[U-Boot] [PATCH v4 17/20] ARM: SPL: Convert davinci to CONFIG_SPL_FRAMEWORK

Tom Rini trini at ti.com
Sat Aug 25 01:58:31 CEST 2012


- Convert the non-relocation part of board_init_f to spl_board_init,
  turn on CONFIG_SPL_BOARD_INIT in the configs.
- Remove duplicated code.
- Add spl_boot_device() that returns the statically chosen boot device.

Signed-off-by: Tom Rini <trini at ti.com>
---
Changes in v2:
- Add CONFIG_SYS_SPL_MALLOC_START / SIZE defines from Christian Riesch
- Add arch/arm/cpu/arm926ejs/davinci/config.mk to build u-boot.ais

Changes in v3:
  CONFIG_SPL_FRAMEWORK
  perform early init.  Fixes the cannot reset problem.
- Make u-boot.ais use u-boot.img not u-boot.bin, now that it uses
- Make use of board_init_f being a weak function now so that we can

Changes in v4:
- Adapt davinci to new board_init_f requirements

 Makefile                                 |    4 +-
 arch/arm/cpu/arm926ejs/davinci/Makefile  |    2 +-
 arch/arm/cpu/arm926ejs/davinci/config.mk |   16 ++++++++
 arch/arm/cpu/arm926ejs/davinci/spl.c     |   60 ++++++++++++++----------------
 arch/arm/cpu/arm926ejs/start.S           |   20 +---------
 arch/arm/include/asm/arch-davinci/spl.h  |   28 ++++++++++++++
 include/configs/cam_enc_4xx.h            |    2 +
 include/configs/da850evm.h               |    5 +++
 include/configs/hawkboard.h              |    2 +
 9 files changed, 85 insertions(+), 54 deletions(-)
 create mode 100644 arch/arm/cpu/arm926ejs/davinci/config.mk
 create mode 100644 arch/arm/include/asm/arch-davinci/spl.h

diff --git a/Makefile b/Makefile
index 57bb0b9..8738d55 100644
--- a/Makefile
+++ b/Makefile
@@ -441,7 +441,7 @@ $(obj)u-boot.ubl:       $(obj)spl/u-boot-spl.bin $(obj)u-boot.bin
 		rm $(obj)u-boot-ubl.bin
 		rm $(obj)spl/u-boot-spl-pad.bin
 
-$(obj)u-boot.ais:       $(obj)spl/u-boot-spl.bin $(obj)u-boot.bin
+$(obj)u-boot.ais:       $(obj)spl/u-boot-spl.bin $(obj)u-boot.img
 		$(obj)tools/mkimage -s -n /dev/null -T aisimage \
 			-e $(CONFIG_SPL_TEXT_BASE) \
 			-d $(obj)spl/u-boot-spl.bin \
@@ -449,7 +449,7 @@ $(obj)u-boot.ais:       $(obj)spl/u-boot-spl.bin $(obj)u-boot.bin
 		$(OBJCOPY) ${OBJCFLAGS} -I binary \
 			--pad-to=$(CONFIG_SPL_MAX_SIZE) -O binary \
 			$(obj)spl/u-boot-spl.ais $(obj)spl/u-boot-spl-pad.ais
-		cat $(obj)spl/u-boot-spl-pad.ais $(obj)u-boot.bin > \
+		cat $(obj)spl/u-boot-spl-pad.ais $(obj)u-boot.img > \
 			$(obj)u-boot.ais
 		rm $(obj)spl/u-boot-spl{,-pad}.ais
 
diff --git a/arch/arm/cpu/arm926ejs/davinci/Makefile b/arch/arm/cpu/arm926ejs/davinci/Makefile
index da7efac..e547920 100644
--- a/arch/arm/cpu/arm926ejs/davinci/Makefile
+++ b/arch/arm/cpu/arm926ejs/davinci/Makefile
@@ -37,7 +37,7 @@ COBJS-$(CONFIG_SOC_DA850)	+= da850_pinmux.o
 COBJS-$(CONFIG_DRIVER_TI_EMAC)	+= lxt972.o dp83848.o et1011c.o ksz8873.o
 
