On Tue, 30 Jun 2015, Damien Lespiau <damien.lespiau@xxxxxxxxx> wrote:
> So we can inspect fw headers. Sample output:
Nitpick on the tool name, I'd like to make a distinction between tools
that dump some blob from the driver/hardware/bios/whatever, and tools
that decode those blobs. (See also the confusing naming with
intel_bios_dumper vs. intel_bios_reader.) I'd call this
"intel_firmware_decode".
Another nitpick is that I'd plan on using getopt from the beginning, and
having a -f or --file option for the input.
BR,
Jani.
> Firmware: skl_dmc_ver1_18.bin (7892 bytes)
> CSS header (128 bytes)
> module_type: DMC (9)
> header_len: 32
> header_ver: 0x10000
> module_id: 0x0
> module_vendor: 0x0
> date: 0x7df060c
> size: 1973
> key_size: 0
> modulus_size: 0
> exponent_size: 0
> version: 1.18 (0x10012)
> kernel_header_info: 0x0
> Package header (256 bytes)
> header_len: 64
> header_ver: 1
> num_entries: 3
> Firmware #1
> stepping: A.*
> offset: 4294967295
> Firmware #2
> stepping: B.*
> offset: 4294967295
> Firmware #3
> stepping: *.*
> offset: 0
> 0x7f0867143000
> 0x7f0867143180
> signature: 0x40403e3e
> header_len: 128
> header_ver: 1
> dmcc_ver: 520
> project: 0x900
> fw_size: 1845
> fw_version: 0x10008
> mmio_count: 3
> write(0x0008f074, 0x00002fc0)
> write(0x0008f004, 0x02500204)
> write(0x0008f034, 0xc003b400)
>
> Signed-off-by: Damien Lespiau <damien.lespiau@xxxxxxxxx>
> ---
> tools/.gitignore | 1 +
> tools/Makefile.sources | 1 +
> tools/intel_fw_dump.c | 287 +++++++++++++++++++++++++++++++++++++++++++++++++
> 3 files changed, 289 insertions(+)
> create mode 100644 tools/intel_fw_dump.c
>
> diff --git a/tools/.gitignore b/tools/.gitignore
> index 5a2f5ff..5a5c62c 100644
> --- a/tools/.gitignore
> +++ b/tools/.gitignore
> @@ -10,6 +10,7 @@ intel_dump_decode
> intel_error_decode
> intel_forcewaked
> intel_framebuffer_dump
> +intel_fw_dump
> intel_gpu_frequency
> intel_gpu_time
> intel_gpu_top
> diff --git a/tools/Makefile.sources b/tools/Makefile.sources
> index 5acf45a..6f51162 100644
> --- a/tools/Makefile.sources
> +++ b/tools/Makefile.sources
> @@ -17,6 +17,7 @@ bin_PROGRAMS = \
> intel_forcewaked \
> intel_gpu_frequency \
> intel_framebuffer_dump \
> + intel_fw_dump \
> intel_gpu_time \
> intel_gpu_top \
> intel_gtt \
> diff --git a/tools/intel_fw_dump.c b/tools/intel_fw_dump.c
> new file mode 100644
> index 0000000..ae6e02c
> --- /dev/null
> +++ b/tools/intel_fw_dump.c
> @@ -0,0 +1,287 @@
> +/*
> + * Copyright © 2015 Intel Corporation
> + *
> + * Permission is hereby granted, free of charge, to any person obtaining a
> + * copy of this software and associated documentation files (the "Software"),
> + * to deal in the Software without restriction, including without limitation
> + * the rights to use, copy, modify, merge, publish, distribute, sublicense,
> + * and/or sell copies of the Software, and to permit persons to whom the
> + * Software is furnished to do so, subject to the following conditions:
> + *
> + * The above copyright notice and this permission notice (including the next
> + * paragraph) shall be included in all copies or substantial portions of the
> + * Software.
> + *
> + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
> + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
> + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
> + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
> + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
> + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
> + * IN THE SOFTWARE.
