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https://github.com/u-boot/u-boot.git
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6534d26ee9
All of the current definitions of arch_lmb_reserve() are doing the same thing -- reserve the region of memory occupied by U-Boot, starting from the current stack address to the ram_top. Introduce a function lmb_reserve_uboot_region() which does this, and do away with the arch_lmb_reserve() function. Instead of using the current value of stack pointer for starting the reserved region, have a fixed value, considering the stack size config value. Signed-off-by: Sughosh Ganu <sughosh.ganu@linaro.org> Reviewed-by: Simon Glass <sjg@chromium.org> Acked-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
94 lines
2.3 KiB
C
94 lines
2.3 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 <bootm.h>
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#include <bootstage.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 <log.h>
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#include <asm/cache.h>
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#include <asm/global_data.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 void boot_jump_linux(struct bootm_headers *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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flush_cache_all();
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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(struct bootm_headers *images)
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{
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if (CONFIG_IS_ENABLED(OF_LIBFDT) && IS_ENABLED(CONFIG_LMB) && 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, struct bootm_info *bmi)
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{
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struct bootm_headers *images = bmi->images;
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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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