[U-Boot] [PATCH V11 13/13] OMAP3: twister: add support to boot Linux from SPL

[Stefano Babic]

Signed-off-by: Stefano Babic <sbabic at denx.de>
CC: Tom Rini <tom.rini at gmail.com>
CC: Wolfgang Denk <wd at denx.de>
CC: Simon Schwarz <simonschwarzcor at gmail.com>
---
 board/technexion/twister/twister.c |   23 +++++++++++++++++++++++
 include/configs/twister.h          |   16 ++++++++++++++++
 2 files changed, 39 insertions(+), 0 deletions(-)

diff --git a/board/technexion/twister/twister.c b/board/technexion/twister/twister.c
index 950e76c..fc88301 100644
--- a/board/technexion/twister/twister.c
+++ b/board/technexion/twister/twister.c
@@ -114,3 +114,26 @@ int board_mmc_init(bd_t *bis)
 	return omap_mmc_init(0);
 }
 #endif
+
+#ifdef CONFIG_SPL_OS_BOOT
+/*
+ * Do board specific preperation before SPL
+ * Linux boot
+ */
+void spl_board_prepare_for_linux(void)
+{
+	/* init cs for extern lan */
+	enable_gpmc_cs_config(gpmc_smc911, &gpmc_cfg->cs[5],
+		CONFIG_SMC911X_BASE, GPMC_SIZE_16M);
+}
+int spl_start_uboot(void)
+{
+	int val = 0;
+	if (!gpio_request(CONFIG_SPL_OS_BOOT_KEY, "U-Boot key")) {
+		gpio_direction_input(CONFIG_SPL_OS_BOOT_KEY);
+		val = gpio_get_value(CONFIG_SPL_OS_BOOT_KEY);
+		gpio_free(CONFIG_SPL_OS_BOOT_KEY);
+	}
+	return !val;
+}
+#endif
diff --git a/include/configs/twister.h b/include/configs/twister.h
index 64a886d..68ad31e 100644
--- a/include/configs/twister.h
+++ b/include/configs/twister.h
@@ -51,4 +51,20 @@
 #define	CONFIG_EXTRA_ENV_SETTINGS	CONFIG_TAM3517_SETTINGS \
 	"bootcmd=run nandboot\0"
 
+/* SPL OS boot options */
+#define CONFIG_CMD_SPL
+#define CONFIG_CMD_SPL_WRITE_SIZE	0x400 /* 1024 byte */
+#define CONFIG_SYS_NAND_SPL_KERNEL_OFFS	0x00200000
+#define CONFIG_CMD_SPL_NAND_OFS	(CONFIG_SYS_NAND_SPL_KERNEL_OFFS+\
+						0x600000)
+#define CONFIG_SPL_OS_BOOT
+#define CONFIG_SPL_OS_BOOT_KEY	7
+
+#define CONFIG_SYS_SPL_ARGS_ADDR	(PHYS_SDRAM_1 + 0x100)
+#define CONFIG_SPL_BOARD_INIT
+
+#ifdef CONFIG_SPL_BUILD
+#undef CONFIG_HARD_I2C
+#endif
+
 #endif /* __CONFIG_H */
-- 
1.7.5.4