> + *
> + * Authors:
> + * Damien Lespiau <damien.lespiau@xxxxxxxxx>
> + */
> +
> +#include <fcntl.h>
> +#include <stdio.h>
> +#include <stdint.h>
> +#include <stdlib.h>
> +#include <string.h>
> +#include <unistd.h>
> +#include <sys/types.h>
> +#include <sys/mman.h>
> +#include <sys/stat.h>
> +
> +#include "igt_core.h"
> +
> +#define __packed __attribute__((packed))
> +
> +struct intel_css_header {
> + /* 0x09 for DMC */
> + uint32_t module_type;
> +
> + /* Includes the DMC specific header in dwords */
> + uint32_t header_len;
> +
> + /* always value would be 0x10000 */
> + uint32_t header_ver;
> +
> + /* Not used */
> + uint32_t module_id;
> +
> + /* Not used */
> + uint32_t module_vendor;
> +
> + /* in YYYYMMDD format */
> + uint32_t date;
> +
> + /* Size in dwords (CSS_Headerlen + PackageHeaderLen + dmc FWsLen)/4 */
> + uint32_t size;
> +
> + /* Not used */
> + uint32_t key_size;
> +
> + /* Not used */
> + uint32_t modulus_size;
> +
> + /* Not used */
> + uint32_t exponent_size;
> +
> + /* Not used */
> + uint32_t reserved1[12];
> +
> + /* Major Minor */
> + uint32_t version;
> +
> + /* Not used */
> + uint32_t reserved2[8];
> +
> + /* Not used */
> + uint32_t kernel_header_info;
> +} __packed;
> +
> +struct intel_fw_info {
> + uint16_t reserved1;
> +
> + /* Stepping (A, B, C, ..., *). * is a wildcard */
> + char stepping;
> +
> + /* Sub-stepping (0, 1, ..., *). * is a wildcard */
> + char substepping;
> +
> + uint32_t offset;
> + uint32_t reserved2;
> +} __packed;
> +
> +struct intel_package_header {
> + /* DMC container header length in dwords */
> + unsigned char header_len;
> +
> + /* always value would be 0x01 */
> + unsigned char header_ver;
> +
> + unsigned char reserved[10];
> +
> + /* Number of valid entries in the FWInfo array below */
> + uint32_t num_entries;
> +
> + struct intel_fw_info fw_info[20];
> +} __packed;
> +
> +struct intel_dmc_header {
> + /* always value would be 0x40403E3E */
> + uint32_t signature;
> +
> + /* DMC binary header length */
> + unsigned char header_len;
> +
> + /* 0x01 */
> + unsigned char header_ver;
> +
> + /* Reserved */
> + uint16_t dmcc_ver;
> +
> + /* Major, Minor */
> + uint32_t project;
> +
> + /* Firmware program size (excluding header) in dwords */
> + uint32_t fw_size;
> +
> + /* Major Minor version */
> + uint32_t fw_version;
> +
> + /* Number of valid MMIO cycles present. */
> + uint32_t mmio_count;
> +
> + /* MMIO address */
> + uint32_t mmioaddr[8];
> +
> + /* MMIO data */
> + uint32_t mmiodata[8];
> +
> + /* FW filename */
> + unsigned char dfile[32];
> +
> + uint32_t reserved1[2];
> +} __packed;
> +
> +typedef struct {
> + int fd;
> + uint8_t *base;
> + struct intel_css_header *css_header;
> + struct intel_package_header *package_header;
> +} csr_t;
> +
> +static void csr_open(csr_t *ctx, const char *filename)
> +{
> + struct stat st;
> +
> + ctx->fd = open(filename, O_RDWR);
> + igt_fail_on_f(ctx->fd == -1, "Couldn't open %s\n", filename);
> +
> + fstat(ctx->fd, &st);
> + ctx->base = mmap(NULL, st.st_size, PROT_READ | PROT_WRITE, MAP_PRIVATE,
> + ctx->fd, 0);
> + igt_fail_on_f(ctx->base == MAP_FAILED, "Couldn't mmap %s\n", filename);
> +
> + printf("Firmware: %s (%zd bytes)\n", filename, st.st_size);
