src/lib/bmp_logo.c

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2
   3 #include <acpi/acpi.h>
   4 #include <bootsplash.h>
   5 #include <cbfs.h>
   6 #include <cbmem.h>
   7 #include <stdint.h>
   8 #include <vendorcode/google/chromeos/chromeos.h>
   9
  10 static const struct cbmem_entry *logo_entry;
  11
  12 #if !CONFIG(HAVE_CUSTOM_BMP_LOGO)
  13 const char *bmp_logo_filename(void)
  14 {
  15         return "logo.bmp";
  16 }
  17 #endif
  18
  19 void *bmp_load_logo(size_t *logo_size)
  20 {
  21         void *logo_buffer;
  22
  23         /* CBMEM is locked for S3 resume path. */
  24         if (acpi_is_wakeup_s3())
  25                 return NULL;
  26
  27         logo_entry = cbmem_entry_add(CBMEM_ID_FSP_LOGO, 1 * MiB);
  28         if (!logo_entry)
  29                 return NULL;
  30
  31         logo_buffer = cbmem_entry_start(logo_entry);
  32         if (!logo_buffer)
  33                 return NULL;
  34
  35         *logo_size = cbfs_load(bmp_logo_filename(), logo_buffer, 1 * MiB);
  36         if (*logo_size == 0)
  37                 return NULL;
  38
  39         return logo_buffer;
  40 }
  41
  42 void bmp_release_logo(void)
  43 {
  44         if (logo_entry)
  45                 cbmem_entry_remove(logo_entry);
  46         logo_entry = NULL;
  47 }