[U-Boot] [PATCH 3/3] ARM:AM33XX: Add SPL support for AM335X EVM
Chandan Nath
chandan.nath at ti.com
Wed Dec 21 14:03:21 CET 2011
This patch is added to support SPL feature on AM335X
platform. In this patch, MMC1 is configured as boot
device for SPL and support for other devices will be
added in the next patch series.
Signed-off-by: Chandan Nath <chandan.nath at ti.com>
Signed-off-by: Tom Rini <trini at ti.com>
---
arch/arm/cpu/armv7/am33xx/board.c | 74 +++++++++++++++++++++++-
arch/arm/cpu/armv7/am33xx/config.mk | 18 ++++++
arch/arm/cpu/armv7/am33xx/emif4.c | 2 +-
arch/arm/cpu/armv7/am33xx/lowlevel_init.S | 24 ++++++--
arch/arm/cpu/armv7/omap-common/spl.c | 11 +++-
arch/arm/include/asm/arch-am33xx/common_def.h | 22 +++++++
arch/arm/include/asm/arch-am33xx/hardware.h | 5 ++
arch/arm/include/asm/arch-am33xx/sys_proto.h | 1 +
arch/arm/include/asm/omap_common.h | 8 +++
board/ti/am335x/common_def.h | 24 --------
board/ti/am335x/evm.c | 2 +-
board/ti/am335x/mux.c | 2 +-
include/configs/am335x_evm.h | 39 ++++++++++++-
spl/Makefile | 10 ++-
14 files changed, 196 insertions(+), 46 deletions(-)
create mode 100644 arch/arm/cpu/armv7/am33xx/config.mk
create mode 100644 arch/arm/include/asm/arch-am33xx/common_def.h
delete mode 100644 board/ti/am335x/common_def.h
diff --git a/arch/arm/cpu/armv7/am33xx/board.c b/arch/arm/cpu/armv7/am33xx/board.c
index 312643c..647edaa 100644
--- a/arch/arm/cpu/armv7/am33xx/board.c
+++ b/arch/arm/cpu/armv7/am33xx/board.c
@@ -21,17 +21,52 @@
#include <asm/arch/hardware.h>
#include <asm/arch/ddr_defs.h>
#include <asm/arch/clock.h>
+#include <asm/arch/mmc_host_def.h>
+#include <asm/arch/common_def.h>
#include <asm/io.h>
+#include <asm/omap_common.h>
DECLARE_GLOBAL_DATA_PTR;
struct wd_timer *wdtimer = (struct wd_timer *)WDT_BASE;
struct gptimer *timer_base = (struct gptimer *)CONFIG_SYS_TIMERBASE;
+struct uart_sys *uart_base = (struct uart_sys *)DEFAULT_UART_BASE;
+
+#ifdef CONFIG_SPL_BUILD
+u32 am33xx_boot_device = BOOT_DEVICE_MMC1;
+
+u32 omap_boot_device(void)
+{
+ return am33xx_boot_device;
+}
+
+u32 omap_boot_mode(void)
+{
+ switch (omap_boot_device()) {
+ case BOOT_DEVICE_MMC2:
+ return MMCSD_MODE_RAW;
+ case BOOT_DEVICE_MMC1:
+ return MMCSD_MODE_FAT;
+ break;
+ case BOOT_DEVICE_NAND:
+ return NAND_MODE_HW_ECC;
+ break;
+ default:
+ puts("spl: ERROR: unknown device - can't select boot mode\n");
+ hang();
+ }
+}
+
+/* UART Defines */
+#define UART_RESET (0x1 << 1)
+#define UART_CLK_RUNNING_MASK 0x1
+#define UART_SMART_IDLE_EN (0x1 << 0x3)
+#endif
/*
* early system init of muxing and clocks.
