| Nobuhiro Iwamatsu | 45ce6f9 | 2010-12-08 13:49:12 +0900 | [diff] [blame] | 1 | /* |
| 2 | * (C) Copyright 2010 |
| 3 | * Renesas Solutions Corp. |
| 4 | * Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com> |
| 5 | * |
| 6 | * See file CREDITS for list of people who contributed to this |
| 7 | * project. |
| 8 | * |
| 9 | * This program is free software; you can redistribute it and/or |
| 10 | * modify it under the terms of the GNU General Public License as |
| 11 | * published by the Free Software Foundation; either version 2 of |
| 12 | * the License, or (at your option) any later version. |
| 13 | * |
| 14 | * This program is distributed in the hope that it will be useful, |
| 15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 17 | * GNU General Public License for more details. |
| 18 | * |
| 19 | * You should have received a copy of the GNU General Public License |
| 20 | * along with this program; if not, write to the Free Software |
| 21 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, |
| 22 | * MA 02111-1307 USA |
| 23 | */ |
| 24 | |
| 25 | /* |
| 26 | * Linux SuperH zImage loading and boot |
| 27 | */ |
| 28 | |
| 29 | #include <common.h> |
| 30 | #include <asm/io.h> |
| 31 | #include <asm/zimage.h> |
| 32 | |
| 33 | int do_sh_zimageboot (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) |
| 34 | { |
| 35 | ulong (*zboot_entry)(int, char * const []) = NULL; |
| 36 | char *s0, *s1; |
| 37 | unsigned char *param = NULL; |
| 38 | char *cmdline; |
| 39 | char *bootargs; |
| 40 | |
| 41 | disable_interrupts(); |
| 42 | |
| 43 | if (argc >= 3) { |
| 44 | /* argv[1] holds the address of the zImage */ |
| 45 | s0 = argv[1]; |
| 46 | /* argv[2] holds the address of zero page */ |
| 47 | s1 = argv[2]; |
| 48 | } else { |
| 49 | goto exit; |
| 50 | } |
| 51 | |
| 52 | if (s0) |
| 53 | zboot_entry = (ulong (*)(int, char * const []))simple_strtoul(s0, NULL, 16); |
| 54 | |
| 55 | /* empty_zero_page */ |
| 56 | if (s1) |
| 57 | param = (unsigned char*)simple_strtoul(s1, NULL, 16); |
| 58 | |
| 59 | /* Linux kernel command line */ |
| 60 | cmdline = (char *)param + COMMAND_LINE; |
| 61 | bootargs = getenv("bootargs"); |
| 62 | |
| 63 | /* Clear zero page */ |
| 64 | memset(param, 0, 0x1000); |
| 65 | |
| 66 | /* Set commandline */ |
| 67 | strcpy(cmdline, bootargs); |
| 68 | |
| 69 | /* Boot */ |
| 70 | zboot_entry(0, NULL); |
| 71 | |
| 72 | exit: |
| 73 | return -1; |
| 74 | } |
| 75 | |
| 76 | U_BOOT_CMD( |
| 77 | zimageboot, 3, 0, do_sh_zimageboot, |
| 78 | "Boot zImage for Renesas SH", |
| 79 | "" |
| 80 | ); |