diff options
| author | Cristian Ciocaltea | 2019-12-24 18:05:39 +0200 |
|---|---|---|
| committer | Heinrich Schuchardt | 2020-01-07 18:08:21 +0100 |
| commit | ecc7fdaa9ef191e023fbc138e3466ccf05f6af20 (patch) | |
| tree | d690160a6e4759958912671f61b37d7e232dad68 /common/bootm_os.c | |
| parent | a031b03f6448fafba46d08f7a88fa33690d50858 (diff) | |
bootm: Add a bootm command for type IH_OS_EFI
Add support for booting EFI binaries contained in FIT images.
A typical usage scenario is chain-loading GRUB2 in a verified
boot environment.
Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@gmail.com>
Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Diffstat (limited to 'common/bootm_os.c')
| -rw-r--r-- | common/bootm_os.c | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/common/bootm_os.c b/common/bootm_os.c index d89ddc32b0d..1d58462509c 100644 --- a/common/bootm_os.c +++ b/common/bootm_os.c @@ -7,10 +7,12 @@ #include <common.h> #include <bootm.h> #include <cpu_func.h> +#include <efi_loader.h> #include <env.h> #include <fdt_support.h> #include <linux/libfdt.h> #include <malloc.h> +#include <mapmem.h> #include <vxworks.h> #include <tee/optee.h> @@ -498,6 +500,57 @@ static int do_bootm_tee(int flag, int argc, char * const argv[], } #endif +#ifdef CONFIG_BOOTM_EFI +static int do_bootm_efi(int flag, int argc, char * const argv[], + bootm_headers_t *images) +{ + int ret; + efi_status_t efi_ret; + void *image_buf; + + if (flag != BOOTM_STATE_OS_GO) + return 0; + + /* Locate FDT, if provided */ + ret = bootm_find_images(flag, argc, argv); + if (ret) + return ret; + + /* Initialize EFI drivers */ + efi_ret = efi_init_obj_list(); + if (efi_ret != EFI_SUCCESS) { + printf("## Failed to initialize UEFI sub-system: r = %lu\n", + efi_ret & ~EFI_ERROR_MASK); + return 1; + } + + /* Install device tree */ + efi_ret = efi_install_fdt(images->ft_len + ? images->ft_addr : EFI_FDT_USE_INTERNAL); + if (efi_ret != EFI_SUCCESS) { + printf("## Failed to install device tree: r = %lu\n", + efi_ret & ~EFI_ERROR_MASK); + return 1; + } + + /* Run EFI image */ + printf("## Transferring control to EFI (at address %08lx) ...\n", + images->ep); + bootstage_mark(BOOTSTAGE_ID_RUN_OS); + + image_buf = map_sysmem(images->ep, images->os.image_len); + + efi_ret = efi_run_image(image_buf, images->os.image_len); + if (efi_ret != EFI_SUCCESS) { + printf("## Failed to run EFI image: r = %lu\n", + efi_ret & ~EFI_ERROR_MASK); + return 1; + } + + return 0; +} +#endif + static boot_os_fn *boot_os[] = { [IH_OS_U_BOOT] = do_bootm_standalone, #ifdef CONFIG_BOOTM_LINUX @@ -534,6 +587,9 @@ static boot_os_fn *boot_os[] = { #ifdef CONFIG_BOOTM_OPTEE [IH_OS_TEE] = do_bootm_tee, #endif +#ifdef CONFIG_BOOTM_EFI + [IH_OS_EFI] = do_bootm_efi, +#endif }; /* Allow for arch specific config before we boot */ |