 ifdef CONFIG_SPL_BUILD
-COBJS-y	+= spl.o
+COBJS-$(CONFIG_SPL_FRAMEWORK)	+= spl.o
 COBJS-$(CONFIG_SOC_DM365)	+= dm365_lowlevel.o
 COBJS-$(CONFIG_SOC_DA8XX)	+= da850_lowlevel.o
 endif
diff --git a/arch/arm/cpu/arm926ejs/davinci/config.mk b/arch/arm/cpu/arm926ejs/davinci/config.mk
new file mode 100644
index 0000000..7452315
--- /dev/null
+++ b/arch/arm/cpu/arm926ejs/davinci/config.mk
@@ -0,0 +1,16 @@
+#
+# Copyright (C) 2012, Texas Instruments, Incorporated - http://www.ti.com/
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation; either version 2 of
+# the License, or (at your option) any later version.
+#
+# This program is distributed "as is" WITHOUT ANY WARRANTY of any
+# kind, whether express or implied; without even the implied warranty
+# of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+ifndef CONFIG_SPL_BUILD
+ALL-$(CONFIG_SPL_FRAMEWORK)	+= $(obj)u-boot.ais
+endif
diff --git a/arch/arm/cpu/arm926ejs/davinci/spl.c b/arch/arm/cpu/arm926ejs/davinci/spl.c
index 74632e5..8a6855e 100644
--- a/arch/arm/cpu/arm926ejs/davinci/spl.c
+++ b/arch/arm/cpu/arm926ejs/davinci/spl.c
@@ -21,6 +21,8 @@
  * MA 02111-1307 USA
  */
 #include <common.h>
+#include <config.h>
+#include <spl.h>
 #include <asm/u-boot.h>
 #include <asm/utils.h>
 #include <nand.h>
@@ -29,15 +31,9 @@
 #include <malloc.h>
 #include <spi_flash.h>
 
-#ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
-
 DECLARE_GLOBAL_DATA_PTR;
-/* Define global data structure pointer to it*/
-static gd_t gdata __attribute__ ((section(".data")));
-static bd_t bdata __attribute__ ((section(".data")));
-
-#else
 
+#ifndef CONFIG_SPL_LIBCOMMON_SUPPORT
 void puts(const char *str)
 {
 	while (*str)
@@ -51,46 +47,44 @@ void putc(char c)
 
 	NS16550_putc((NS16550_t)(CONFIG_SYS_NS16550_COM1), c);
 }
-
 #endif /* CONFIG_SPL_LIBCOMMON_SUPPORT */
 
-inline void hang(void)
-{
-	puts("### ERROR ### Please RESET the board ###\n");
-	for (;;)
-		;
-}
+extern char __bss_start[], __bss_end__[];
 
 void board_init_f(ulong dummy)
 {
+	/* First, setup our stack pointer. */
+	asm volatile("mov sp, %0\n" : : "r"(CONFIG_SPL_STACK));
+
+	/* Second, perform our low-level init. */
 #ifdef CONFIG_SOC_DM365
 	dm36x_lowlevel_init(0);
 #endif
 #ifdef CONFIG_SOC_DA8XX
 	arch_cpu_init();
 #endif
-	relocate_code(CONFIG_SPL_STACK, NULL, CONFIG_SPL_TEXT_BASE);
-}
 
-void board_init_r(gd_t *id, ulong dummy)
-{
-#ifdef CONFIG_SPL_NAND_LOAD
-	nand_init();
-	puts("Nand boot...\n");
-	nand_boot();
-#endif
-#ifdef CONFIG_SPL_SPI_LOAD
-	mem_malloc_init(CONFIG_SYS_TEXT_BASE - CONFIG_SYS_MALLOC_LEN,
-			CONFIG_SYS_MALLOC_LEN);
+	/* Third, we clear the BSS. */
+	memset(__bss_start, 0, __bss_end__ - __bss_start);
 
+	/* Finally, setup gd and move to the next step. */
 	gd = &gdata;
-	gd->bd = &bdata;
-	gd->flags |= GD_FLG_RELOC;
-	gd->baudrate = CONFIG_BAUDRATE;
-	serial_init();          /* serial communications setup */
-	gd->have_console = 1;
+	board_init_r(NULL, 0);
+}
 
-	puts("SPI boot...\n");
-	spi_boot();
+void spl_board_init(void)
+{
+	preloader_console_init();
+}
+
+u32 spl_boot_device(void)
+{
+#ifdef CONFIG_SPL_NAND_LOAD
+	return BOOT_DEVICE_NAND;
+#elif defined(CONFIG_SPL_SPI_LOAD)
+	return BOOT_DEVICE_SPI;
+#else
+	puts("Unknown boot device\n");
+	hang();
 #endif
 }
diff --git a/arch/arm/cpu/arm926ejs/start.S b/arch/arm/cpu/arm926ejs/start.S
index 6f05f1a..7889d13 100644
--- a/arch/arm/cpu/arm926ejs/start.S
+++ b/arch/arm/cpu/arm926ejs/start.S
@@ -215,6 +215,7 @@ call_board_init_f:
 
 /*------------------------------------------------------------------------------*/
 
+#ifndef CONFIG_SPL_BUILD
 /*
  * void relocate_code (addr_sp, gd, addr_moni)
  *
@@ -246,7 +247,6 @@ copy_loop:
 	cmp	r0, r2			/* until source end address [r2]    */
 	blo	copy_loop
 
