From 6808ef9ac2a66a261bf341a99c3edb1e69f1cbdd Mon Sep 17 00:00:00 2001 From: Bin Chen Date: Sat, 27 Jan 2018 16:59:09 +1100 Subject: move booti_setup to arch/arm/lig/image.c Follow bootz's pattern by moving the booti_setup to arch/arm/lib. This allows to use booti_setup in other paths, e.g booting an Android image containing Image format. Note that kernel relocation is move out of booti_setup and it is the caller's responsibility to do it and allows them do it differently. say, cmd/booti.c just do a manually, while in the bootm path, we can use bootm_load_os(with some changes). Signed-off-by: Bin Chen Reviewed-by: Tom Rini --- cmd/booti.c | 92 +++++++++---------------------------------------------------- 1 file changed, 13 insertions(+), 79 deletions(-) (limited to 'cmd') diff --git a/cmd/booti.c b/cmd/booti.c index da6fb01c11..0be786cb6b 100644 --- a/cmd/booti.c +++ b/cmd/booti.c @@ -16,77 +16,6 @@ DECLARE_GLOBAL_DATA_PTR; -/* See Documentation/arm64/booting.txt in the Linux kernel */ -struct Image_header { - uint32_t code0; /* Executable code */ - uint32_t code1; /* Executable code */ - uint64_t text_offset; /* Image load offset, LE */ - uint64_t image_size; /* Effective Image size, LE */ - uint64_t flags; /* Kernel flags, LE */ - uint64_t res2; /* reserved */ - uint64_t res3; /* reserved */ - uint64_t res4; /* reserved */ - uint32_t magic; /* Magic number */ - uint32_t res5; -}; - -#define LINUX_ARM64_IMAGE_MAGIC 0x644d5241 - -static int booti_setup(bootm_headers_t *images) -{ - struct Image_header *ih; - uint64_t dst; - uint64_t image_size, text_offset; - - ih = (struct Image_header *)map_sysmem(images->ep, 0); - - if (ih->magic != le32_to_cpu(LINUX_ARM64_IMAGE_MAGIC)) { - puts("Bad Linux ARM64 Image magic!\n"); - return 1; - } - - /* - * Prior to Linux commit a2c1d73b94ed, the text_offset field - * is of unknown endianness. In these cases, the image_size - * field is zero, and we can assume a fixed value of 0x80000. - */ - if (ih->image_size == 0) { - puts("Image lacks image_size field, assuming 16MiB\n"); - image_size = 16 << 20; - text_offset = 0x80000; - } else { - image_size = le64_to_cpu(ih->image_size); - text_offset = le64_to_cpu(ih->text_offset); - } - - /* - * If bit 3 of the flags field is set, the 2MB aligned base of the - * kernel image can be anywhere in physical memory, so respect - * images->ep. Otherwise, relocate the image to the base of RAM - * since memory below it is not accessible via the linear mapping. - */ - if (le64_to_cpu(ih->flags) & BIT(3)) - dst = images->ep - text_offset; - else - dst = gd->bd->bi_dram[0].start; - - dst = ALIGN(dst, SZ_2M) + text_offset; - - unmap_sysmem(ih); - - if (images->ep != dst) { - void *src; - - debug("Moving Image from 0x%lx to 0x%llx\n", images->ep, dst); - - src = (void *)images->ep; - images->ep = dst; - memmove((void *)dst, src, image_size); - } - - return 0; -} - /* * Image booting support */ @@ -94,31 +23,36 @@ static int booti_start(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[], bootm_headers_t *images) { int ret; - struct Image_header *ih; + ulong ld; + ulong relocated_addr; + ulong image_size; ret = do_bootm_states(cmdtp, flag, argc, argv, BOOTM_STATE_START, images, 1); /* Setup Linux kernel Image entry point */ if (!argc) { - images->ep = load_addr; + ld = load_addr; debug("* kernel: default image load address = 0x%08lx\n", load_addr); } else { - images->ep = simple_strtoul(argv[0], NULL, 16); + ld = simple_strtoul(argv[0], NULL, 16); debug("* kernel: cmdline image address = 0x%08lx\n", images->ep); } - ret = booti_setup(images); + ret = booti_setup(ld, &relocated_addr, &image_size); if (ret != 0) return 1; - ih = (struct Image_header *)map_sysmem(images->ep, 0); - - lmb_reserve(&images->lmb, images->ep, le32_to_cpu(ih->image_size)); + /* Handle BOOTM_STATE_LOADOS */ + if (relocated_addr != ld) { + debug("Moving Image from 0x%lx to 0x%lx\n", ld, relocated_addr); + memmove((void *)relocated_addr, (void *)ld, image_size); + } - unmap_sysmem(ih); + images->ep = relocated_addr; + lmb_reserve(&images->lmb, images->ep, le32_to_cpu(image_size)); /* * Handle the BOOTM_STATE_FINDOTHER state ourselves as we do not -- cgit v1.2.3