diff options
| -rw-r--r-- | util/ifdtool/ifdtool.c | 70 |
1 files changed, 60 insertions, 10 deletions
diff --git a/util/ifdtool/ifdtool.c b/util/ifdtool/ifdtool.c index 7d69bcf9ff7b..99a83e5d127e 100644 --- a/util/ifdtool/ifdtool.c +++ b/util/ifdtool/ifdtool.c @@ -1329,6 +1329,36 @@ static int check_region(const struct frba *frba, unsigned int region_type) return !!((region.base < region.limit) && (region.size > 0)); } +/* + * Platforms from CNL onwards support up to 16 flash regions, not 12. The + * permissions for regions [15:12] are stored in extended region read/write + * access fields in the FLMSTR registers. + * + * FLMSTR with extended regions: + * 31:20 Region Write Access + * 19:8 Region Read Access + * 7:4 Extended Region Write Access + * 3:0 Extended Region Read Access + * + * FLMSTR without extended regions: + * 31:20 Region Write Access + * 19:8 Region Read Access + * 7:0 Reserved + */ +static bool platform_has_extended_regions(void) +{ + switch (platform) { + case PLATFORM_CNL: + case PLATFORM_JSL: + case PLATFORM_TGL: + case PLATFORM_ADL: + case PLATFORM_MTL: + return true; + default: + return false; + } +} + static void lock_descriptor(const char *filename, char *image, int size) { int wr_shift, rd_shift; @@ -1341,11 +1371,21 @@ static void lock_descriptor(const char *filename, char *image, int size) wr_shift = FLMSTR_WR_SHIFT_V2; rd_shift = FLMSTR_RD_SHIFT_V2; - /* Clear non-reserved bits */ - fmba->flmstr1 &= 0xff; - fmba->flmstr2 &= 0xff; - fmba->flmstr3 &= 0xff; - fmba->flmstr5 &= 0xff; + /* + * Clear all read/write access bits. See comment on + * platform_has_extended_regions() for bitfields. + */ + if (platform_has_extended_regions()) { + fmba->flmstr1 = 0; + fmba->flmstr2 = 0; + fmba->flmstr3 = 0; + fmba->flmstr5 = 0; + } else { + fmba->flmstr1 &= 0xff; + fmba->flmstr2 &= 0xff; + fmba->flmstr3 &= 0xff; + fmba->flmstr5 &= 0xff; + } } else { wr_shift = FLMSTR_WR_SHIFT_V1; rd_shift = FLMSTR_RD_SHIFT_V1; @@ -1482,11 +1522,21 @@ static void unlock_descriptor(const char *filename, char *image, int size) exit(EXIT_FAILURE); if (ifd_version >= IFD_VERSION_2) { - /* Access bits for each region are read: 19:8 write: 31:20 */ - fmba->flmstr1 = 0xffffff00 | (fmba->flmstr1 & 0xff); - fmba->flmstr2 = 0xffffff00 | (fmba->flmstr2 & 0xff); - fmba->flmstr3 = 0xffffff00 | (fmba->flmstr3 & 0xff); - fmba->flmstr5 = 0xffffff00 | (fmba->flmstr5 & 0xff); + /* + * Set all read/write access bits. See comment on + * platform_has_extended_regions() for bitfields. + */ + if (platform_has_extended_regions()) { + fmba->flmstr1 = 0xffffffff; + fmba->flmstr2 = 0xffffffff; + fmba->flmstr3 = 0xffffffff; + fmba->flmstr5 = 0xffffffff; + } else { + fmba->flmstr1 = 0xffffff00 | (fmba->flmstr1 & 0xff); + fmba->flmstr2 = 0xffffff00 | (fmba->flmstr2 & 0xff); + fmba->flmstr3 = 0xffffff00 | (fmba->flmstr3 & 0xff); + fmba->flmstr5 = 0xffffff00 | (fmba->flmstr5 & 0xff); + } } else { fmba->flmstr1 = 0xffff0000; fmba->flmstr2 = 0xffff0000; |