Patchwork [U-Boot,V2,4/5] ARM: OMAP: Cleanup boot parameters usage

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Submitter SRICHARAN R
Date April 24, 2013, 10:41 a.m.
Message ID <1366800085-27078-5-git-send-email-r.sricharan@ti.com>
Download mbox | patch
Permalink /patch/239157/
State Accepted
Delegated to: Tom Rini
Headers show

Comments

SRICHARAN R - April 24, 2013, 10:41 a.m.
The boot parameters are read from individual variables
assigned for each of them. This been corrected and now
they are stored as a part of the global data 'gd'
structure. So read them from 'gd' instead.

Signed-off-by: Sricharan R <r.sricharan@ti.com>
---
  [V2] Addressed comments and rebased on mainline.

 arch/arm/cpu/armv7/lowlevel_init.S             |    8 +++-
 arch/arm/cpu/armv7/omap-common/boot-common.c   |   31 +++++++--------
 arch/arm/cpu/armv7/omap-common/lowlevel_init.S |   50 +-----------------------
 arch/arm/include/asm/arch-omap4/sys_proto.h    |   11 ++----
 arch/arm/include/asm/arch-omap5/sys_proto.h    |   12 ++----
 arch/arm/include/asm/omap_common.h             |    3 ++
 common/spl/spl.c                               |   10 ++---
 include/configs/am335x_evm.h                   |    1 +
 include/configs/pcm051.h                       |    1 +
 include/configs/ti814x_evm.h                   |    1 +
 include/spl.h                                  |    1 -
 11 files changed, 38 insertions(+), 91 deletions(-)

Patch

diff --git a/arch/arm/cpu/armv7/lowlevel_init.S b/arch/arm/cpu/armv7/lowlevel_init.S
index 0d45528..0a15aa4 100644
--- a/arch/arm/cpu/armv7/lowlevel_init.S
+++ b/arch/arm/cpu/armv7/lowlevel_init.S
@@ -37,7 +37,13 @@  ENTRY(lowlevel_init)
 	 */
 	ldr	sp, =CONFIG_SYS_INIT_SP_ADDR
 	bic	sp, sp, #7 /* 8-byte alignment for ABI compliance */
-
+#ifdef CONFIG_SPL_BUILD
+	ldr	r8, =gdata
+#else
+	sub	sp, #GD_SIZE
+	bic	sp, sp, #7
+	mov	r8, sp
+#endif
 	/*
 	 * Save the old lr(passed in ip) and the current lr to stack
 	 */
diff --git a/arch/arm/cpu/armv7/omap-common/boot-common.c b/arch/arm/cpu/armv7/omap-common/boot-common.c
index 24cbe2d..bff7e9c 100644
--- a/arch/arm/cpu/armv7/omap-common/boot-common.c
+++ b/arch/arm/cpu/armv7/omap-common/boot-common.c
@@ -23,31 +23,17 @@ 
 #include <asm/arch/mmc_host_def.h>
 #include <asm/arch/sys_proto.h>
 
-/*
- * This is used to verify if the configuration header
- * was executed by rom code prior to control of transfer
- * to the bootloader. SPL is responsible for saving and
- * passing the boot_params pointer to the u-boot.
- */
-struct omap_boot_parameters boot_params __attribute__ ((section(".data")));
+DECLARE_GLOBAL_DATA_PTR;
 
 #ifdef CONFIG_SPL_BUILD
-/*
- * We use static variables because global data is not ready yet.
- * Initialized data is available in SPL right from the beginning.
- * We would not typically need to save these parameters in regular
- * U-Boot. This is needed only in SPL at the moment.
- */
-u32 omap_bootmode = MMCSD_MODE_FAT;
-
 u32 spl_boot_device(void)
 {
-	return (u32) (boot_params.omap_bootdevice);
+	return (u32) (gd->arch.omap_boot_params.omap_bootdevice);
 }
 
 u32 spl_boot_mode(void)
 {
-	return omap_bootmode;
+	return gd->arch.omap_boot_params.omap_bootmode;
 }
 
 void spl_board_init(void)
@@ -73,4 +59,15 @@  int board_mmc_init(bd_t *bis)
 	}
 	return 0;
 }
+
+void __noreturn jump_to_image_no_args(struct spl_image_info *spl_image)
+{
+	typedef void __noreturn (*image_entry_noargs_t)(u32 *);
+	image_entry_noargs_t image_entry =
+			(image_entry_noargs_t) spl_image->entry_point;
+
+	debug("image entry point: 0x%X\n", spl_image->entry_point);
+	/* Pass the saved boot_params from rom code */
+	image_entry((u32 *)&gd->arch.omap_boot_params);
+}
 #endif
diff --git a/arch/arm/cpu/armv7/omap-common/lowlevel_init.S b/arch/arm/cpu/armv7/omap-common/lowlevel_init.S
index 90b3c8a..c489536 100644
--- a/arch/arm/cpu/armv7/omap-common/lowlevel_init.S
+++ b/arch/arm/cpu/armv7/omap-common/lowlevel_init.S
@@ -28,59 +28,13 @@ 
 