> +
> + ctx->css_header = (struct intel_css_header *)ctx->base;
> + ctx->package_header = (struct intel_package_header *)
> + (ctx->base + sizeof(*ctx->css_header));
> +}
> +
> +#define print_d32(p, field) \
> + printf(" "#field": %u\n", (p)->field)
> +#define print_x32(p, field) \
> + printf(" "#field": 0x%x\n", (p)->field)
> +#define print_s(p, field) \
> + printf(" "#field": %s\n", (p)->field)
> +
> +static const char *module_type_name(uint32_t module_type)
> +{
> + switch (module_type) {
> + case 0x9:
> + return "DMC";
> + default:
> + return "Unknown";
> + }
> +}
> +
> +static void dump_css(csr_t *ctx)
> +{
> + struct intel_css_header *css = ctx->css_header;
> +
> + printf("CSS header (%zd bytes)\n", sizeof(*css));
> + printf(" module_type: %s (%d)\n", module_type_name(css->module_type),
> + css->module_type);
> + print_d32(css, header_len);
> + print_x32(css, header_ver);
> + print_x32(css, module_id);
> + print_x32(css, module_vendor);
> + print_x32(css, date);
> + print_d32(css, size);
> + print_d32(css, key_size);
> + print_d32(css, modulus_size);
> + print_d32(css, exponent_size);
> + /* uint32_t reserved1[12]; */
> + printf(" version: %d.%d (0x%x)\n", css->version >> 16,
> + css->version & 0xffff, css->version);
> + /* uint32_t reserved2[8]; */
> + print_x32(css, kernel_header_info);
> +
> +}
> +
> +static void dump_dmc(csr_t *ctx, struct intel_fw_info *info)
> +{
> + struct intel_dmc_header *dmc;
> + unsigned int i;
> +
> + if (info->offset == 0xffffffff)
> + return;
> +
> + dmc = (struct intel_dmc_header *)(ctx->base + sizeof(*ctx->css_header)
> + + sizeof(*ctx->package_header) +
> + info->offset);
> +
> + print_x32(dmc, signature);
> + print_d32(dmc, header_len);
> + print_d32(dmc, header_ver);
> + print_d32(dmc, dmcc_ver);
> + print_x32(dmc, project);
> + print_d32(dmc, fw_size);
> + print_x32(dmc, fw_version);
> + print_d32(dmc, mmio_count);
> +
> + for (i = 0; i < dmc->mmio_count; i++) {
> + printf(" write(0x%08x, 0x%08x)\n", dmc->mmioaddr[i],
> + dmc->mmiodata[i]);
> + }
> +}
> +
> +static void dump_package(csr_t *ctx)
> +{
> + struct intel_package_header *package = ctx->package_header;
> + unsigned int i;
> +
> + printf("Package header (%zd bytes)\n", sizeof(*package));
> +
> + print_d32(package, header_len);
> + print_d32(package, header_ver);
> + /* unsigned char reserved[10]; */
> + print_d32(package, num_entries);
> +
> + for (i = 0; i < package->num_entries; i++) {
> + struct intel_fw_info *info = &package->fw_info[i];
> +
> + printf("Firmware #%d\n", i + 1);
> + printf(" stepping: %c.%c\n", info->stepping,
> + info->substepping);
> + print_d32(info, offset);
> +
> + dump_dmc(ctx, info);
> + }
> +}
> +
> +static void csr_dump(csr_t *ctx)
> +{
> + dump_css(ctx);
> + dump_package(ctx);
> +}
> +
> +static csr_t ctx;
> +
> +int main(int argc, char **argv)
> +{
> + if (argc != 2) {
> + fprintf(stderr, "Usage: %s firmware.bin\n", argv[0]);
> + return 1;
> + }
> +
> + csr_open(&ctx, argv[1]);
> + csr_dump(&ctx);
> +
> + return 0;
> +}
> --
> 2.1.0
>
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--
Jani Nikula, Intel Open Source Technology Center
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