diff options
Diffstat (limited to 'src/cpu/ti/am335x')
| -rw-r--r-- | src/cpu/ti/am335x/Makefile.inc | 17 | ||||
| -rw-r--r-- | src/cpu/ti/am335x/header.c | 72 | ||||
| -rw-r--r-- | src/cpu/ti/am335x/header.h | 67 | ||||
| -rw-r--r-- | src/cpu/ti/am335x/header.ld | 34 |
4 files changed, 190 insertions, 0 deletions
diff --git a/src/cpu/ti/am335x/Makefile.inc b/src/cpu/ti/am335x/Makefile.inc index 8c4c663113..c1bbcf6ce7 100644 --- a/src/cpu/ti/am335x/Makefile.inc +++ b/src/cpu/ti/am335x/Makefile.inc @@ -10,3 +10,20 @@ ramstage-y += monotonic_timer.c ramstage-y += nand.c ramstage-y += timer.c ramstage-y += uart.c + +$(call add-class,omap-header) + +real-target: $(obj)/MLO + +header_ld = $(src)/cpu/ti/am335x/header.ld + +$(obj)/omap-header.bin: $$(omap-header-objs) $$(header_ld) + @printf " CC $(subst $(obj)/,,$(@))\n" + $(CC) -nostdlib -nostartfiles -static -include $(obj)/config.h -o $@.tmp $< -T $(header_ld) + $(OBJCOPY) --only-section=".header" -O binary $@.tmp $@ + +$(obj)/MLO: $(obj)/coreboot.rom $(obj)/omap-header.bin + @printf " HEADER $(subst $(obj)/,,$(@))\n" + $(Q)cat $(obj)/omap-header.bin $(obj)/coreboot.rom > $@ + +omap-header-y += header.c diff --git a/src/cpu/ti/am335x/header.c b/src/cpu/ti/am335x/header.c new file mode 100644 index 0000000000..bd2f344fd4 --- /dev/null +++ b/src/cpu/ti/am335x/header.c @@ -0,0 +1,72 @@ +/* + * Copyright (C) 2013 Google Inc. + * + * 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 <config.h> +#include <stddef.h> +#include <stdint.h> + +#include "header.h" + +struct config_headers { + // The table of contents. + struct configuration_header_toc_item toc_chsettings; + struct configuration_header_toc_item toc_end; + + // An inert instance of chsettings. + struct configuration_header_settings chsettings; +} __attribute__((packed)); + +struct omap_image_headers { + union { + struct config_headers config_headers; + uint8_t bytes[512]; + }; + struct gp_device_header image_header; +}; + +struct omap_image_headers headers __attribute__((section(".header"))) = { + .config_headers = { + .toc_chsettings = { + .start = offsetof(struct omap_image_headers, + config_headers.chsettings), + .size = sizeof(struct configuration_header_settings), + .reserved = { 0, 0, 0 }, + .filename = "CHSETTINGS\0" + }, + .toc_end = { + .start = 0xffffffff, + .size = 0xffffffff, + .reserved = { 0xffffffff, 0xffffffff, 0xffffffff }, + .filename = { 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff } + }, + .chsettings = { + .key = 0xc0c0c0c1, + .valid = 0, + .version = 1, + .reserved = 0, + .flags = 0 + } + }, + .image_header = { + .size = CONFIG_ROM_SIZE, + .destination = CONFIG_BOOTBLOCK_BASE + } +}; diff --git a/src/cpu/ti/am335x/header.h b/src/cpu/ti/am335x/header.h new file mode 100644 index 0000000000..84afd3561b --- /dev/null +++ b/src/cpu/ti/am335x/header.h @@ -0,0 +1,67 @@ +/* + * Copyright (C) 2013 Google Inc. + * + * 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 __CPU_TI_AM335X_HEADER_H +#define __CPU_TI_AM335X_HEADER_H + +#include <stdint.h> + +struct configuration_header_toc_item { + // Offset from the start address of the TOC to the actual address of + // a section. + uint32_t start; + + // Size of a section. + uint32_t size; + + // Reserved. + uint32_t reserved[3]; + + // 12-character name of a section, including the zero (\0) terminator. + char filename[12]; +} __attribute__((packed)); + +struct configuration_header_settings { + // Key used for section verification. + uint32_t key; + + // Enables or disables the section. + // 00h: Disable. + // Other: Enable. + uint8_t valid; + + // Configuration header version. + uint8_t version; + + // Reserved. + uint16_t reserved; + + // Flags. It's not clear what this is used for. + uint32_t flags; +} __attribute__((packed)); + +struct gp_device_header { + // Size of the image. + uint32_t size; + + // Address to store the image/code entry point. + uint32_t destination; +} __attribute__((packed)); + +#endif diff --git a/src/cpu/ti/am335x/header.ld b/src/cpu/ti/am335x/header.ld new file mode 100644 index 0000000000..33c10e198c --- /dev/null +++ b/src/cpu/ti/am335x/header.ld @@ -0,0 +1,34 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2013 Google Inc. + * + * 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; version 2 of the License. + * + * 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +/* We use ELF as output format. So that we can debug the code in some form. */ +OUTPUT_FORMAT("elf32-littlearm", "elf32-littlearm", "elf32-littlearm") +OUTPUT_ARCH(arm) + +TARGET(binary) +SECTIONS +{ + .header : { + *(.header); + } + + /DISCARD/ : { + *(*) + } +} |