| /* |
| * Copyright (C) 2008 Advanced Micro Devices, Inc. |
| * Copyright (C) 2009 coresystems GmbH |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * 3. The name of the author may not be used to endorse or promote products |
| * derived from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
| * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
| * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| * SUCH DAMAGE. |
| */ |
| |
| #include <coreboot_tables.h> |
| #include <stdint.h> |
| #include <stdlib.h> |
| #include <sysinfo.h> |
| |
| #include "base/fwdb.h" |
| #include "base/physmem.h" |
| #include "drivers/framebuffer/framebuffer.h" |
| #include "vboot/util/vboot_handoff.h" |
| |
| struct sysinfo_t lib_sysinfo; |
| |
| /* |
| * The code in this file applies to all coreboot architectures. Some coreboot |
| * table tags are architecture specific, they are handled by their respective |
| * cb_parse_arch_specific() functions. |
| */ |
| |
| /* === Parsing code === */ |
| /* This is the generic parsing code. */ |
| |
| static void cb_parse_memory(void *ptr, struct sysinfo_t *info) |
| { |
| struct cb_memory *mem = ptr; |
| int count = MEM_RANGE_COUNT(mem); |
| |
| E820MemRanges *e820_map = get_e820_mem_ranges(); |
| if (!e820_map) |
| return; |
| |
| if (count > ARRAY_SIZE(e820_map->ranges)) |
| count = ARRAY_SIZE(e820_map->ranges); |
| |
| e820_map->num_ranges = count; |
| for (int i = 0; i < count; i++) { |
| struct cb_memory_range *range = MEM_RANGE_PTR(mem, i); |
| E820MemRange *e820 = &e820_map->ranges[i]; |
| e820->base = cb_unpack64(range->start); |
| e820->size = cb_unpack64(range->size); |
| |
| switch (range->type) { |
| case CB_MEM_RAM: |
| case CB_MEM_RESERVED: |
| case CB_MEM_ACPI: |
| case CB_MEM_NVS: |
| case CB_MEM_UNUSABLE: |
| e820->type = range->type; |
| break; |
| case CB_MEM_TABLE: |
| e820->type = E820MemRange_Reserved; |
| default: |
| e820->type = E820MemRange_Unusable; |
| } |
| e820->handoff_tag = range->type; |
| } |
| } |
| |
| static void cb_parse_vboot_handoff(unsigned char *ptr, struct sysinfo_t *info) |
| { |
| struct lb_range *vbho = (struct lb_range *)ptr; |
| struct vboot_handoff *vboot_handoff = |
| (struct vboot_handoff *)(uintptr_t)vbho->range_start; |
| |
| if (vbho->range_size != sizeof(struct vboot_handoff)) |
| return; |
| |
| FwdbEntry shared_data = { |
| .ptr = &vboot_handoff->shared_data[0], |
| .size = ARRAY_SIZE(vboot_handoff->shared_data), |
| }; |
| fwdb_access("vboot.shared_data", NULL, &shared_data); |
| |
| FwdbEntry init_params = { |
| .ptr = &vboot_handoff->init_params, |
| .size = sizeof(vboot_handoff->init_params), |
| }; |
| fwdb_access("vboot.handoff.init_params", NULL, &init_params); |
| } |
| |
| static void cb_parse_vbnv(unsigned char *ptr, struct sysinfo_t *info) |
| { |
| struct lb_range *vbnv = (struct lb_range *)ptr; |
| |
| info->vbnv_start = vbnv->range_start; |
| info->vbnv_size = vbnv->range_size; |
| } |
| |
| static void cb_parse_gpios(unsigned char *ptr, struct sysinfo_t *info) |
| { |
| struct cb_gpios *gpios = (struct cb_gpios *)ptr; |
| |
| const char prefix[] = "gpio."; |
| char name_buf[sizeof(prefix) + sizeof(gpios->gpios[0].name)]; |
