diff options
| -rw-r--r-- | fel.c | 9 |
1 files changed, 7 insertions, 2 deletions
@@ -623,9 +623,14 @@ uint32_t *aw_backup_and_disable_mmu(feldev_handle *dev, * checks needs to be relaxed). */ - /* Basically, ignore M/Z/I/V/UNK bits and expect no TEX remap */ + /* + * Basically, ignore M/Z/I/V/UNK bits and expect no TEX remap. + * Bits [23:22] are Read-As-One on ARMv7, but Should-Be-Zero + * on ARMv5, so ignore them. + * We need the RES1 bits[18,16,4,3] and CP15BEN[5]. + */ sctlr = aw_get_sctlr(dev, soc_info); - if ((sctlr & ~((0x7 << 11) | (1 << 6) | 1)) != 0x00C50038) + if ((sctlr & ~((0x3 << 22) | (0x7 << 11) | (1 << 6) | 1)) != 0x00050038) pr_fatal("Unexpected SCTLR (%08X)\n", sctlr); if (!(sctlr & 1)) { |