X-Git-Url: https://git.kernelconcepts.de/?a=blobdiff_plain;f=arch%2Farm%2Flib%2Fbootm.c;h=47ee070593b7fed5094df4312f6994fc2c205cec;hb=91290cf728dd871c86f370119899789398d956af;hp=160ba55111177f3f3f803c159e43ab2c9744fde4;hpb=a939ea3ab459d5fb3d1eaaec289c6ca85f2f74c1;p=karo-tx-uboot.git diff --git a/arch/arm/lib/bootm.c b/arch/arm/lib/bootm.c index 160ba55111..47ee070593 100644 --- a/arch/arm/lib/bootm.c +++ b/arch/arm/lib/bootm.c @@ -9,20 +9,7 @@ * * Copyright (C) 2001 Erik Mouw (J.A.K.Mouw@its.tudelft.nl) * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - * + * SPDX-License-Identifier: GPL-2.0+ */ #include @@ -30,20 +17,18 @@ #include #include #include -#include #include #include #include +#include + +#if defined(CONFIG_ARMV7_NONSEC) || defined(CONFIG_ARMV7_VIRT) +#include +#endif DECLARE_GLOBAL_DATA_PTR; -#if defined(CONFIG_SETUP_MEMORY_TAGS) || \ - defined(CONFIG_CMDLINE_TAG) || \ - defined(CONFIG_INITRD_TAG) || \ - defined(CONFIG_SERIAL_TAG) || \ - defined(CONFIG_REVISION_TAG) static struct tag *params; -#endif static ulong get_sp(void) { @@ -69,33 +54,25 @@ void arch_lmb_reserve(struct lmb *lmb) sp = get_sp(); debug("## Current stack ends at 0x%08lx ", sp); - /* adjust sp by 1K to be safe */ - sp -= 1024; + /* adjust sp by 4K to be safe */ + sp -= 4096; lmb_reserve(lmb, sp, gd->bd->bi_dram[0].start + gd->bd->bi_dram[0].size - sp); } -#ifdef CONFIG_OF_LIBFDT -static int fixup_memory_node(void *blob) -{ - bd_t *bd = gd->bd; - int bank; - u64 start[CONFIG_NR_DRAM_BANKS]; - u64 size[CONFIG_NR_DRAM_BANKS]; - - for (bank = 0; bank < CONFIG_NR_DRAM_BANKS; bank++) { - start[bank] = bd->bi_dram[bank].start; - size[bank] = bd->bi_dram[bank].size; - } - - return fdt_fixup_memory_banks(blob, start, size, CONFIG_NR_DRAM_BANKS); -} -#endif - -static void announce_and_cleanup(void) +/** + * announce_and_cleanup() - Print message and prepare for kernel boot + * + * @fake: non-zero to do everything except actually boot + */ +static void announce_and_cleanup(int fake) { - printf("\nStarting kernel ...\n\n"); + printf("\nStarting kernel ...%s\n\n", fake ? + "(fake run for tracing)" : ""); bootstage_mark_name(BOOTSTAGE_ID_BOOTM_HANDOFF, "start_kernel"); +#ifdef CONFIG_BOOTSTAGE_FDT + bootstage_fdt_add_report(); +#endif #ifdef CONFIG_BOOTSTAGE_REPORT bootstage_report(); #endif @@ -106,11 +83,6 @@ static void announce_and_cleanup(void) cleanup_before_linux(); } -#if defined(CONFIG_SETUP_MEMORY_TAGS) || \ - defined(CONFIG_CMDLINE_TAG) || \ - defined(CONFIG_INITRD_TAG) || \ - defined(CONFIG_SERIAL_TAG) || \ - defined(CONFIG_REVISION_TAG) static void setup_start_tag (bd_t *bd) { params = (struct tag *)bd->bi_boot_params; @@ -124,9 +96,7 @@ static void setup_start_tag (bd_t *bd) params = tag_next (params); } -#endif -#ifdef CONFIG_SETUP_MEMORY_TAGS static void setup_memory_tags(bd_t *bd) { int i; @@ -141,9 +111,7 @@ static void setup_memory_tags(bd_t *bd) params = tag_next (params); } } -#endif -#ifdef CONFIG_CMDLINE_TAG static void setup_commandline_tag(bd_t *bd, char *commandline) { char *p; @@ -168,9 +136,7 @@ static void setup_commandline_tag(bd_t *bd, char *commandline) params = tag_next (params); } -#endif -#ifdef CONFIG_INITRD_TAG static void setup_initrd_tag(bd_t *bd, ulong initrd_start, ulong initrd_end) { /* an ATAG_INITRD node tells the kernel where the compressed @@ -184,14 +150,11 @@ static void setup_initrd_tag(bd_t *bd, ulong initrd_start, ulong initrd_end) params = tag_next (params); } -#endif -#ifdef CONFIG_SERIAL_TAG -void setup_serial_tag(struct tag **tmp) +static void setup_serial_tag(struct tag **tmp) { struct tag *params = *tmp; struct tag_serialnr serialnr; - void get_board_serial(struct tag_serialnr *serialnr); get_board_serial(&serialnr); params->hdr.tag = ATAG_SERIAL; @@ -201,13 +164,10 @@ void setup_serial_tag(struct tag **tmp) params = tag_next (params); *tmp = params; } -#endif -#ifdef CONFIG_REVISION_TAG -void setup_revision_tag(struct tag **in_params) +static void setup_revision_tag(struct tag **in_params) { u32 rev = 0; - u32 get_board_rev(void); rev = get_board_rev(); params->hdr.tag = ATAG_REVISION; @@ -215,108 +175,99 @@ void setup_revision_tag(struct tag **in_params) params->u.revision.rev = rev; params = tag_next (params); } -#endif -#if defined(CONFIG_SETUP_MEMORY_TAGS) || \ - defined(CONFIG_CMDLINE_TAG) || \ - defined(CONFIG_INITRD_TAG) || \ - defined(CONFIG_SERIAL_TAG) || \ - defined(CONFIG_REVISION_TAG) static void setup_end_tag(bd_t *bd) { params->hdr.tag = ATAG_NONE; params->hdr.size = 0; } -#endif - -#ifdef CONFIG_OF_LIBFDT -static int create_fdt(bootm_headers_t *images) -{ - ulong of_size = images->ft_len; - char **of_flat_tree = &images->ft_addr; - ulong *initrd_start = &images->initrd_start; - ulong *initrd_end = &images->initrd_end; - struct lmb *lmb = &images->lmb; - ulong rd_len; - int ret; - - debug("using: FDT\n"); - - boot_fdt_add_mem_rsv_regions(lmb, *of_flat_tree); - rd_len = images->rd_end - images->rd_start; - ret = boot_ramdisk_high(lmb, images->rd_start, rd_len, - initrd_start, initrd_end); - if (ret) - return ret; +__weak void setup_board_tags(struct tag **in_params) {} - ret = boot_relocate_fdt(lmb, of_flat_tree, &of_size); - if (ret) - return ret; - - fdt_chosen(*of_flat_tree, 1); - fixup_memory_node(*of_flat_tree); - fdt_initrd(*of_flat_tree, *initrd_start, *initrd_end, 1); +static void do_nonsec_virt_switch(void) +{ +#if defined(CONFIG_ARMV7_NONSEC) || defined(CONFIG_ARMV7_VIRT) + if (armv7_switch_nonsec() == 0) +#ifdef CONFIG_ARMV7_VIRT + if (armv7_switch_hyp() == 0) + debug("entered HYP mode\n"); +#else + debug("entered non-secure state\n"); +#endif +#endif - return 0; -} +#ifdef CONFIG_ARM64 + smp_kick_all_cpus(); + flush_dcache_all(); /* flush cache before swtiching to EL2 */ + armv8_switch_to_el2(); +#ifdef CONFIG_ARMV8_SWITCH_TO_EL1 + armv8_switch_to_el1(); +#endif #endif +} /* Subcommand: PREP */ static void boot_prep_linux(bootm_headers_t *images) { -#ifdef CONFIG_CMDLINE_TAG char *commandline = getenv("bootargs"); -#endif + if (IMAGE_ENABLE_OF_LIBFDT && images->ft_len) { #ifdef CONFIG_OF_LIBFDT - if (images->ft_len) { debug("using: FDT\n"); - if (create_fdt(images)) { + if (image_setup_linux(images)) { printf("FDT creation failed! hanging..."); hang(); } - } else #endif - { -#if defined(CONFIG_SETUP_MEMORY_TAGS) || \ - defined(CONFIG_CMDLINE_TAG) || \ - defined(CONFIG_INITRD_TAG) || \ - defined(CONFIG_SERIAL_TAG) || \ - defined(CONFIG_REVISION_TAG) + } else if (BOOTM_ENABLE_TAGS) { debug("using: ATAGS\n"); setup_start_tag(gd->bd); -#ifdef CONFIG_SERIAL_TAG - setup_serial_tag(¶ms); -#endif -#ifdef CONFIG_CMDLINE_TAG - setup_commandline_tag(gd->bd, commandline); -#endif -#ifdef CONFIG_REVISION_TAG - setup_revision_tag(¶ms); -#endif -#ifdef CONFIG_SETUP_MEMORY_TAGS - setup_memory_tags(gd->bd); -#endif -#ifdef CONFIG_INITRD_TAG - if (images->rd_start && images->rd_end) - setup_initrd_tag(gd->bd, images->rd_start, - images->rd_end); -#endif + if (BOOTM_ENABLE_SERIAL_TAG) + setup_serial_tag(¶ms); + if (BOOTM_ENABLE_CMDLINE_TAG) + setup_commandline_tag(gd->bd, commandline); + if (BOOTM_ENABLE_REVISION_TAG) + setup_revision_tag(¶ms); + if (BOOTM_ENABLE_MEMORY_TAGS) + setup_memory_tags(gd->bd); + if (BOOTM_ENABLE_INITRD_TAG) { + if (images->rd_start && images->rd_end) { + setup_initrd_tag(gd->bd, images->rd_start, + images->rd_end); + } + } + setup_board_tags(¶ms); setup_end_tag(gd->bd); -#else /* all tags */ + } else { printf("FDT and ATAGS support not compiled in - hanging\n"); hang(); -#endif /* all tags */ } + do_nonsec_virt_switch(); } /* Subcommand: GO */ -static void boot_jump_linux(bootm_headers_t *images) +static void boot_jump_linux(bootm_headers_t *images, int flag) { +#ifdef CONFIG_ARM64 + void (*kernel_entry)(void *fdt_addr); + int fake = (flag & BOOTM_STATE_OS_FAKE_GO); + + kernel_entry = (void (*)(void *fdt_addr))images->ep; + + debug("## Transferring control to Linux (at address %lx)...\n", + (ulong) kernel_entry); + bootstage_mark(BOOTSTAGE_ID_RUN_OS); + + announce_and_cleanup(fake); + + if (!fake) + kernel_entry(images->ft_addr); +#else unsigned long machid = gd->bd->bi_arch_number; char *s; void (*kernel_entry)(int zero, int arch, uint params); + unsigned long r2; + int fake = (flag & BOOTM_STATE_OS_FAKE_GO); kernel_entry = (void (*)(int, int, uint))images->ep; @@ -329,8 +280,16 @@ static void boot_jump_linux(bootm_headers_t *images) debug("## Transferring control to Linux (at address %08lx)" \ "...\n", (ulong) kernel_entry); bootstage_mark(BOOTSTAGE_ID_RUN_OS); - announce_and_cleanup(); - kernel_entry(0, machid, gd->bd->bi_boot_params); + announce_and_cleanup(fake); + + if (IMAGE_ENABLE_OF_LIBFDT && images->ft_len) + r2 = (unsigned long)images->ft_addr; + else + r2 = gd->bd->bi_boot_params; + + if (!fake) + kernel_entry(0, machid, r2); +#endif } /* Main Entry point for arm bootm implementation @@ -350,12 +309,67 @@ int do_bootm_linux(int flag, int argc, char *argv[], bootm_headers_t *images) return 0; } - if (flag & BOOTM_STATE_OS_GO) { - boot_jump_linux(images); + if (flag & (BOOTM_STATE_OS_GO | BOOTM_STATE_OS_FAKE_GO)) { + boot_jump_linux(images, flag); return 0; } boot_prep_linux(images); - boot_jump_linux(images); + boot_jump_linux(images, flag); return 0; } + +#ifdef CONFIG_CMD_BOOTZ + +struct zimage_header { + uint32_t code[9]; + uint32_t zi_magic; + uint32_t zi_start; + uint32_t zi_end; +}; + +#define LINUX_ARM_ZIMAGE_MAGIC 0x016f2818 + +int bootz_setup(ulong image, ulong *start, ulong *end) +{ + struct zimage_header *zi; + + zi = (struct zimage_header *)map_sysmem(image, 0); + if (zi->zi_magic != LINUX_ARM_ZIMAGE_MAGIC) { + puts("Bad Linux ARM zImage magic!\n"); + return 1; + } + + *start = zi->zi_start; + *end = zi->zi_end; + + printf("Kernel image @ %#08lx [ %#08lx - %#08lx ]\n", image, *start, + *end); + + return 0; +} + +#endif /* CONFIG_CMD_BOOTZ */ + +#if defined(CONFIG_BOOTM_VXWORKS) +void boot_prep_vxworks(bootm_headers_t *images) +{ +#if defined(CONFIG_OF_LIBFDT) + int off; + + if (images->ft_addr) { + off = fdt_path_offset(images->ft_addr, "/memory"); + if (off < 0) { + if (arch_fixup_memory_node(images->ft_addr)) + puts("## WARNING: fixup memory failed!\n"); + } + } +#endif + cleanup_before_linux(); +} +void boot_jump_vxworks(bootm_headers_t *images) +{ + /* ARM VxWorks requires device tree physical address to be passed */ + ((void (*)(void *))images->ep)(images->ft_addr); +} +#endif