 #include <config.h>
 #include <asm/arch/omap.h>
+#include <asm/omap_common.h>
 #include <asm/arch/spl.h>
 #include <linux/linkage.h>
 
 ENTRY(save_boot_params)
-	/*
-	 * See if the rom code passed pointer is valid:
-	 * It is not valid if it is not in non-secure SRAM
-	 * This may happen if you are booting with the help of
-	 * debugger
-	 */
-	ldr     r2, =NON_SECURE_SRAM_START
-	cmp	r2, r0
-	bgt	1f
-	ldr	r2, =NON_SECURE_SRAM_END
-	cmp	r2, r0
-	blt	1f
-
-	/*
-	 * store the boot params passed from rom code or saved
-	 * and passed by SPL
-	 */
-	cmp	r0, #0
-	beq	1f
-	ldr	r1, =boot_params
+	ldr	r1, =OMAP_SRAM_SCRATCH_BOOT_PARAMS
 	str	r0, [r1]
-#ifdef CONFIG_SPL_BUILD
-	/* Store the boot device in spl_boot_device */
-	ldrb	r2, [r0, #BOOT_DEVICE_OFFSET]	@ r1 <- value of boot device
-	and	r2, #BOOT_DEVICE_MASK
-	ldr	r3, =boot_params
-	strb	r2, [r3, #BOOT_DEVICE_OFFSET]	@ spl_boot_device <- r1
-
-	/*
-	 * boot mode is only valid for device that can be raw or FAT booted.
-	 * in other cases it may be fatal to look.  While platforms differ
-	 * in the values used for each MMC slot, they are contiguous.
-	 */
-	cmp	r2, #MMC_BOOT_DEVICES_START
-	blt	2f
-	cmp	r2, #MMC_BOOT_DEVICES_END
-	bgt	2f
-	/* Store the boot mode (raw/FAT) in omap_bootmode */
-	ldr	r2, [r0, #DEV_DESC_PTR_OFFSET]	@ get the device descriptor ptr
-	ldr	r2, [r2, #DEV_DATA_PTR_OFFSET]	@ get the pDeviceData ptr
-	ldr	r2, [r2, #BOOT_MODE_OFFSET]	@ get the boot mode
-	ldr	r3, =omap_bootmode
-	str	r2, [r3]
-#endif
-2:
-	ldrb	r2, [r0, #CH_FLAGS_OFFSET]
-	ldr	r3, =boot_params
-	strb	r2, [r3, #CH_FLAGS_OFFSET]
-1:
 	bx	lr
 ENDPROC(save_boot_params)
 
diff --git a/arch/arm/include/asm/arch-omap4/sys_proto.h b/arch/arm/include/asm/arch-omap4/sys_proto.h
index d5f1868..841388a 100644
--- a/arch/arm/include/asm/arch-omap4/sys_proto.h
+++ b/arch/arm/include/asm/arch-omap4/sys_proto.h
@@ -27,6 +27,8 @@ 
 #include <asm/omap_common.h>
 #include <asm/arch/mux_omap4.h>
 
+DECLARE_GLOBAL_DATA_PTR;
+
 struct omap_sysinfo {
 	char *board_string;
 };
@@ -58,13 +60,6 @@  void omap_vc_init(u16 speed_khz);
 int omap_vc_bypass_send_value(u8 sa, u8 reg_addr, u8 reg_data);
 u32 warm_reset(void);
 void force_emif_self_refresh(void);
-/*
- * This is used to verify if the configuration header
- * was executed by Romcode prior to control of transfer
- * to the bootloader. SPL is responsible for saving and
- * passing this to the u-boot.
- */
-extern struct omap_boot_parameters boot_params;
 
 static inline u32 running_from_sdram(void)
 {
@@ -84,7 +79,7 @@  static inline u8 uboot_loaded_by_spl(void)
 	 * variable by both SPL and u-boot.Check out for CHSETTINGS, which is a
 	 * mandatory section if CH is present.
 	 */
-	if ((boot_params.ch_flags) & (CH_FLAGS_CHSETTINGS))
+	if ((gd->arch.omap_boot_params.ch_flags) & (CH_FLAGS_CHSETTINGS))
 		return 0;
 	else
 		return running_from_sdram();
diff --git a/arch/arm/include/asm/arch-omap5/sys_proto.h b/arch/arm/include/asm/arch-omap5/sys_proto.h
index e66ab44..1099ec3 100644
--- a/arch/arm/include/asm/arch-omap5/sys_proto.h
+++ b/arch/arm/include/asm/arch-omap5/sys_proto.h
@@ -27,6 +27,8 @@ 
 #include <asm/omap_common.h>
 #include <asm/arch/clocks.h>
 
