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https://github.com/smaeul/u-boot.git
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45ce6f9e35
Curent U-Boot can boot zImage by use the "go" command. But this is not right method. And this method can not set command-line to linux kernel. zimageboot sets command-line in environment of u-boot in linux kernel, and provides function to boot it. Signed-off-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
81 lines
1.9 KiB
C
81 lines
1.9 KiB
C
/*
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* (C) Copyright 2010
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* Renesas Solutions Corp.
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* Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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/*
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* Linux SuperH zImage loading and boot
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*/
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#include <common.h>
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#include <asm/io.h>
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#include <asm/zimage.h>
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int do_sh_zimageboot (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
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{
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ulong (*zboot_entry)(int, char * const []) = NULL;
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char *s0, *s1;
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unsigned char *param = NULL;
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char *cmdline;
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char *bootargs;
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disable_interrupts();
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if (argc >= 3) {
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/* argv[1] holds the address of the zImage */
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s0 = argv[1];
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/* argv[2] holds the address of zero page */
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s1 = argv[2];
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} else {
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goto exit;
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}
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if (s0)
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zboot_entry = (ulong (*)(int, char * const []))simple_strtoul(s0, NULL, 16);
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/* empty_zero_page */
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if (s1)
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param = (unsigned char*)simple_strtoul(s1, NULL, 16);
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/* Linux kernel command line */
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cmdline = (char *)param + COMMAND_LINE;
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bootargs = getenv("bootargs");
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/* Clear zero page */
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memset(param, 0, 0x1000);
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/* Set commandline */
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strcpy(cmdline, bootargs);
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/* Boot */
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zboot_entry(0, NULL);
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exit:
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return -1;
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}
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U_BOOT_CMD(
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zimageboot, 3, 0, do_sh_zimageboot,
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"Boot zImage for Renesas SH",
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""
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);
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