*/
-void s_init(u32 in_ddr)
+void s_init(void)
{
/* WDT1 is already running when the bootloader gets control
* Disable it to avoid "random" resets
@@ -43,12 +78,37 @@ void s_init(u32 in_ddr)
while (readl(&wdtimer->wdtwwps) != 0x0)
;
+#ifdef CONFIG_SPL_BUILD
/* Setup the PLLs and the clocks for the peripherals */
-#ifdef CONFIG_SETUP_PLL
pll_init();
+
+ /* UART softreset */
+ u32 regVal;
+
+ enable_uart0_pin_mux();
+
+ regVal = readl(&uart_base->uartsyscfg);
+ regVal |= UART_RESET;
+ writel(regVal, &uart_base->uartsyscfg);
+ while ((readl(&uart_base->uartsyssts) &
+ UART_CLK_RUNNING_MASK) != UART_CLK_RUNNING_MASK)
+ ;
+
+ /* Disable smart idle */
+ regVal = readl(&uart_base->uartsyscfg);
+ regVal |= UART_SMART_IDLE_EN;
+ writel(regVal, &uart_base->uartsyscfg);
+
+ /* Initialize the Timer */
+ init_timer();
+
+ preloader_console_init();
+
+ config_ddr();
#endif
- if (!in_ddr)
- config_ddr();
+
+ /* Enable MMC0 */
+ enable_mmc0_pin_mux();
}
/* Initialize timer */
@@ -71,3 +131,9 @@ int board_mmc_init(bd_t *bis)
return omap_mmc_init(0);
}
#endif
+
+void setup_clocks_for_console(void)
+{
+ /* Not yet implemented */
+ return;
+}
diff --git a/arch/arm/cpu/armv7/am33xx/config.mk b/arch/arm/cpu/armv7/am33xx/config.mk
new file mode 100644
index 0000000..5750bbd
--- /dev/null
+++ b/arch/arm/cpu/armv7/am33xx/config.mk
@@ -0,0 +1,18 @@
+#
+# Copyright (C) 2011, Texas Instruments, Incorporated - http://www.ti.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 "as is" WITHOUT ANY WARRANTY of any
+# kind, whether express or implied; without even the implied warranty
+# of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+ifdef CONFIG_SPL_BUILD
+ALL-y += $(OBJTREE)/MLO
+else
+ALL-y += $(obj)u-boot.img
+endif
diff --git a/arch/arm/cpu/armv7/am33xx/emif4.c b/arch/arm/cpu/armv7/am33xx/emif4.c
index 1318365..2f4164d 100644
--- a/arch/arm/cpu/armv7/am33xx/emif4.c
+++ b/arch/arm/cpu/armv7/am33xx/emif4.c
@@ -46,7 +46,7 @@ void dram_init_banksize(void)
}
-#ifdef CONFIG_AM335X_CONFIG_DDR
+#ifdef CONFIG_SPL_BUILD
static void data_macro_config(int dataMacroNum)
{
struct ddr_data data;
diff --git a/arch/arm/cpu/armv7/am33xx/lowlevel_init.S b/arch/arm/cpu/armv7/am33xx/lowlevel_init.S
index 17c962f..1d3f0d5 100644
--- a/arch/arm/cpu/armv7/am33xx/lowlevel_init.S
+++ b/arch/arm/cpu/armv7/am33xx/lowlevel_init.S
@@ -22,16 +22,19 @@
#include <config.h>
#include <asm/arch/hardware.h>
-_mark1:
- .word mark1
-_lowlevel_init1:
- .word lowlevel_init
-_s_init_start:
- .word s_init_start
-
_TEXT_BASE:
.word CONFIG_SYS_TEXT_BASE /* sdram load addr from config.mk */
+.global save_boot_params
+save_boot_params:
+#ifdef CONFIG_SPL_BUILD
+ ldr r4, =am33xx_boot_device
+ ldr r5, [r0, #BOOT_DEVICE_OFFSET]
+ and r5, r5, #BOOT_DEVICE_MASK
+ str r5, [r4]
+#endif
+ bx lr
+
/*****************************************************************************
* lowlevel_init: - Platform low level init.
****************************************************************************/
@@ -70,3 +73,10 @@ s_init_start:
SRAM_STACK:
/* Place stack at the top */
.word LOW_LEVEL_SRAM_STACK
+
+_mark1:
+ .word mark1
+_lowlevel_init1:
+ .word lowlevel_init
+_s_init_start:
+ .word s_init_start
diff --git a/arch/arm/cpu/armv7/omap-common/spl.c b/arch/arm/cpu/armv7/omap-common/spl.c
index d177652..62688eb 100644
--- a/arch/arm/cpu/armv7/omap-common/spl.c
+++ b/arch/arm/cpu/armv7/omap-common/spl.c
@@ -223,8 +223,9 @@ void board_init_r(gd_t *id, ulong dummy)
debug(">>spl:board_init_r()\n");
timer_init();
+#ifdef CONFIG_I2C
i2c_init(CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
-
+#endif
boot_device = omap_boot_device();
debug("boot device - %d\n", boot_device);
switch (boot_device) {
@@ -249,6 +250,14 @@ void board_init_r(gd_t *id, ulong dummy)
}
}
+void __omap_rev_string(char *str)
+{
+ sprintf(str, "Revision detection unimplemented");
+}
+
+void omap_rev_string(char *str)
+ __attribute__((weak, alias("__omap_rev_string")));
+
void preloader_console_init(void)
{
const char *u_boot_rev = U_BOOT_VERSION;
diff --git a/arch/arm/include/asm/arch-am33xx/common_def.h b/arch/arm/include/asm/arch-am33xx/common_def.h
new file mode 100644
index 0000000..767932d
--- /dev/null
+++ b/arch/arm/include/asm/arch-am33xx/common_def.h
@@ -0,0 +1,22 @@
+/*
+ * common_def.h
+ *
+ * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.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 version 2.
