mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-07-10 13:16:16 +09:00
db41d65a97
At present panic() is in the vsprintf.h header file. That does not seem like an obvious choice for hang(), even though it relates to panic(). So let's put hang() in its own header. Signed-off-by: Simon Glass <sjg@chromium.org> [trini: Migrate a few more files] Signed-off-by: Tom Rini <trini@konsulko.com>
131 lines
3.1 KiB
C
131 lines
3.1 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* (C) Copyright 2007 Michal Simek
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* (C) Copyright 2004 Atmark Techno, Inc.
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*
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* Michal SIMEK <monstr@monstr.eu>
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* Yasushi SHOJI <yashi@atmark-techno.com>
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*/
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#include <common.h>
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#include <command.h>
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#include <cpu_func.h>
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#include <env.h>
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#include <fdt_support.h>
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#include <hang.h>
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#include <image.h>
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#include <u-boot/zlib.h>
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#include <asm/byteorder.h>
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DECLARE_GLOBAL_DATA_PTR;
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static ulong get_sp(void)
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{
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ulong ret;
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asm("addik %0, r1, 0" : "=r"(ret) : );
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return ret;
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}
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void arch_lmb_reserve(struct lmb *lmb)
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{
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ulong sp, bank_end;
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int bank;
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/*
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* Booting a (Linux) kernel image
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*
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* Allocate space for command line and board info - the
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* address should be as high as possible within the reach of
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* the kernel (see CONFIG_SYS_BOOTMAPSZ settings), but in unused
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* memory, which means far enough below the current stack
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* pointer.
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*/
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sp = get_sp();
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debug("## Current stack ends at 0x%08lx ", sp);
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/* adjust sp by 4K to be safe */
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sp -= 4096;
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for (bank = 0; bank < CONFIG_NR_DRAM_BANKS; bank++) {
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if (sp < gd->bd->bi_dram[bank].start)
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continue;
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bank_end = gd->bd->bi_dram[bank].start +
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gd->bd->bi_dram[bank].size;
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if (sp >= bank_end)
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continue;
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lmb_reserve(lmb, sp, bank_end - sp);
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break;
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}
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}
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static void boot_jump_linux(bootm_headers_t *images, int flag)
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{
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void (*thekernel)(char *cmdline, ulong rd, ulong dt);
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ulong dt = (ulong)images->ft_addr;
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ulong rd_start = images->initrd_start;
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ulong cmdline = images->cmdline_start;
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int fake = (flag & BOOTM_STATE_OS_FAKE_GO);
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thekernel = (void (*)(char *, ulong, ulong))images->ep;
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debug("## Transferring control to Linux (at address 0x%08lx) ",
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(ulong)thekernel);
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debug("cmdline 0x%08lx, ramdisk 0x%08lx, FDT 0x%08lx...\n",
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cmdline, rd_start, dt);
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bootstage_mark(BOOTSTAGE_ID_RUN_OS);
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printf("\nStarting kernel ...%s\n\n", fake ?
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"(fake run for tracing)" : "");
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bootstage_mark_name(BOOTSTAGE_ID_BOOTM_HANDOFF, "start_kernel");
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#ifdef XILINX_USE_DCACHE
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flush_cache(0, XILINX_DCACHE_BYTE_SIZE);
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#endif
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if (!fake) {
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/*
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* Linux Kernel Parameters (passing device tree):
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* r5: pointer to command line
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* r6: pointer to ramdisk
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* r7: pointer to the fdt, followed by the board info data
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*/
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thekernel((char *)cmdline, rd_start, dt);
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/* does not return */
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}
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}
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static void boot_prep_linux(bootm_headers_t *images)
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{
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if (IMAGE_ENABLE_OF_LIBFDT && images->ft_len) {
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debug("using: FDT\n");
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if (image_setup_linux(images)) {
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printf("FDT creation failed! hanging...");
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hang();
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}
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}
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}
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int do_bootm_linux(int flag, int argc, char * const argv[],
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bootm_headers_t *images)
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{
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images->cmdline_start = (ulong)env_get("bootargs");
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/* cmdline init is the part of 'prep' and nothing to do for 'bdt' */
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if (flag & BOOTM_STATE_OS_BD_T || flag & BOOTM_STATE_OS_CMDLINE)
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return -1;
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if (flag & BOOTM_STATE_OS_PREP) {
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boot_prep_linux(images);
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return 0;
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}
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if (flag & (BOOTM_STATE_OS_GO | BOOTM_STATE_OS_FAKE_GO)) {
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boot_jump_linux(images, flag);
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return 0;
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}
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boot_prep_linux(images);
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boot_jump_linux(images, flag);
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return 1;
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}
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