[PATCH 06/10] omap: add SPI as a boot mode for xload
Jan Luebbe
jlu at pengutronix.de
Mon Sep 3 07:46:01 EDT 2012
Signed-off-by: Jan Luebbe <jlu at pengutronix.de>
---
arch/arm/mach-omap/include/mach/xload.h | 1 +
arch/arm/mach-omap/xload.c | 27 +++++++++++++++++++++++++++
2 files changed, 28 insertions(+)
diff --git a/arch/arm/mach-omap/include/mach/xload.h b/arch/arm/mach-omap/include/mach/xload.h
index 844b57f..c62912a 100644
--- a/arch/arm/mach-omap/include/mach/xload.h
+++ b/arch/arm/mach-omap/include/mach/xload.h
@@ -8,6 +8,7 @@ enum omap_boot_src {
OMAP_BOOTSRC_UNKNOWN,
OMAP_BOOTSRC_MMC1,
OMAP_BOOTSRC_NAND,
+ OMAP_BOOTSRC_SPI1,
};
enum omap_boot_src omap3_bootsrc(void);
diff --git a/arch/arm/mach-omap/xload.c b/arch/arm/mach-omap/xload.c
index 13024ab..1daa827 100644
--- a/arch/arm/mach-omap/xload.c
+++ b/arch/arm/mach-omap/xload.c
@@ -54,6 +54,29 @@ void *omap_xload_boot_mmc(void)
return buf;
}
+void *omap_xload_boot_spi(int offset, int size)
+{
+ int ret;
+ void *to = xmalloc(size);
+ struct cdev *cdev;
+
+ devfs_add_partition("m25p0", offset, size, DEVFS_PARTITION_FIXED, "x");
+
+ cdev = cdev_open("x", O_RDONLY);
+ if (!cdev) {
+ printf("failed to open spi flash\n");
+ return NULL;
+ }
+
+ ret = cdev_read(cdev, to, size, 0, 0);
+ if (ret != size) {
+ printf("failed to read from spi flash\n");
+ return NULL;
+ }
+
+ return to;
+}
+
enum omap_boot_src omap_bootsrc(void)
{
#if defined(CONFIG_ARCH_OMAP3)
@@ -82,6 +105,10 @@ int run_shell(void)
printf("booting from NAND\n");
func = omap_xload_boot_nand(SZ_128K, SZ_256K);
break;
+ case OMAP_BOOTSRC_SPI1:
+ printf("booting from SPI1\n");
+ func = omap_xload_boot_spi(SZ_128K, SZ_512K);
+ break;
}
if (!func) {
--
1.7.10.4
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