+ *
+ * This program is distributed "as is" WITHOUT ANY WARRANTY of any
+ * kind, whether express or implied; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#ifndef __COMMON_DEF_H__
+#define __COMMON_DEF_H__
+
+extern void enable_uart0_pin_mux(void);
+extern void enable_mmc0_pin_mux(void);
+
+#endif/*__COMMON_DEF_H__ */
diff --git a/arch/arm/include/asm/arch-am33xx/hardware.h b/arch/arm/include/asm/arch-am33xx/hardware.h
index 0ec22eb..aac2e48 100644
--- a/arch/arm/include/asm/arch-am33xx/hardware.h
+++ b/arch/arm/include/asm/arch-am33xx/hardware.h
@@ -78,4 +78,9 @@
#define DDRPHY_0_CONFIG_BASE (CTRL_BASE + 0x1400)
#define DDRPHY_CONFIG_BASE DDRPHY_0_CONFIG_BASE
+/* ROM code defines */
+/* Boot device */
+#define BOOT_DEVICE_MASK 0xFF
+#define BOOT_DEVICE_OFFSET 0x8
+
#endif /* __AM33XX_HARDWARE_H */
diff --git a/arch/arm/include/asm/arch-am33xx/sys_proto.h b/arch/arm/include/asm/arch-am33xx/sys_proto.h
index 09ed650..6c58f1b 100644
--- a/arch/arm/include/asm/arch-am33xx/sys_proto.h
+++ b/arch/arm/include/asm/arch-am33xx/sys_proto.h
@@ -29,4 +29,5 @@ int print_cpuinfo(void);
#endif
u32 get_device_type(void);
+void setup_clocks_for_console(void);
#endif
diff --git a/arch/arm/include/asm/omap_common.h b/arch/arm/include/asm/omap_common.h
index d3cb857..ef19d13 100644
--- a/arch/arm/include/asm/omap_common.h
+++ b/arch/arm/include/asm/omap_common.h
@@ -39,16 +39,24 @@ void preloader_console_init(void);
/* Boot device */
#define BOOT_DEVICE_NONE 0
#define BOOT_DEVICE_XIP 1
+#if defined(CONFIG_OMAP54XX) || defined(CONFIG_OMAP44XX)
#define BOOT_DEVICE_XIPWAIT 2
#define BOOT_DEVICE_NAND 3
#define BOOT_DEVICE_ONE_NAND 4
#define BOOT_DEVICE_MMC1 5
#define BOOT_DEVICE_MMC2 6
+#elif defined(CONFIG_AM33XX) /* AM33XX */
+#define BOOT_DEVICE_NAND 5
+#define BOOT_DEVICE_MMC1 8
+#define BOOT_DEVICE_MMC2 0 /* eMMC, TODO */
+#define BOOT_DEVICE_UART 65
+#endif
/* Boot type */
#define MMCSD_MODE_UNDEFINED 0
#define MMCSD_MODE_RAW 1
#define MMCSD_MODE_FAT 2
+#define NAND_MODE_HW_ECC 3
u32 omap_boot_device(void);
u32 omap_boot_mode(void);
diff --git a/board/ti/am335x/common_def.h b/board/ti/am335x/common_def.h
deleted file mode 100644
index 1696d60..0000000
--- a/board/ti/am335x/common_def.h
+++ /dev/null
@@ -1,24 +0,0 @@
-/*
- * common_def.h
- *
- * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.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 version 2.
