diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/include/asm/zimage.h | 25 | ||||
| -rw-r--r-- | arch/x86/lib/zimage.c | 23 |
2 files changed, 48 insertions, 0 deletions
diff --git a/arch/x86/include/asm/zimage.h b/arch/x86/include/asm/zimage.h index ac6683ea9ef..8b542605170 100644 --- a/arch/x86/include/asm/zimage.h +++ b/arch/x86/include/asm/zimage.h @@ -134,4 +134,29 @@ struct boot_params *load_zimage(char *image, unsigned long kernel_size, int setup_zimage(struct boot_params *setup_base, char *cmd_line, int auto_boot, ulong initrd_addr, ulong initrd_size, ulong cmdline_force); +/** + * zboot_start() - Prepare to boot a zimage + * + * Record information about a zimage so it can be booted + * + * @bzimage_addr: Address of the bzImage to boot + * @bzimage_size: Size of the bzImage, or 0 to detect this + * @initrd_addr: Address of the initial ramdisk, or 0 if none + * @initrd_size: Size of the initial ramdisk, or 0 if none + * @base_addr: If non-zero, this indicates that the boot parameters have already + * been loaded by the caller to this address, so the load_zimage() call + * in zboot_load() will be skipped when booting + * @cmdline: Environment variable containing the 'override' command line, or + * NULL to use the one in the setup block + */ +void zboot_start(ulong bzimage_addr, ulong bzimage_size, ulong initrd_addr, + ulong initrd_size, ulong base_addr, const char *cmdline); + +/** + * zboot_info() - Show simple info about a zimage + * + * Shows wherer the kernel was loaded and also the setup base + */ +void zboot_info(void); + #endif diff --git a/arch/x86/lib/zimage.c b/arch/x86/lib/zimage.c index e8a1849947e..f2d4f3b5016 100644 --- a/arch/x86/lib/zimage.c +++ b/arch/x86/lib/zimage.c @@ -652,3 +652,26 @@ void zimage_dump(struct boot_params *base_ptr, bool show_cmdline) if (get_boot_protocol(hdr, false) >= 0x215) print_num("Kernel info offset", hdr->kernel_info_offset); } + +void zboot_start(ulong bzimage_addr, ulong bzimage_size, ulong initrd_addr, + ulong initrd_size, ulong base_addr, const char *cmdline) +{ + memset(&state, '\0', sizeof(state)); + + state.bzimage_size = bzimage_size; + state.initrd_addr = initrd_addr; + state.initrd_size = initrd_size; + if (base_addr) { + state.base_ptr = map_sysmem(base_addr, 0); + state.load_address = bzimage_addr; + } else { + state.bzimage_addr = bzimage_addr; + } + state.cmdline = cmdline; +} + +void zboot_info(void) +{ + printf("Kernel loaded at %08lx, setup_base=%p\n", + state.load_address, state.base_ptr); +} |