-#ifndef CONFIG_SPL_BUILD
 	/*
 	 * fix .rel.dyn relocations
 	 */
@@ -285,20 +285,13 @@ fixnext:
 	add	r2, r2, #8		/* each rel.dyn entry is 8 bytes */
 	cmp	r2, r3
 	blo	fixloop
-#endif
 
 clear_bss:
-#ifdef CONFIG_SPL_BUILD
-	/* No relocation for SPL */
-	ldr	r0, =__bss_start
-	ldr	r1, =__bss_end__
-#else
 	ldr	r0, _bss_start_ofs
 	ldr	r1, _bss_end_ofs
 	mov	r4, r6			/* reloc addr */
 	add	r0, r0, r4
 	add	r1, r1, r4
-#endif
 	mov	r2, #0x00000000		/* clear			    */
 
 clbss_l:cmp	r0, r1			/* clear loop... */
@@ -308,22 +301,13 @@ clbss_l:cmp	r0, r1			/* clear loop... */
 	b	clbss_l
 clbss_e:
 
-#ifndef CONFIG_SPL_BUILD
 	bl coloured_LED_init
 	bl red_led_on
-#endif
 
 /*
  * We are done. Do not return, instead branch to second part of board
  * initialization, now running from RAM.
  */
-#ifdef CONFIG_NAND_SPL
-	ldr     r0, _nand_boot_ofs
-	mov	pc, r0
-
-_nand_boot_ofs:
-	.word nand_boot
-#else
 	ldr	r0, _board_init_r_ofs
 	ldr	r1, _TEXT_BASE
 	add	lr, r0, r1
@@ -336,7 +320,6 @@ _nand_boot_ofs:
 
 _board_init_r_ofs:
 	.word board_init_r - _start
-#endif
 
 _rel_dyn_start_ofs:
 	.word __rel_dyn_start - _start
@@ -344,6 +327,7 @@ _rel_dyn_end_ofs:
 	.word __rel_dyn_end - _start
 _dynsym_start_ofs:
 	.word __dynsym_start - _start
+#endif
 
 /*
  *************************************************************************
diff --git a/arch/arm/include/asm/arch-davinci/spl.h b/arch/arm/include/asm/arch-davinci/spl.h
new file mode 100644
index 0000000..f9c5131
--- /dev/null
+++ b/arch/arm/include/asm/arch-davinci/spl.h
@@ -0,0 +1,28 @@
+/*
+ * (C) Copyright 2012
+ * Texas Instruments, <www.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	_ASM_ARCH_SPL_H_
+#define	_ASM_SPL_H_
+
+#define BOOT_DEVICE_NAND	1
+#define BOOT_DEVICE_SPI		2
+#endif
diff --git a/include/configs/cam_enc_4xx.h b/include/configs/cam_enc_4xx.h
index 771ac9c..fe28278 100644
--- a/include/configs/cam_enc_4xx.h
+++ b/include/configs/cam_enc_4xx.h
@@ -217,6 +217,8 @@
 
 /* Defines for SPL */
 #define CONFIG_SPL
+#define CONFIG_SPL_FRAMEWORK
+#define CONFIG_SPL_BOARD_INIT
 #define CONFIG_SPL_LIBGENERIC_SUPPORT
 #define CONFIG_SPL_NAND_SUPPORT
 #define CONFIG_SPL_NAND_SIMPLE
diff --git a/include/configs/da850evm.h b/include/configs/da850evm.h
index e6adb1f..290ded1 100644
--- a/include/configs/da850evm.h
+++ b/include/configs/da850evm.h
@@ -313,6 +313,11 @@
 
 /* defines for SPL */
 #define CONFIG_SPL
+#define CONFIG_SPL_FRAMEWORK
+#define CONFIG_SPL_BOARD_INIT
+#define CONFIG_SYS_SPL_MALLOC_START	(CONFIG_SYS_TEXT_BASE - \
+						CONFIG_SYS_MALLOC_LEN)
+#define CONFIG_SYS_SPL_MALLOC_SIZE	CONFIG_SYS_MALLOC_LEN
 #define CONFIG_SPL_SPI_SUPPORT
 #define CONFIG_SPL_SPI_FLASH_SUPPORT
 #define CONFIG_SPL_SPI_LOAD
diff --git a/include/configs/hawkboard.h b/include/configs/hawkboard.h
index c6e9ce5..838e572 100644
--- a/include/configs/hawkboard.h
+++ b/include/configs/hawkboard.h
@@ -59,6 +59,8 @@
 
 /* Spl */
 #define CONFIG_SPL
+#define CONFIG_SPL_FRAMEWORK
+#define CONFIG_SPL_BOARD_INIT
 #define CONFIG_SPL_NAND_SUPPORT
 #define CONFIG_SPL_NAND_SIMPLE
 #define CONFIG_SPL_NAND_LOAD
-- 
1.7.9.5



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