| memset(name_buf, 0, sizeof(name_buf)); |
| memcpy(name_buf, prefix, sizeof(prefix)); |
| char *suffix_ptr = &name_buf[sizeof(prefix) - 1]; |
| |
| for (int i = 0; i < gpios->count; i++) { |
| struct cb_gpio *gpio = &gpios->gpios[i]; |
| |
| uint8_t val = gpio->value; |
| if (gpio->polarity == CB_GPIO_ACTIVE_LOW) |
| val = !val; |
| |
| FwdbEntry gpio_entry = { |
| .ptr = &val, |
| .size = sizeof(val), |
| }; |
| memcpy(suffix_ptr, gpio->name, sizeof(gpio->name)); |
| fwdb_access(name_buf, NULL, &gpio_entry); |
| } |
| } |
| |
| static void cb_parse_vdat(unsigned char *ptr, struct sysinfo_t *info) |
| { |
| struct lb_range *vdat = (struct lb_range *) ptr; |
| |
| info->vdat_addr = (void *)(uintptr_t)vdat->range_start; |
| info->vdat_size = vdat->range_size; |
| } |
| |
| static void cb_parse_tstamp(unsigned char *ptr, struct sysinfo_t *info) |
| { |
| struct cb_cbmem_tab *const cbmem = (struct cb_cbmem_tab *)ptr; |
| info->tstamp_table = (void *)(uintptr_t)cbmem->cbmem_tab; |
| } |
| |
| static void cb_parse_cbmem_cons(unsigned char *ptr, struct sysinfo_t *info) |
| { |
| struct cb_cbmem_tab *const cbmem = (struct cb_cbmem_tab *)ptr; |
| info->cbmem_cons = (void *)(uintptr_t)cbmem->cbmem_tab; |
| } |
| |
| static void cb_parse_acpi_gnvs(unsigned char *ptr, struct sysinfo_t *info) |
| { |
| struct cb_cbmem_tab *const cbmem = (struct cb_cbmem_tab *)ptr; |
| info->acpi_gnvs = (void *)(uintptr_t)cbmem->cbmem_tab; |
| } |
| |
| static void cb_parse_board_id(unsigned char *ptr, struct sysinfo_t *info) |
| { |
| struct cb_board_id *const cbbid = (struct cb_board_id *)ptr; |
| info->board_id = cbbid->board_id; |
| } |
| |
| static void cb_parse_ram_code(unsigned char *ptr, struct sysinfo_t *info) |
| { |
| struct cb_ram_code *const ram_code = (struct cb_ram_code *)ptr; |
| info->ram_code = ram_code->ram_code; |
| } |
| |
| static void cb_parse_framebuffer(void *ptr, struct sysinfo_t *info) |
| { |
| struct cb_framebuffer *cbfb = ptr; |
| info->framebuffer = cbfb; |
| FrameBuffer fb = { |
| .header = { |
| .version = FrameBufferCurrentVersion, |
| }, |
| .buffer = (void *)(uintptr_t)cbfb->physical_address, |
| .resolution = { |
| .x = cbfb->x_resolution, |
| .y = cbfb->y_resolution, |
| }, |
| .bytes_per_line = cbfb->bytes_per_line, |
| .bits_per_pixel = cbfb->bits_per_pixel, |
| .red = { |
| .pos = cbfb->red_mask_pos, |
| .size = cbfb->red_mask_size & 0x7, |
| }, |
| .green = { |
| .pos = cbfb->green_mask_pos, |
| .size = cbfb->green_mask_size & 0x7, |
| }, |
| .blue = { |
| .pos = cbfb->blue_mask_pos, |
| .size = cbfb->blue_mask_size & 0x7, |
| }, |
| }; |
| |
| framebuffer_write_to_fwdb(&fb); |
| } |
| |
| static void cb_parse_ramoops(void *ptr, struct sysinfo_t *info) |
| { |
| struct lb_range *ramoops = (struct lb_range *)ptr; |
| |
| info->ramoops_buffer = ramoops->range_start; |
| info->ramoops_buffer_size = ramoops->range_size; |
| } |
| |
| static void cb_parse_mtc(void *ptr, struct sysinfo_t *info) |
| { |
| struct lb_range *mtc = (struct lb_range *)ptr; |
| |
| info->mtc_start = mtc->range_start; |
| info->mtc_size = mtc->range_size; |
| } |
| |
