[Blackfin] arch: add implicit icplb for the bootrom so we can use the utility functions in the kernel

Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>

1 files changed, 8 insertions, 2 deletions

diff --git a/arch/blackfin/kernel/cplb-mpu/cplbmgr.c b/arch/blackfin/kernel/cplb-mpu/cplbmgr.c
index 3b165bbe90fa..44bbfe26ce49 100644
--- a/arch/blackfin/kernel/cplb-mpu/cplbmgr.c
+++ b/arch/blackfin/kernel/cplb-mpu/cplbmgr.c
@@ -165,7 +165,7 @@ static noinline int dcplb_miss(void)
                     && (status & (FAULT_RW | FAULT_USERSUPV)) == FAULT_USERSUPV) {
                         addr &= ~(1 * 1024 * 1024 - 1);
                         d_data &= ~PAGE_SIZE_4KB;
-                        d_data |= PAGE_SIZE_1MB | CPLB_USER_RD;
+                        d_data |= PAGE_SIZE_1MB;
                 } else
                         return CPLB_PROT_VIOL;
         } else if (addr >= _ramend) {
@@ -243,7 +243,13 @@ static noinline int icplb_miss(void)
 #endif
 
         if (addr >= physical_mem_end) {
-            return CPLB_PROT_VIOL;
+                if (addr >= BOOT_ROM_START && addr < BOOT_ROM_START + BOOT_ROM_LENGTH
+                    && (status & FAULT_USERSUPV)) {
+                        addr &= ~(1 * 1024 * 1024 - 1);
+                        i_data &= ~PAGE_SIZE_4KB;
+                        i_data |= PAGE_SIZE_1MB;
+                } else
+                    return CPLB_PROT_VIOL;
         } else if (addr >= _ramend) {
                 i_data |= CPLB_USER_RD;
         } else {