+DECLARE_GLOBAL_DATA_PTR;
+
 struct pad_conf_entry {
 	u32 offset;
 	u32 val;
@@ -65,14 +67,6 @@  void force_emif_self_refresh(void);
 void get_ioregs(const struct ctrl_ioregs **regs);
 void srcomp_enable(void);
 
-/*
- * This is used to verify if the configuration header
- * was executed by Romcode prior to control of transfer
- * to the bootloader. SPL is responsible for saving and
- * passing this to the u-boot.
- */
-extern struct omap_boot_parameters boot_params;
-
 static inline u32 running_from_sdram(void)
 {
 	u32 pc;
@@ -91,7 +85,7 @@  static inline u8 uboot_loaded_by_spl(void)
 	 * variable by both SPL and u-boot.Check out for CHSETTINGS, which is a
 	 * mandatory section if CH is present.
 	 */
-	if ((boot_params.ch_flags) & (CH_FLAGS_CHSETTINGS))
+	if ((gd->arch.omap_boot_params.ch_flags) & (CH_FLAGS_CHSETTINGS))
 		return 0;
 	else
 		return running_from_sdram();
diff --git a/arch/arm/include/asm/omap_common.h b/arch/arm/include/asm/omap_common.h
index 6b73d86..9db4b1b 100644
--- a/arch/arm/include/asm/omap_common.h
+++ b/arch/arm/include/asm/omap_common.h
@@ -25,6 +25,8 @@ 
 #ifndef	_OMAP_COMMON_H_
 #define	_OMAP_COMMON_H_
 
+#ifndef __ASSEMBLY__
+
 #include <common.h>
 
 #define NUM_SYS_CLKS	8
@@ -557,6 +559,7 @@  static inline u32 omap_revision(void)
 	extern u32 *const omap_si_rev;
 	return *omap_si_rev;
 }
+#endif
 
 /*
  * silicon revisions.
diff --git a/common/spl/spl.c b/common/spl/spl.c
index 6715e0d..e6aa89b 100644
--- a/common/spl/spl.c
+++ b/common/spl/spl.c
@@ -125,17 +125,13 @@  void spl_parse_image_header(const struct image_header *header)
 
 __weak void __noreturn jump_to_image_no_args(struct spl_image_info *spl_image)
 {
-	typedef void __noreturn (*image_entry_noargs_t)(u32 *);
+	typedef void __noreturn (*image_entry_noargs_t)(void);
+
 	image_entry_noargs_t image_entry =
 			(image_entry_noargs_t) spl_image->entry_point;
 
 	debug("image entry point: 0x%X\n", spl_image->entry_point);
-	/* Pass the saved boot_params from rom code */
-#if defined(CONFIG_VIRTIO) || defined(CONFIG_ZEBU)
-	image_entry = (image_entry_noargs_t)0x80100000;
-#endif
-	u32 boot_params_ptr_addr = (u32)&boot_params_ptr;
-	image_entry((u32 *)boot_params_ptr_addr);
+	image_entry();
 }
 
 #ifdef CONFIG_SPL_RAM_DEVICE
diff --git a/include/configs/am335x_evm.h b/include/configs/am335x_evm.h
index ef00306..ddfd52e 100644
--- a/include/configs/am335x_evm.h
+++ b/include/configs/am335x_evm.h
@@ -17,6 +17,7 @@ 
 #define __CONFIG_AM335X_EVM_H
 
 #define CONFIG_AM33XX
+#define CONFIG_OMAP
 
 #include <asm/arch/omap.h>
 
diff --git a/include/configs/pcm051.h b/include/configs/pcm051.h
index d0ea74e..5e5fab1 100644
--- a/include/configs/pcm051.h
+++ b/include/configs/pcm051.h
@@ -20,6 +20,7 @@ 
 #define __CONFIG_PCM051_H
 
 #define CONFIG_AM33XX
+#define CONFIG_OMAP
 
 #include <asm/arch/omap.h>
 
diff --git a/include/configs/ti814x_evm.h b/include/configs/ti814x_evm.h
index 16547e3..68a7307 100644
--- a/include/configs/ti814x_evm.h
+++ b/include/configs/ti814x_evm.h
@@ -19,6 +19,7 @@ 
 #define CONFIG_TI81XX
 #define CONFIG_TI814X
 #define CONFIG_SYS_NO_FLASH
+#define CONFIG_OMAP
 
 #include <asm/arch/omap.h>
 
diff --git a/include/spl.h b/include/spl.h
index b40be80..4bc1dd1 100644
--- a/include/spl.h
+++ b/include/spl.h
@@ -44,7 +44,6 @@  struct spl_image_info {
 #define SPL_COPY_PAYLOAD_ONLY	1
 
 extern struct spl_image_info spl_image;
-extern u32 *boot_params_ptr;
 
 /* SPL common functions */
 void preloader_console_init(void);