| static void cb_parse_spi_flash(void *ptr, struct sysinfo_t *info) |
| { |
| struct cb_spi_flash *flash = (struct cb_spi_flash *)ptr; |
| |
| info->spi_flash.size = flash->flash_size; |
| info->spi_flash.sector_size = flash->sector_size; |
| info->spi_flash.erase_cmd = flash->erase_cmd; |
| } |
| |
| static void cb_parse_boot_media_params(unsigned char *ptr, |
| struct sysinfo_t *info) |
| { |
| struct cb_boot_media_params *const bmp = |
| (struct cb_boot_media_params *)ptr; |
| info->cbfs_offset = bmp->cbfs_offset; |
| info->cbfs_size = bmp->cbfs_size; |
| } |
| |
| int cb_parse_header(void *addr, int len, struct sysinfo_t *info) |
| { |
| struct cb_header *header; |
| unsigned char *ptr = addr; |
| void *forward; |
| int i; |
| |
| for (i = 0; i < len; i += 16, ptr += 16) { |
| header = (struct cb_header *)ptr; |
| if (!strncmp((const char *)header->signature, "LBIO", 4)) |
| break; |
| } |
| |
| /* We walked the entire space and didn't find anything. */ |
| if (i >= len) |
| return -1; |
| |
| /* Make sure the checksums match. */ |
| if (ipchecksum((uint16_t *)header, sizeof(*header)) != 0) |
| return -1; |
| |
| if (!header->table_bytes) |
| return 0; |
| |
| if (ipchecksum((uint16_t *)(ptr + sizeof(*header)), |
| header->table_bytes) != header->table_checksum) |
| return -1; |
| |
| info->header = header; |
| |
| /* |
| * Board straps represented by numerical values are small numbers. |
| * Preset them to an invalid value in case the firmware does not |
| * supply the info. |
| */ |
| info->board_id = ~0; |
| info->ram_code = ~0; |
| |
| /* Now, walk the tables. */ |
| ptr += header->header_bytes; |
| |
| for (i = 0; i < header->table_entries; i++) { |
| struct cb_record *rec = (struct cb_record *)ptr; |
| |
| /* We only care about a few tags here (maybe more later). */ |
| switch (rec->tag) { |
| case CB_TAG_FORWARD: |
| forward = (void *)(uintptr_t) |
| ((struct cb_forward *)rec)->forward; |
| return cb_parse_header(forward, len, info); |
| continue; |
| case CB_TAG_MEMORY: |
| cb_parse_memory(ptr, info); |
| break; |
| case CB_TAG_FRAMEBUFFER: |
| cb_parse_framebuffer(ptr, info); |
| break; |
| case CB_TAG_GPIO: |
| cb_parse_gpios(ptr, info); |
| break; |
| case CB_TAG_VDAT: |
| cb_parse_vdat(ptr, info); |
| break; |
| case CB_TAG_VBNV: |
| cb_parse_vbnv(ptr, info); |
| break; |
| case CB_TAG_VBOOT_HANDOFF: |
| cb_parse_vboot_handoff(ptr, info); |
| break; |
| case CB_TAG_TIMESTAMPS: |
| cb_parse_tstamp(ptr, info); |
| break; |
| case CB_TAG_CBMEM_CONSOLE: |
| cb_parse_cbmem_cons(ptr, info); |
| break; |
| case CB_TAG_ACPI_GNVS: |
| cb_parse_acpi_gnvs(ptr, info); |
| break; |
| case CB_TAG_BOARD_ID: |
| cb_parse_board_id(ptr, info); |
| break; |
| case CB_TAG_RAM_CODE: |
| cb_parse_ram_code(ptr, info); |
| break; |
| case CB_TAG_RAM_OOPS: |
| cb_parse_ramoops(ptr, info); |
| break; |
| case CB_TAG_SPI_FLASH: |
| cb_parse_spi_flash(ptr, info); |
| break; |
| case CB_TAG_MTC: |
| cb_parse_mtc(ptr, info); |
| break; |
| case CB_TAG_BOOT_MEDIA_PARAMS: |
| cb_parse_boot_media_params(ptr, info); |
| break; |
| default: |
| cb_parse_arch_specific(rec, info); |
| break; |
| } |
| |
| ptr += rec->size; |
| } |
| |
| return 0; |
| } |