From 5db28905c952560843212236963e9f711341cad5 Mon Sep 17 00:00:00 2001 From: Tom Rini Date: Fri, 12 Aug 2016 08:31:15 -0400 Subject: cmd: Split 'bootz' and 'booti' out from 'bootm' The bootz and booti commands rely on common functionality that is found in common/bootm.c and common/bootm_os.c. They do not however rely on the rest of cmd/bootm.c to be implemented so split them into their own files. Have various Makefiles include the required infrastructure for CONFIG_CMD_BOOT[IZ] as well as CONFIG_CMD_BOOTM. Move the declaration of 'images' over to common/bootm.c. Cc: Masahiro Yamada Signed-off-by: Tom Rini --- cmd/booti.c | 161 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 161 insertions(+) create mode 100644 cmd/booti.c (limited to 'cmd/booti.c') diff --git a/cmd/booti.c b/cmd/booti.c new file mode 100644 index 00000000000..6c1c998a568 --- /dev/null +++ b/cmd/booti.c @@ -0,0 +1,161 @@ +/* + * (C) Copyright 2000-2009 + * Wolfgang Denk, DENX Software Engineering, wd@denx.de. + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include +#include +#include +#include +#include +#include + +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 res1; /* reserved */ + 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; + + 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; + } + + if (ih->image_size == 0) { + puts("Image lacks image_size field, assuming 16MiB\n"); + image_size = 16 << 20; + } else { + image_size = le64_to_cpu(ih->image_size); + } + + /* + * If we are not at the correct run-time location, set the new + * correct location and then move the image there. + */ + dst = gd->bd->bi_dram[0].start + le64_to_cpu(ih->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 + */ +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; + + 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; + debug("* kernel: default image load address = 0x%08lx\n", + load_addr); + } else { + images->ep = simple_strtoul(argv[0], NULL, 16); + debug("* kernel: cmdline image address = 0x%08lx\n", + images->ep); + } + + ret = booti_setup(images); + 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)); + + unmap_sysmem(ih); + + /* + * Handle the BOOTM_STATE_FINDOTHER state ourselves as we do not + * have a header that provide this informaiton. + */ + if (bootm_find_images(flag, argc, argv)) + return 1; + + return 0; +} + +int do_booti(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) +{ + int ret; + + /* Consume 'booti' */ + argc--; argv++; + + if (booti_start(cmdtp, flag, argc, argv, &images)) + return 1; + + /* + * We are doing the BOOTM_STATE_LOADOS state ourselves, so must + * disable interrupts ourselves + */ + bootm_disable_interrupts(); + + images.os.os = IH_OS_LINUX; + ret = do_bootm_states(cmdtp, flag, argc, argv, + BOOTM_STATE_OS_PREP | BOOTM_STATE_OS_FAKE_GO | + BOOTM_STATE_OS_GO, + &images, 1); + + return ret; +} + +#ifdef CONFIG_SYS_LONGHELP +static char booti_help_text[] = + "[addr [initrd[:size]] [fdt]]\n" + " - boot arm64 Linux Image stored in memory\n" + "\tThe argument 'initrd' is optional and specifies the address\n" + "\tof an initrd in memory. The optional parameter ':size' allows\n" + "\tspecifying the size of a RAW initrd.\n" +#if defined(CONFIG_OF_LIBFDT) + "\tSince booting a Linux kernel requires a flat device-tree, a\n" + "\tthird argument providing the address of the device-tree blob\n" + "\tis required. To boot a kernel with a device-tree blob but\n" + "\twithout an initrd image, use a '-' for the initrd argument.\n" +#endif + ""; +#endif + +U_BOOT_CMD( + booti, CONFIG_SYS_MAXARGS, 1, do_booti, + "boot arm64 Linux Image image from memory", booti_help_text +); -- cgit v1.2.3