src/soc/ti/am335x/header.h

   1 /* SPDX-License-Identifier: GPL-2.0-or-later */
   2
   3 #ifndef __SOC_TI_AM335X_HEADER_H
   4 #define __SOC_TI_AM335X_HEADER_H
   5
   6 #include <stdint.h>
   7
   8 struct configuration_header_toc_item {
   9         // Offset from the start address of the TOC to the actual address of
  10         // a section.
  11         uint32_t start;
  12
  13         // Size of a section.
  14         uint32_t size;
  15
  16         // Reserved.
  17         uint32_t reserved[3];
  18
  19         // 12-character name of a section, including the zero (\0) terminator.
  20         char filename[12];
  21 } __packed;
  22
  23 struct configuration_header_settings {
  24         // Key used for section verification.
  25         uint32_t key;
  26
  27         // Enables or disables the section.
  28         // 00h: Disable.
  29         // Other: Enable.
  30         uint8_t valid;
  31
  32         // Configuration header version.
  33         uint8_t version;
  34
  35         // Reserved.
  36         uint16_t reserved;
  37
  38         // Flags. It's not clear what this is used for.
  39         uint32_t flags;
  40 } __packed;
  41
  42 struct gp_device_header {
  43         // Size of the image.
  44         uint32_t size;
  45
  46         // Address to store the image/code entry point.
  47         uint32_t destination;
  48 } __packed;
  49
  50 struct config_headers {
  51         // The table of contents.
  52         struct configuration_header_toc_item toc_chsettings;
  53         struct configuration_header_toc_item toc_end;
  54
  55         // An inert instance of chsettings.
  56         struct configuration_header_settings chsettings;
  57 } __packed;
  58
  59 struct omap_image_headers {
  60         union {
  61                 struct config_headers config_headers;
  62                 uint8_t bytes[512];
  63         };
  64         struct gp_device_header image_header;
  65 };
  66
  67 #endif