- *
- * This program is distributed "as is" WITHOUT ANY WARRANTY of any
- * kind, whether express or implied; without even the implied warranty
- * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- */
-
-#ifndef __COMMON_DEF_H__
-#define __COMMON_DEF_H__
-
-extern void enable_uart0_pin_mux(void);
-extern void configure_evm_pin_mux(unsigned char daughter_board_id,
- unsigned short daughter_board_profile,
- unsigned char daughter_board_flag);
-
-#endif/*__COMMON_DEF_H__ */
diff --git a/board/ti/am335x/evm.c b/board/ti/am335x/evm.c
index b4eddd8..6a9f788 100644
--- a/board/ti/am335x/evm.c
+++ b/board/ti/am335x/evm.c
@@ -16,7 +16,7 @@
#include <common.h>
#include <asm/arch/cpu.h>
#include <asm/arch/hardware.h>
-#include "common_def.h"
+#include <asm/arch/common_def.h>
#include <serial.h>
DECLARE_GLOBAL_DATA_PTR;
diff --git a/board/ti/am335x/mux.c b/board/ti/am335x/mux.c
index df11752..c2a61bd 100644
--- a/board/ti/am335x/mux.c
+++ b/board/ti/am335x/mux.c
@@ -14,7 +14,7 @@
*/
#include <config.h>
-#include "common_def.h"
+#include <asm/arch/common_def.h>
#include <asm/arch/hardware.h>
#include <asm/io.h>
diff --git a/include/configs/am335x_evm.h b/include/configs/am335x_evm.h
index 086d4ef..020278c 100644
--- a/include/configs/am335x_evm.h
+++ b/include/configs/am335x_evm.h
@@ -27,8 +27,6 @@
#include <asm/arch/cpu.h>
#include <asm/arch/hardware.h>
-#define CONFIG_SETUP_PLL
-#define CONFIG_AM335X_CONFIG_DDR
#define CONFIG_ENV_SIZE 0x400
#define CONFIG_SYS_MALLOC_LEN (CONFIG_ENV_SIZE + (8 * 1024))
#define CONFIG_SYS_PROMPT "U-Boot# "
@@ -119,7 +117,42 @@
#define CONFIG_ENV_IS_NOWHERE
-#define CONFIG_SYS_TEXT_BASE 0x402f0400
+/* Defines for SPL */
+#define CONFIG_SPL
+#define CONFIG_SPL_TEXT_BASE 0x402F0400
+#define CONFIG_SPL_MAX_SIZE (46 * 1024)
+#define CONFIG_SPL_STACK LOW_LEVEL_SRAM_STACK
+
+#define CONFIG_SPL_BSS_START_ADDR 0x80000000
+#define CONFIG_SPL_BSS_MAX_SIZE 0x80000 /* 512 KB */
+
+#define CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR 0x300 /* address 0x60000 */
+#define CONFIG_SYS_U_BOOT_MAX_SIZE_SECTORS 0x200 /* 256 KB */
+#define CONFIG_SYS_MMC_SD_FAT_BOOT_PARTITION 1
+#define CONFIG_SPL_FAT_LOAD_PAYLOAD_NAME "u-boot.img"
+#define CONFIG_SPL_MMC_SUPPORT
+#define CONFIG_SPL_FAT_SUPPORT
+
+#define CONFIG_SPL_LIBCOMMON_SUPPORT
+#define CONFIG_SPL_LIBDISK_SUPPORT
+#define CONFIG_SPL_LIBGENERIC_SUPPORT
+#define CONFIG_SPL_SERIAL_SUPPORT
+#define CONFIG_SPL_LDSCRIPT "$(CPUDIR)/omap-common/u-boot-spl.lds"
+
+/*
+ * 1MB into the SDRAM to allow for SPL's bss at the beginning of SDRAM
+ * 64 bytes before this address should be set aside for u-boot.img's
+ * header. That is 0x800FFFC0--0x80100000 should not be used for any
+ * other needs.
+ */
+#define CONFIG_SYS_TEXT_BASE 0x80800000
+#define CONFIG_SYS_SPL_MALLOC_START 0x80208000
+#define CONFIG_SYS_SPL_MALLOC_SIZE 0x100000
+
+/* Since SPL did all of this for us, we don't need to do it twice. */
+#ifndef CONFIG_SPL_BUILD
+#define CONFIG_SKIP_LOWLEVEL_INIT
+#endif
/* Unsupported features */
#undef CONFIG_USE_IRQ
diff --git a/spl/Makefile b/spl/Makefile
index 95ecce1..e3668ea 100644
--- a/spl/Makefile
+++ b/spl/Makefile
@@ -47,10 +47,7 @@ LIBS-$(CONFIG_SPL_SPI_SUPPORT) += drivers/spi/libspi.o
LIBS-$(CONFIG_SPL_FAT_SUPPORT) += fs/fat/libfat.o
LIBS-$(CONFIG_SPL_LIBGENERIC_SUPPORT) += lib/libgeneric.o
-ifeq ($(SOC),omap3)
-LIBS-y += $(CPUDIR)/omap-common/libomap-common.o
-endif
-ifeq ($(SOC),omap4)
+ifneq ($(CONFIG_AM335X)$(CONFIG_OMAP34XX)$(CONFIG_OMAP44XX)$(CONFIG_OMAP54XX),)
LIBS-y += $(CPUDIR)/omap-common/libomap-common.o
endif
@@ -90,6 +87,11 @@ $(OBJTREE)/MLO: $(obj)u-boot-spl.bin
$(OBJTREE)/tools/mkimage -T omapimage \
-a $(CONFIG_SPL_TEXT_BASE) -d $< $@
endif
+ifdef CONFIG_AM33XX
+$(OBJTREE)/MLO: $(obj)u-boot-spl.bin
+ $(OBJTREE)/tools/mkimage -T omapimage \
+ -a $(CONFIG_SPL_TEXT_BASE) -d $< $@
+endif
ALL-y += $(obj)u-boot-spl.bin
--
1.7.1
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