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author | Ahmad Fatoum <a.fatoum@pengutronix.de> | 2019-09-17 13:55:13 +0200 |
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committer | Sascha Hauer <s.hauer@pengutronix.de> | 2019-09-18 14:40:07 +0200 |
commit | e74e0e10c6d9fea688792196b0d3805fd56027e9 (patch) | |
tree | 7d15d940e687e44fc6a31993b36f203541e639c0 /arch/arm/mach-layerscape | |
parent | 8f9eb7a518113f0c5eb6eb5e4e81c19548cf5508 (diff) | |
download | barebox-e74e0e10c6d9fea688792196b0d3805fd56027e9.tar.gz barebox-e74e0e10c6d9fea688792196b0d3805fd56027e9.tar.xz |
ARM: Layerscape: add bootm handler for images
The layerscape images are preceeded by a RCW and PBI, which are interpreted
by the Layerscape Hardware Pre-Bootloader and aren't executable as ARM code.
To maintain the ability to network boot them, add a bootm handler that
skips the fixed-size header.
Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'arch/arm/mach-layerscape')
-rw-r--r-- | arch/arm/mach-layerscape/Makefile | 1 | ||||
-rw-r--r-- | arch/arm/mach-layerscape/pblimage.c | 58 |
2 files changed, 59 insertions, 0 deletions
diff --git a/arch/arm/mach-layerscape/Makefile b/arch/arm/mach-layerscape/Makefile index 8a814f9441..854a327c91 100644 --- a/arch/arm/mach-layerscape/Makefile +++ b/arch/arm/mach-layerscape/Makefile @@ -5,3 +5,4 @@ obj-y += icid.o obj-pbl-y += boot.o pbl-y += xload-qspi.o xload.o obj-$(CONFIG_ARCH_LAYERSCAPE_PPA) += ppa.o ppa-entry.o +obj-$(CONFIG_BOOTM) += pblimage.o diff --git a/arch/arm/mach-layerscape/pblimage.c b/arch/arm/mach-layerscape/pblimage.c new file mode 100644 index 0000000000..deaf7143b9 --- /dev/null +++ b/arch/arm/mach-layerscape/pblimage.c @@ -0,0 +1,58 @@ +#define pr_fmt(fmt) "pblimage: " fmt + +#include <bootm.h> +#include <common.h> +#include <init.h> +#include <memory.h> +#include <linux/sizes.h> + +#define BAREBOX_STAGE2_OFFSET SZ_128K + +static int do_bootm_layerscape_pblimage(struct image_data *data) +{ + void (*barebox)(unsigned long x0, unsigned long x1, unsigned long x2, + unsigned long x3); + resource_size_t start, end; + int ret; + + ret = memory_bank_first_find_space(&start, &end); + if (ret) + return ret; + + ret = bootm_load_os(data, start); + if (ret) + return ret; + + barebox = (void*)start + BAREBOX_STAGE2_OFFSET; + + if (data->verbose) + printf("Loaded barebox image to 0x%08lx\n", + (unsigned long)barebox); + + shutdown_barebox(); + + barebox(0, 0, 0, 0); + + return -EIO; +} + +static struct image_handler image_handler_layerscape_pbl_image = { + .name = "Layerscape image", + .bootm = do_bootm_layerscape_pblimage, + .filetype = filetype_layerscape_image, +}; + +static struct image_handler image_handler_layerscape_qspi_pbl_image = { + .name = "Layerscape QSPI image", + .bootm = do_bootm_layerscape_pblimage, + .filetype = filetype_layerscape_qspi_image, +}; + +static int layerscape_register_pbl_image_handler(void) +{ + register_image_handler(&image_handler_layerscape_pbl_image); + register_image_handler(&image_handler_layerscape_qspi_pbl_image); + + return 0; +} +late_initcall(layerscape_register_pbl_image_handler); |