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author | Sascha Hauer <s.hauer@pengutronix.de> | 2011-04-08 15:43:48 +0200 |
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committer | Sascha Hauer <s.hauer@pengutronix.de> | 2011-04-12 09:54:57 +0200 |
commit | 1cf3936829da523a03f3a7bf907eea1fda06aab4 (patch) | |
tree | 94bcfa4f1fe435eb6c52ed891153dc2c733e8fb4 | |
parent | 00650621241ab8666e6ec238d5c8c8ca19d7b27b (diff) | |
download | barebox-1cf3936829da523a03f3a7bf907eea1fda06aab4.tar.gz barebox-1cf3936829da523a03f3a7bf907eea1fda06aab4.tar.xz |
ARM omap: add xload helper functions
Add some common xload helper functions to determine the boot source
on omap3/4 and to load images from mmc and nand.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
-rw-r--r-- | arch/arm/mach-omap/Makefile | 2 | ||||
-rw-r--r-- | arch/arm/mach-omap/include/mach/xload.h | 16 | ||||
-rw-r--r-- | arch/arm/mach-omap/omap3_generic.c | 14 | ||||
-rw-r--r-- | arch/arm/mach-omap/omap4_generic.c | 14 | ||||
-rw-r--r-- | arch/arm/mach-omap/xload.c | 54 |
5 files changed, 99 insertions, 1 deletions
diff --git a/arch/arm/mach-omap/Makefile b/arch/arm/mach-omap/Makefile index 9c3145693e..a4b9a55774 100644 --- a/arch/arm/mach-omap/Makefile +++ b/arch/arm/mach-omap/Makefile @@ -25,4 +25,4 @@ obj-$(CONFIG_ARCH_OMAP3) += omap3_core.o omap3_generic.o obj-$(CONFIG_ARCH_OMAP4) += omap4_generic.o omap4_clock.o obj-$(CONFIG_OMAP3_CLOCK_CONFIG) += omap3_clock_core.o omap3_clock.o obj-$(CONFIG_OMAP_GPMC) += gpmc.o devices-gpmc-nand.o -obj-y += omap-uart.o gpio.o +obj-y += omap-uart.o gpio.o xload.o diff --git a/arch/arm/mach-omap/include/mach/xload.h b/arch/arm/mach-omap/include/mach/xload.h new file mode 100644 index 0000000000..844b57f0e5 --- /dev/null +++ b/arch/arm/mach-omap/include/mach/xload.h @@ -0,0 +1,16 @@ +#ifndef _MACH_XLOAD_H +#define _MACH_XLOAD_H + +void *omap_xload_boot_nand(int offset, int size); +void *omap_xload_boot_mmc(void); + +enum omap_boot_src { + OMAP_BOOTSRC_UNKNOWN, + OMAP_BOOTSRC_MMC1, + OMAP_BOOTSRC_NAND, +}; + +enum omap_boot_src omap3_bootsrc(void); +enum omap_boot_src omap4_bootsrc(void); + +#endif /* _MACH_XLOAD_H */ diff --git a/arch/arm/mach-omap/omap3_generic.c b/arch/arm/mach-omap/omap3_generic.c index c1940d266c..661a971fc0 100644 --- a/arch/arm/mach-omap/omap3_generic.c +++ b/arch/arm/mach-omap/omap3_generic.c @@ -46,6 +46,7 @@ #include <mach/wdt.h> #include <mach/sys_info.h> #include <mach/syslib.h> +#include <mach/xload.h> /** * @brief Reset the CPU @@ -483,3 +484,16 @@ void a_init(void) #endif } + +#define OMAP3_TRACING_VECTOR1 0x4020ffb4 + +enum omap_boot_src omap3_bootsrc(void) +{ + u32 bootsrc = readl(OMAP3_TRACING_VECTOR1); + + if (bootsrc & (1 << 2)) + return OMAP_BOOTSRC_NAND; + if (bootsrc & (1 << 6)) + return OMAP_BOOTSRC_MMC1; + return OMAP_BOOTSRC_UNKNOWN; +} diff --git a/arch/arm/mach-omap/omap4_generic.c b/arch/arm/mach-omap/omap4_generic.c index 45e6c8664e..e4838e9618 100644 --- a/arch/arm/mach-omap/omap4_generic.c +++ b/arch/arm/mach-omap/omap4_generic.c @@ -5,6 +5,7 @@ #include <mach/omap4-silicon.h> #include <mach/omap4-clock.h> #include <mach/syslib.h> +#include <mach/xload.h> void __noreturn reset_cpu(unsigned long addr) { @@ -404,3 +405,16 @@ static int omap_vector_init(void) return 0; } core_initcall(omap_vector_init); + +#define OMAP4_TRACING_VECTOR3 0x4030d048 + +enum omap_boot_src omap4_bootsrc(void) +{ + u32 bootsrc = readl(OMAP4_TRACING_VECTOR3); + + if (bootsrc & (1 << 3)) + return OMAP_BOOTSRC_NAND; + if (bootsrc & (1 << 5)) + return OMAP_BOOTSRC_MMC1; + return OMAP_BOOTSRC_UNKNOWN; +} diff --git a/arch/arm/mach-omap/xload.c b/arch/arm/mach-omap/xload.c new file mode 100644 index 0000000000..216b9b5aba --- /dev/null +++ b/arch/arm/mach-omap/xload.c @@ -0,0 +1,54 @@ +#include <common.h> +#include <partition.h> +#include <nand.h> +#include <driver.h> +#include <linux/mtd/mtd.h> +#include <fs.h> +#include <fcntl.h> +#include <mach/xload.h> +#include <sizes.h> + +void *omap_xload_boot_nand(int offset, int size) +{ + int ret; + void *to = xmalloc(size); + struct cdev *cdev; + + devfs_add_partition("nand0", offset, size, PARTITION_FIXED, "x"); + dev_add_bb_dev("x", "bbx"); + + cdev = cdev_open("bbx", O_RDONLY); + if (!cdev) { + printf("failed to open nand\n"); + return NULL; + } + + ret = cdev_read(cdev, to, size, 0, 0); + if (ret != size) { + printf("failed to read from nand\n"); + return NULL; + } + + return to; +} + +void *omap_xload_boot_mmc(void) +{ + int ret; + void *buf; + int len; + + ret = mount("disk0.0", "fat", "/"); + if (ret) { + printf("mounting sd card failed with %d\n", ret); + return NULL; + } + + buf = read_file("/barebox.bin", &len); + if (!buf) { + printf("could not read barebox.bin from sd card\n"); + return NULL; + } + + return buf; +} |