diff options
author | Sascha Hauer <s.hauer@pengutronix.de> | 2011-04-01 14:15:54 +0200 |
---|---|---|
committer | Sascha Hauer <s.hauer@pengutronix.de> | 2011-04-04 16:27:25 +0200 |
commit | 4ade5f86705c93fd5b9512658aff014ee0ee5121 (patch) | |
tree | 8b29e7593104d8fe99e6343ba55dac850b9b49a3 /arch/arm | |
parent | cf76694df6985800b5235ff4f1101e4783e83d9d (diff) | |
download | barebox-4ade5f86705c93fd5b9512658aff014ee0ee5121.tar.gz barebox-4ade5f86705c93fd5b9512658aff014ee0ee5121.tar.xz |
ARM: factor out a start_linux function
This can be shared between the different boot commands.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'arch/arm')
-rw-r--r-- | arch/arm/Kconfig | 5 | ||||
-rw-r--r-- | arch/arm/include/asm/armlinux.h | 4 | ||||
-rw-r--r-- | arch/arm/lib/Makefile | 2 | ||||
-rw-r--r-- | arch/arm/lib/armlinux.c | 39 |
4 files changed, 30 insertions, 20 deletions
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index aae0e992c8..4392620419 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -21,6 +21,11 @@ config ARM config ARM_AMBA bool +config ARM_LINUX + bool + default y + depends on CMD_BOOTZ || CMD_BOOTU || CMD_BOOTM + menu "System Type" choice diff --git a/arch/arm/include/asm/armlinux.h b/arch/arm/include/asm/armlinux.h index 0d9d4e9fa2..3cab209d60 100644 --- a/arch/arm/include/asm/armlinux.h +++ b/arch/arm/include/asm/armlinux.h @@ -30,4 +30,8 @@ static inline void armlinux_set_serial(u64 serial) } #endif +struct image_data; + +void start_linux(void *adr, int swap, struct image_data *data); + #endif /* __ARCH_ARMLINUX_H */ diff --git a/arch/arm/lib/Makefile b/arch/arm/lib/Makefile index 3a010838b7..899c391be0 100644 --- a/arch/arm/lib/Makefile +++ b/arch/arm/lib/Makefile @@ -1,4 +1,4 @@ -obj-y += armlinux.o +obj-$(CONFIG_ARM_LINUX) += armlinux.o obj-y += div0.o obj-y += findbit.o obj-y += arm.o diff --git a/arch/arm/lib/armlinux.c b/arch/arm/lib/armlinux.c index 9927b766d9..15b92f9156 100644 --- a/arch/arm/lib/armlinux.c +++ b/arch/arm/lib/armlinux.c @@ -215,6 +215,23 @@ void armlinux_set_serial(u64 serial) system_serial = serial; } +void start_linux(void *adr, int swap, struct image_data *data) +{ + void (*kernel)(int zero, int arch, void *params) = adr; + + setup_tags(data, swap); + + shutdown_barebox(); + if (swap) { + u32 reg; + __asm__ __volatile__("mrc p15, 0, %0, c1, c0" : "=r" (reg)); + reg ^= CR_B; /* swap big-endian flag */ + __asm__ __volatile__("mcr p15, 0, %0, c1, c0" :: "r" (reg)); + } + + kernel(0, armlinux_architecture, armlinux_bootparams); +} + #ifdef CONFIG_CMD_BOOTM static int do_bootm_linux(struct image_data *data) { @@ -241,8 +258,6 @@ static int do_bootm_linux(struct image_data *data) debug("## Transferring control to Linux (at address 0x%p) ...\n", theKernel); - setup_tags(data, 0); - if (relocate_image(data->os, (void *)image_get_load(os_header))) return -1; @@ -253,8 +268,7 @@ static int do_bootm_linux(struct image_data *data) /* we assume that the kernel is in place */ printf("\nStarting kernel %s...\n\n", data->initrd ? "with initrd " : ""); - shutdown_barebox(); - theKernel (0, armlinux_architecture, armlinux_bootparams); + start_linux(theKernel, 0, data); return -1; } @@ -370,17 +384,7 @@ static int do_bootz(struct command *cmdtp, int argc, char *argv[]) printf("loaded zImage from %s with size %d\n", argv[1], end); - setup_tags(NULL, swap); - - shutdown_barebox(); - if (swap) { - u32 reg; - __asm__ __volatile__("mrc p15, 0, %0, c1, c0" : "=r" (reg)); - reg ^= CR_B; /* swap big-endian flag */ - __asm__ __volatile__("mcr p15, 0, %0, c1, c0" :: "r" (reg)); - } - - theKernel(0, armlinux_architecture, armlinux_bootparams); + start_linux(theKernel, swap, NULL); return 0; @@ -421,10 +425,7 @@ static int do_bootu(struct command *cmdtp, int argc, char *argv[]) if (!theKernel) theKernel = (void *)simple_strtoul(argv[1], NULL, 0); - setup_tags(NULL, 0); - - shutdown_barebox(); - theKernel(0, armlinux_architecture, armlinux_bootparams); + start_linux(theKernel, 0, NULL); return 1; } |