD_MASK,
+		&lpddr2io_regs->control_lpddr2io1_2);
+	writel(CONTROL_LPDDR2IO_3_VAL, &lpddr2io_regs->control_lpddr2io1_3);
+
+	/* EMIF2 */
+	writel(lpddr2io, &lpddr2io_regs->control_lpddr2io2_0);
+	writel(lpddr2io, &lpddr2io_regs->control_lpddr2io2_1);
+	/* No pull for GR10 as per hw team's recommendation */
+	writel(lpddr2io & ~LPDDR2IO_GR10_WD_MASK,
+		&lpddr2io_regs->control_lpddr2io2_2);
+	writel(CONTROL_LPDDR2IO_3_VAL, &lpddr2io_regs->control_lpddr2io2_3);
+
+	/*
+	 * Some of these settings (TRIM values) come from eFuse and are
+	 * in turn programmed in the eFuse at manufacturing time after
+	 * calibration of the device. Do the software over-ride only if
+	 * the device is not correctly trimmed
+	 */
+	if (!(readl(&ctrl->control_std_fuse_opp_bgap) & 0xFFFF)) {
+
+		writel(LDOSRAM_VOLT_CTRL_OVERRIDE,
+			&ctrl->control_ldosram_iva_voltage_ctrl);
+
+		writel(LDOSRAM_VOLT_CTRL_OVERRIDE,
+			&ctrl->control_ldosram_mpu_voltage_ctrl);
+
+		writel(LDOSRAM_VOLT_CTRL_OVERRIDE,
+			&ctrl->control_ldosram_core_voltage_ctrl);
+	}
+
+	if (!readl(&ctrl->control_efuse_1))
+		writel(CONTROL_EFUSE_1_OVERRIDE, &ctrl->control_efuse_1);
+
+	if (!readl(&ctrl->control_efuse_2))
+		writel(CONTROL_EFUSE_2_OVERRIDE, &ctrl->control_efuse_2);
+}
+#endif
+
+void init_omap_revision(void)
+{
+	/*
+	 * For some of the ES2/ES1 boards ID_CODE is not reliable:
+	 * Also, ES1 and ES2 have different ARM revisions
+	 * So use ARM revision for identification
+	 */
+	unsigned int arm_rev = cortex_rev();
+
+	switch (arm_rev) {
+	case MIDR_CORTEX_A9_R0P1:
+		*omap4_revision = OMAP4430_ES1_0;
+		break;
+	case MIDR_CORTEX_A9_R1P2:
+		switch (readl(CONTROL_ID_CODE)) {
+		case OMAP4_CONTROL_ID_CODE_ES2_0:
+			*omap4_revision = OMAP4430_ES2_0;
+			break;
+		case OMAP4_CONTROL_ID_CODE_ES2_1:
+			*omap4_revision = OMAP4430_ES2_1;
+			break;
+		case OMAP4_CONTROL_ID_CODE_ES2_2:
+			*omap4_revision = OMAP4430_ES2_2;
+			break;
+		default:
+			*omap4_revision = OMAP4430_ES2_0;
+			break;
+		}
+		break;
+	case MIDR_CORTEX_A9_R1P3:
+		*omap4_revision = OMAP4430_ES2_3;
+		break;
+	case MIDR_CORTEX_A9_R2P10:
+		*omap4_revision = OMAP4460_ES1_0;
+		break;
+	default:
+		*omap4_revision = OMAP4430_SILICON_ID_INVALID;
+		break;
+	}
+}
+
+#ifndef CONFIG_SYS_L2CACHE_OFF
+void v7_outer_cache_enable(void)
+{
+	set_pl310_ctrl_reg(1);
+}
+
+void v7_outer_cache_disable(void)
+{
+	set_pl310_ctrl_reg(0);
+}
+#endif
diff --git a/arch/arm/cpu/armv7/omap4/omap4_mux_data.h b/arch/arm/cpu/armv7/omap4/omap4_mux_data.h
deleted file mode 100644
index b9403910c9..0000000000
--- a/arch/arm/cpu/armv7/omap4/omap4_mux_data.h
+++ /dev/null
@@ -1,83 +0,0 @@
- /*
- * (C) Copyright 2010
- * Texas Instruments Incorporated, <www.ti.com>
- *
- *	Balaji Krishnamoorthy	<balajitk@ti.com>
- *	Aneesh V		<aneesh@ti.com>
- *
- * See file CREDITS for list of people who contributed to this
- * project.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
- * MA 02111-1307 USA
- */
-#ifndef _OMAP4_MUX_DATA_H_
-#define _OMAP4_MUX_DATA_H_
-
-#include <asm/arch/mux_omap4.h>
-
-const struct pad_conf_entry core_padconf_array_essential[] = {
-
-{GPMC_AD0, (PTU | IEN | OFF_EN | OFF_PD | OFF_IN | M1)}, /* sdmmc2_dat0 */
