From: Simon Schwarz simonschwarzcor@googlemail.com
This adds a spl command to the u-boot.
Related config: CONFIG_CMD_CPL activate/deactivate the command CONFIG_CMD_SPL_NAND_OFS Offset in NAND to use
Signed-off-by: Simon Schwarz simonschwarzcor@gmail.com CC: Tom Rini tom.rini@gmail.com CC: Stefano Babic sbabic@denx.de CC: Wolfgang Denk wd@denx.de --- common/Makefile | 1 + common/cmd_spl.c | 229 +++++++++++++++++++++++++++++++++++++++++++++++ doc/README.commands.spl | 31 +++++++ include/cmd_spl.h | 30 ++++++ include/image.h | 2 + 5 files changed, 293 insertions(+), 0 deletions(-) create mode 100644 common/cmd_spl.c create mode 100644 doc/README.commands.spl create mode 100644 include/cmd_spl.h
diff --git a/common/Makefile b/common/Makefile index 2d9ae8c..910c056 100644 --- a/common/Makefile +++ b/common/Makefile @@ -162,6 +162,7 @@ COBJS-$(CONFIG_USB_STORAGE) += usb_storage.o endif COBJS-$(CONFIG_CMD_XIMG) += cmd_ximg.o COBJS-$(CONFIG_YAFFS2) += cmd_yaffs2.o +COBJS-$(CONFIG_CMD_SPL) += cmd_spl.o
# others ifdef CONFIG_DDR_SPD diff --git a/common/cmd_spl.c b/common/cmd_spl.c new file mode 100644 index 0000000..deab8e9 --- /dev/null +++ b/common/cmd_spl.c @@ -0,0 +1,229 @@ +/* + * Copyright (C) 2011 + * Corscience GmbH & Co. KG - Simon Schwarz schwarz@corscience.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 <command.h> +#include <cmd_spl.h> + +DECLARE_GLOBAL_DATA_PTR; + +/* Calls bootm with the parameters given */ +static int call_bootm(int argc, char * const argv[], char *subcommand[]) +{ + char *bootm_argv[5]; + char command[] = "do_bootm"; + + int i = 0; + int ret = 0; + + /* create paramter array */ + bootm_argv[0] = command; + switch (argc) { + case 3: + bootm_argv[4] = argv[2]; /* fdt addr */ + case 2: + bootm_argv[3] = argv[1]; /* initrd addr */ + case 1: + bootm_argv[2] = argv[0]; /* kernel addr */ + } + + + /* + * - do the work - + * exec subcommands of do_bootm to init the images + * data structure + */ + while (subcommand[i] != NULL) { + bootm_argv[1] = subcommand[i]; + debug("args: %s, %s, %s, %s, %s, %d\n", bootm_argv[0], + bootm_argv[1], bootm_argv[2], bootm_argv[3], + bootm_argv[4], argc); + ret = do_bootm(find_cmd("do_bootm"), 0, argc+2, + bootm_argv); + debug("Subcommand retcode: %d\n", ret); + i++; + } + + if (ret) { + printf("ERROR prep subcommand failed!\n"); + return -1; + } + + return 0; +} + +/* assemble the bootm paramteres for fdt creation */ +static int spl_export_fdt(int argc, char * const argv[]) +{ +#ifdef CONFIG_OF_LIBFDT + /* Create subcommand string */ + char *subcommand[] = { + "start", + "loados", +#ifdef CONFIG_SYS_BOOT_RAMDISK_HIGH + "ramdisk", +#endif + "fdt", + "cmdline", + "bdt", + "prep", + NULL}; + + /* inspect paramters and execute bootm */ + argc--; + argv++; + if (call_bootm(argc, argv, subcommand)) + return -1; + + printf("Argument image is now in RAM: 0x%p\n", + (void *)images.ft_addr); + return 0; +#else + printf("Das U-Boot was build without fdt support - aborting\n"); + return -1; +#endif +} + +/* assemble the bootm patameters for atags creation */ +static int spl_export_atags(int argc, char * const argv[]) +{ +#if defined(CONFIG_SETUP_MEMORY_TAGS) || \ + defined(CONFIG_CMDLINE_TAG) || \ + defined(CONFIG_INITRD_TAG) || \ + defined(CONFIG_SERIAL_TAG) || \ + defined(CONFIG_REVISION_TAG) + /* Create subcommand string */ + char *subcommand[] = { + "start", + "loados", +#ifdef CONFIG_SYS_BOOT_RAMDISK_HIGH + "ramdisk", +#endif + "cmdline", + "bdt", + "prep", + NULL}; + + /* inspect parameters and execute bootm */ + argc--; + argv++; + if (call_bootm(argc, argv, subcommand)) + return -1; + + printf("Argument image is now in RAM at: 0x%p\n", + (void *)gd->bd->bi_boot_params); + return 0; +#endif + printf("Das U-Boot was build without ATAGS support - aborting\n"); + return -1; +} + +static cmd_tbl_t cmd_spl_export_sub[] = { + U_BOOT_CMD_MKENT(fdt, 0, 1, (void *)SPL_EXPORT_FDT, "", ""), + U_BOOT_CMD_MKENT(atags, 0, 1, (void *)SPL_EXPORT_ATAGS, "", ""), +}; + +static int spl_export(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) +{ + const cmd_tbl_t *c; + int cmd; + + if (argc < 2) /* no subcommand */ + return cmd_usage(cmdtp); + + c = find_cmd_tbl(argv[1], &cmd_spl_export_sub[0], + ARRAY_SIZE(cmd_spl_export_sub)); + if (c) { + cmd = (int)c->cmd; + switch (cmd) { + case SPL_EXPORT_FDT: + argc--; + argv++; + return spl_export_fdt(argc, argv); + break; + case SPL_EXPORT_ATAGS: + argc--; + argv++; + return spl_export_atags(argc, argv); + break; + default: + /* unrecognized command */ + return cmd_usage(cmdtp); + } + } else { + /* Unrecognized command */ + return cmd_usage(cmdtp); + } + + return 0; +} + +static cmd_tbl_t cmd_spl_sub[] = { + U_BOOT_CMD_MKENT(export, 0, 1, (void *)SPL_EXPORT, "", ""), +}; + +static int do_spl(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) +{ + const cmd_tbl_t *c; + int cmd; + + if (argc < 2) /* no subcommand */ + return cmd_usage(cmdtp); + + c = find_cmd_tbl(argv[1], &cmd_spl_sub[0], ARRAY_SIZE(cmd_spl_sub)); + if (c) { + cmd = (int)c->cmd; + switch (cmd) { + case SPL_EXPORT: + argc--; + argv++; + if (spl_export(cmdtp, flag, argc, argv)) + printf("Subcommand failed\n"); + break; + default: + /* unrecognized command */ + return cmd_usage(cmdtp); + } + } else { + /* Unrecognized command */ + return cmd_usage(cmdtp); + } + return 0; +} + +/* + * Arguments: + * 1: subcommand + * 2: image_type + * 3: nand_offset + * 4: kernel_addr + * 5: initrd_addr + * 6: fdt_adr + */ + +U_BOOT_CMD( + spl, 6 , 1, do_spl, "SPL configuration", + "export <img=atags|fdt> [kernel_addr] [initrd_addr] " + "[fdt_addr if <img> = fdt] - export a kernel parameter image\n" + "\t initrd_img can be set to "-" if fdt_addr without initrd img is" + "used"); diff --git a/doc/README.commands.spl b/doc/README.commands.spl new file mode 100644 index 0000000..818dd53 --- /dev/null +++ b/doc/README.commands.spl @@ -0,0 +1,31 @@ +The spl command is used to export a boot parameter image to RAM. Later +it may implement more functions connected to the SPL. + +SUBCOMMAND EXPORT +To execute the command everything has to be in place as if bootm should be +used. (kernel image, initrd-image, fdt-image etc.) + +export has to subcommands: + atags: exports the ATAGS + fdt: exports the FDT + +Call is: +spl export <ftd|atags> [kernel_addr] [initrd_addr] [fdt_addr if fdt] + + +TYPICAL CALL + +on OMAP3: +nandecc hw +nand read 0x82000000 0x280000 0x400000 /* Read kernel image from NAND*/ +spl export atags /* export ATAGS */ +nand erase 0x680000 0x20000 /* erase - one page */ +nand write 0x80000100 0x680000 0x20000 /* write the image - one page */ + +call with FDT: +nandecc hw +nand read 0x82000000 0x280000 0x400000 /* Read kernel image from NAND*/ +tftpboot 0x80000100 devkit8000.dtb /* Read fdt */ +spl export fdt 0x82000000 - 0x80000100 /* export FDT */ +nand erase 0x680000 0x20000 /* erase - one page */ +nand write <adress shown by spl export> 0x680000 0x20000 diff --git a/include/cmd_spl.h b/include/cmd_spl.h new file mode 100644 index 0000000..2845367 --- /dev/null +++ b/include/cmd_spl.h @@ -0,0 +1,30 @@ +/* Copyright (C) 2011 + * Corscience GmbH & Co. KG - Simon Schwarz schwarz@corscience.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 + */ +#ifndef _NAND_SPL_H_ +#define _NAND_SPL_H_ + +#define SPL_EXPORT (0x00000001) + +#define SPL_EXPORT_FDT (0x00000001) +#define SPL_EXPORT_ATAGS (0x00000002) + +#endif /* _NAND_SPL_H_ */ diff --git a/include/image.h b/include/image.h index bbf80f0..a1c6e4e 100644 --- a/include/image.h +++ b/include/image.h @@ -268,6 +268,8 @@ typedef struct bootm_headers { #endif } bootm_headers_t;
+extern bootm_headers_t images; + /* * Some systems (for example LWMON) have very short watchdog periods; * we must make sure to split long operations like memmove() or