c1029ccbf8
This is quite long at present. Rename it so that fixes better with the bootstd naming. Signed-off-by: Simon Glass <sjg@chromium.org>
92 lines
2.1 KiB
C
92 lines
2.1 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* (C) Copyright 2003
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* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
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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 <env.h>
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#include <image.h>
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#include <log.h>
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#include <asm/global_data.h>
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#include <u-boot/zlib.h>
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#include <bzlib.h>
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#include <watchdog.h>
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#include <asm/byteorder.h>
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DECLARE_GLOBAL_DATA_PTR;
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#define PHYSADDR(x) x
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#define LINUX_MAX_ENVS 256
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#define LINUX_MAX_ARGS 256
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static void set_clocks_in_mhz (struct bd_info *kbd);
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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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int ret;
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struct bd_info *kbd;
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void (*kernel) (struct bd_info *, ulong, ulong, ulong, ulong);
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/*
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* allow the PREP bootm subcommand, it is required for bootm to work
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*/
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if (flag & BOOTMS_OS_PREP)
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return 0;
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if ((flag != 0) && (flag != BOOTMS_OS_GO))
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return 1;
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/* allocate space for kernel copy of board info */
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ret = boot_get_kbd(&kbd);
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if (ret) {
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puts("ERROR with allocation of kernel bd\n");
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goto error;
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}
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set_clocks_in_mhz(kbd);
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if (IS_ENABLED(CONFIG_LMB)) {
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ret = image_setup_linux(images);
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if (ret)
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goto error;
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}
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kernel = (void (*)(struct bd_info *, ulong, ulong, ulong, ulong))images->ep;
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debug("## Transferring control to Linux (at address %08lx) ...\n",
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(ulong) kernel);
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bootstage_mark(BOOTSTAGE_ID_RUN_OS);
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/*
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* Linux Kernel Parameters (passing board info data):
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* sp+00: Ignore, side effect of using jsr to jump to kernel
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* sp+04: ptr to board info data
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* sp+08: initrd_start or 0 if no initrd
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* sp+12: initrd_end - unused if initrd_start is 0
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* sp+16: Start of command line string
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* sp+20: End of command line string
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*/
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(*kernel)(kbd, images->initrd_start, images->initrd_end,
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images->cmdline_start, images->cmdline_end);
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/* does not return */
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error:
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return 1;
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}
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static void set_clocks_in_mhz (struct bd_info *kbd)
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{
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char *s;
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s = env_get("clocks_in_mhz");
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if (s) {
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/* convert all clock information to MHz */
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kbd->bi_intfreq /= 1000000L;
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kbd->bi_busfreq /= 1000000L;
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}
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}
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