-{GPMC_AD1, (PTU | IEN | OFF_EN | OFF_PD | OFF_IN | M1)}, /* sdmmc2_dat1 */
-{GPMC_AD2, (PTU | IEN | OFF_EN | OFF_PD | OFF_IN | M1)}, /* sdmmc2_dat2 */
-{GPMC_AD3, (PTU | IEN | OFF_EN | OFF_PD | OFF_IN | M1)}, /* sdmmc2_dat3 */
-{GPMC_AD4, (PTU | IEN | OFF_EN | OFF_PD | OFF_IN | M1)}, /* sdmmc2_dat4 */
-{GPMC_AD5, (PTU | IEN | OFF_EN | OFF_PD | OFF_IN | M1)}, /* sdmmc2_dat5 */
-{GPMC_AD6, (PTU | IEN | OFF_EN | OFF_PD | OFF_IN | M1)}, /* sdmmc2_dat6 */
-{GPMC_AD7, (PTU | IEN | OFF_EN | OFF_PD | OFF_IN | M1)}, /* sdmmc2_dat7 */
-{GPMC_NOE, (PTU | IEN | OFF_EN | OFF_OUT_PTD | M1)},	 /* sdmmc2_clk */
-{GPMC_NWE, (PTU | IEN | OFF_EN | OFF_PD | OFF_IN | M1)}, /* sdmmc2_cmd */
-{SDMMC1_CLK, (PTU | OFF_EN | OFF_OUT_PTD | M0)},	 /* sdmmc1_clk */
-{SDMMC1_CMD, (PTU | IEN | OFF_EN | OFF_PD | OFF_IN | M0)}, /* sdmmc1_cmd */
-{SDMMC1_DAT0, (PTU | IEN | OFF_EN | OFF_PD | OFF_IN | M0)}, /* sdmmc1_dat0 */
-{SDMMC1_DAT1, (PTU | IEN | OFF_EN | OFF_PD | OFF_IN | M0)}, /* sdmmc1_dat1 */
-{SDMMC1_DAT2, (PTU | IEN | OFF_EN | OFF_PD | OFF_IN | M0)}, /* sdmmc1_dat2 */
-{SDMMC1_DAT3, (PTU | IEN | OFF_EN | OFF_PD | OFF_IN | M0)}, /* sdmmc1_dat3 */
-{SDMMC1_DAT4, (PTU | IEN | OFF_EN | OFF_PD | OFF_IN | M0)}, /* sdmmc1_dat4 */
-{SDMMC1_DAT5, (PTU | IEN | OFF_EN | OFF_PD | OFF_IN | M0)}, /* sdmmc1_dat5 */
-{SDMMC1_DAT6, (PTU | IEN | OFF_EN | OFF_PD | OFF_IN | M0)}, /* sdmmc1_dat6 */
-{SDMMC1_DAT7, (PTU | IEN | OFF_EN | OFF_PD | OFF_IN | M0)}, /* sdmmc1_dat7 */
-{I2C1_SCL, (PTU | IEN | M0)},				/* i2c1_scl */
-{I2C1_SDA, (PTU | IEN | M0)},				/* i2c1_sda */
-{I2C2_SCL, (PTU | IEN | M0)},				/* i2c2_scl */
-{I2C2_SDA, (PTU | IEN | M0)},				/* i2c2_sda */
-{I2C3_SCL, (PTU | IEN | M0)},				/* i2c3_scl */
-{I2C3_SDA, (PTU | IEN | M0)},				/* i2c3_sda */
-{I2C4_SCL, (PTU | IEN | M0)},				/* i2c4_scl */
-{I2C4_SDA, (PTU | IEN | M0)},				/* i2c4_sda */
-{UART3_CTS_RCTX, (PTU | IEN | M0)},			/* uart3_tx */
-{UART3_RTS_SD, (M0)},					/* uart3_rts_sd */
-{UART3_RX_IRRX, (IEN | M0)},				/* uart3_rx */
-{UART3_TX_IRTX, (M0)}					/* uart3_tx */
-
-};
-
-const struct pad_conf_entry wkup_padconf_array_essential[] = {
-
-{PAD1_SR_SCL, (PTU | IEN | M0)}, /* sr_scl */
-{PAD0_SR_SDA, (PTU | IEN | M0)}, /* sr_sda */
-{PAD1_SYS_32K, (IEN | M0)}	 /* sys_32k */
-
-};
-
-const struct pad_conf_entry wkup_padconf_array_essential_4460[] = {
-
-{PAD1_FREF_CLK4_REQ, (M3)},	 /* gpio_wk7, TPS */
-
-};
-
-
-#endif  /* _OMAP4_MUX_DATA_H_ */
diff --git a/arch/arm/cpu/armv7/omap4/sys_info.c b/arch/arm/cpu/armv7/omap4/sys_info.c
deleted file mode 100644
index b9e57659f0..0000000000
--- a/arch/arm/cpu/armv7/omap4/sys_info.c
+++ /dev/null
@@ -1,53 +0,0 @@
-/*
- * (C) Copyright 2010
- * Texas Instruments, <www.ti.com>
- *
- * Author :
- *	Aneesh V	<aneesh@ti.com>
- *	Steve Sakoman	<steve@sakoman.com>
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
- * MA 02111-1307 USA
- */
-
-#include <common.h>
-#include <asm/arch/sys_proto.h>
-
-/*
- *  get_device_type(): tell if GP/HS/EMU/TST
- */
-u32 get_device_type(void)
-{
-	return 0;
-}
-
-/*
- * get_board_rev() - get board revision
- */
-u32 get_board_rev(void)
-{
-	return 0x20;
-}
-
-/*
- * Print CPU information
- */
-int print_cpuinfo(void)
-{
-
-	puts("CPU  : OMAP4430\n");
-
-	return 0;
-}