This adds the savebp implementation to the arm platform.
Related CONFIGs: CONFIG_CMD_SAVEBP_WRITE_SIZE defines the size of the image to write
Signed-off-by: Simon Schwarz simonschwarzcor@gmail.com ---
V2 changes: DEL _cosmetic_ old comment --- arch/arm/include/asm/savebp.h | 27 ++++++++++++ arch/arm/lib/Makefile | 1 + arch/arm/lib/savebp.c | 91 +++++++++++++++++++++++++++++++++++++++++ include/command.h | 5 ++ include/configs/devkit8000.h | 1 + 5 files changed, 125 insertions(+), 0 deletions(-) create mode 100644 arch/arm/include/asm/savebp.h create mode 100644 arch/arm/lib/savebp.c
diff --git a/arch/arm/include/asm/savebp.h b/arch/arm/include/asm/savebp.h new file mode 100644 index 0000000..3774e45 --- /dev/null +++ b/arch/arm/include/asm/savebp.h @@ -0,0 +1,27 @@ +/* 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 _SAVEBP_H_ +#define _SAVEBP_H_ + +extern bootm_headers_t images; + +#endif /* _SAVEBP_H_ */ diff --git a/arch/arm/lib/Makefile b/arch/arm/lib/Makefile index 300c8fa..abf7a6a 100644 --- a/arch/arm/lib/Makefile +++ b/arch/arm/lib/Makefile @@ -44,6 +44,7 @@ COBJS-y += cache-cp15.o COBJS-$(CONFIG_SYS_L2_PL310) += cache-pl310.o COBJS-y += interrupts.o COBJS-y += reset.o +COBJS-$(CONFIG_CMD_SAVEBP) += savebp.o SOBJS-$(CONFIG_USE_ARCH_MEMSET) += memset.o SOBJS-$(CONFIG_USE_ARCH_MEMCPY) += memcpy.o endif diff --git a/arch/arm/lib/savebp.c b/arch/arm/lib/savebp.c new file mode 100644 index 0000000..e0cfd83 --- /dev/null +++ b/arch/arm/lib/savebp.c @@ -0,0 +1,91 @@ +/* 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 <image.h> + +#include <nand.h> +#include <asm/savebp.h> + +#ifdef CONFIG_OMAP34XX +#include <asm/arch/sys_proto.h> +#endif + +DECLARE_GLOBAL_DATA_PTR; + +/* This function writes given bootparams to NAND flash + * adr: Start adress of Kernel parameter image (ATAGS, FDT) + * length: length of the image in byte + * off: offset in NAND flash + * + * borrowd heavily from common/cmd_nand.c + */ +static void boot_params_to_nand(u_char *adr, size_t length, loff_t off) +{ + nand_info_t *nand = &nand_info[0]; /* use 0 as in SPL */ + nand_erase_options_t opts; +#ifdef CONFIG_OMAP34XX + omap_nand_switch_ecc(1); /* use hw ecc on omap for SPL compat */ +#endif + /* erase */ + memset(&opts, 0, sizeof(opts)); + opts.offset = off; + opts.length = length; + opts.quiet = 1; + opts.spread = 1; + nand_erase_opts(nand, &opts); + + /* write */ + if (nand_write_skip_bad(nand, off, &length, adr, 0)) { + printf("FAILED!\n"); + return; + } + + printf("Written to offset 0x%llX, size: %d bytes\n", + off, length); +} + +/* Saves FDT to NAND */ +int do_savebp_fdt(loff_t offset) +{ + boot_params_to_nand((u_char *)images.ft_addr, + CONFIG_CMD_SAVEBP_WRITE_SIZE, offset); + return 0; +} + + +/* Saves ATAGS to NAND */ +int do_savebp_atags(loff_t offset) +{ + /* Vars */ + bd_t *bd = gd->bd; + + printf("write ATAGS to NAND...\n"); + + /* save em */ + /* used fixed size - easier to read later just ignore garbage */ + boot_params_to_nand((u_char *)bd->bi_boot_params, + CONFIG_CMD_SAVEBP_WRITE_SIZE, offset); + + return 0; +} diff --git a/include/command.h b/include/command.h index 8310fe5..3ae68a8 100644 --- a/include/command.h +++ b/include/command.h @@ -101,6 +101,11 @@ extern int do_bootd(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]); extern int do_bootm(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]); extern int do_reset(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]);
+#ifdef CONFIG_CMD_SAVEBP +int do_savebp_atags(loff_t offset); +int do_savebp_fdt(loff_t offset); +#endif + #endif /* __ASSEMBLY__ */
/* diff --git a/include/configs/devkit8000.h b/include/configs/devkit8000.h index 80b441a..4d0573c 100644 --- a/include/configs/devkit8000.h +++ b/include/configs/devkit8000.h @@ -355,6 +355,7 @@
/* SPL OS boot options */ #define CONFIG_CMD_SAVEBP +#define CONFIG_CMD_SAVEBP_WRITE_SIZE 0x400 /* 1024 byte */ #define CONFIG_CMD_SAVEBP_NAND_OFS (CONFIG_SYS_NAND_SPL_KERNEL_OFFS+\ 0x400000) #define CONFIG_SYS_NAND_SPL_KERNEL_OFFS 0x280000