This command boots Linux zImage from where the zImage is loaded to. Passing initrd and fdt is supported.
Tested on PXA270 based Voipac PXA270.
Signed-off-by: Marek Vasut marek.vasut@gmail.com Cc: Tom Warren TWarren@nvidia.com Cc: albert.u.boot@aribaud.net Cc: afleming@gmail.com, Cc: Simon Glass sjg@chromium.org, Cc: Stephen Warren swarren@nvidia.com --- common/Makefile | 1 + common/cmd_bootz.c | 178 ++++++++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 179 insertions(+), 0 deletions(-) create mode 100644 common/cmd_bootz.c
diff --git a/common/Makefile b/common/Makefile index 1b672ad..1ddf77a 100644 --- a/common/Makefile +++ b/common/Makefile @@ -42,6 +42,7 @@ COBJS-y += xyzModem.o # core command COBJS-y += cmd_boot.o COBJS-$(CONFIG_CMD_BOOTM) += cmd_bootm.o +COBJS-$(CONFIG_CMD_BOOTZ) += cmd_bootz.o COBJS-y += cmd_help.o COBJS-y += cmd_nvedit.o COBJS-y += cmd_version.o diff --git a/common/cmd_bootz.c b/common/cmd_bootz.c new file mode 100644 index 0000000..bb35209 --- /dev/null +++ b/common/cmd_bootz.c @@ -0,0 +1,178 @@ +/* + * Copyright (C) 2011 Marek Vasut marek.vasut@gmail.com + * + * Based on code: + * (C) Copyright 2000-2009 + * Wolfgang Denk, DENX Software Engineering, wd@denx.de. + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +#include <common.h> +#include <watchdog.h> +#include <command.h> +#include <image.h> +#include <malloc.h> +#include <u-boot/zlib.h> +#include <bzlib.h> +#include <environment.h> +#include <lmb.h> +#include <linux/ctype.h> +#include <asm/byteorder.h> + +#if defined(CONFIG_CMD_USB) +#include <usb.h> +#endif + +#if defined(CONFIG_SYS_HUSH_PARSER) +#include <hush.h> +#endif + +#if defined(CONFIG_OF_LIBFDT) +#include <fdt.h> +#include <libfdt.h> +#include <fdt_support.h> +#endif + +#define IH_INITRD_ARCH IH_ARCH_DEFAULT + +extern int do_bootm_linux(int flag, int argc, char *argv[], + bootm_headers_t *images); + +static void bootm_start_lmb(bootm_headers_t *images) +{ +#ifdef CONFIG_LMB + ulong mem_start; + phys_size_t mem_size; + + lmb_init(&images->lmb); + + mem_start = getenv_bootm_low(); + mem_size = getenv_bootm_size(); + + lmb_add(&images->lmb, (phys_addr_t)mem_start, mem_size); + + arch_lmb_reserve(&images->lmb); + board_lmb_reserve(&images->lmb); +#else +# define lmb_reserve(lmb, base, size) +#endif +} + +static int bootz_start(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[], + bootm_headers_t *images) +{ + int ret; + + memset(images, 0, sizeof(bootm_headers_t)); + + bootm_start_lmb(images); + + /* Setup Linux kernel zImage entry point */ + if (argc < 2) { + images->ep = load_addr; + debug("* kernel: default image load address = 0x%08lx\n", + load_addr); + } else { + images->ep = simple_strtoul(argv[1], NULL, 16); + debug("* kernel: cmdline image address = 0x%08lx\n", + images->ep); + } + + lmb_reserve(&images->lmb, images->ep, 16 * 1024*1024); + + /* Find ramdisk */ + ret = boot_get_ramdisk(argc, argv, images, IH_INITRD_ARCH, + &images->rd_start, &images->rd_end); + if (ret) { + puts("Ramdisk image is corrupt or invalid\n"); + return 1; + } + +#if defined(CONFIG_OF_LIBFDT) + /* find flattened device tree */ + ret = boot_get_fdt(flag, argc, argv, images, + &images->ft_addr, &images->ft_len); + if (ret) { + puts("Could not find a valid device tree\n"); + return 1; + } + + set_working_fdt_addr(images->ft_addr); +#endif + + return 0; +} + +int do_bootz(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) +{ + ulong iflag; + bootm_headers_t images; + + if (bootz_start(cmdtp, flag, argc, argv, &images)) + return 1; + + /* + * We have reached the point of no return: we are going to + * overwrite all exception vector code, so we cannot easily + * recover from any failures any more... + */ + iflag = disable_interrupts(); + +#if defined(CONFIG_CMD_USB) + /* + * turn off USB to prevent the host controller from writing to the + * SDRAM while Linux is booting. This could happen (at least for OHCI + * controller), because the HCCA (Host Controller Communication Area) + * lies within the SDRAM and the host controller writes continously to + * this area (as busmaster!). The HccaFrameNumber is for example + * updated every 1 ms within the HCCA structure in SDRAM! For more + * details see the OpenHCI specification. + */ + usb_stop(); +#endif + +#ifdef CONFIG_SILENT_CONSOLE + fixup_silent_linux(); +#endif + arch_preboot_os(); + + do_bootm_linux(0, argc, argv, &images); +#ifdef DEBUG + puts("\n## Control returned to monitor - resetting...\n"); +#endif + do_reset(cmdtp, flag, argc, argv); + + return 1; +} + +U_BOOT_CMD( + bootz, CONFIG_SYS_MAXARGS, 1, do_bootz, + "boot Linux zImage image from memory", + "[addr [initrd] [fdt]]\n - boot Linux zImage stored in memory\n" + "\tThe argument 'initrd' is optional and specifies the address\n" + "\tof the initrd in memory.\n" +#if defined(CONFIG_OF_LIBFDT) + "\tWhen booting a Linux kernel which requires a flat device-tree\n" + "\ta third argument is required which is the address of the\n" + "\tdevice-tree blob. To boot that kernel without an initrd image,\n" + "\tuse a '-' for the second argument. If you do not pass a third\n" + "\ta bd_info struct will be passed instead\n" +#endif +);