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authorBarry Song <barry.song@analog.com>2009-12-02 02:50:43 +0000
committerMike Frysinger <vapier@gentoo.org>2009-12-15 00:15:54 -0500
commite187837b6f23c99c219ffc1d42aa18567f6e299d (patch)
treeebf6dad4112689aca936221027115328fdf4456d /arch/blackfin/kernel/cplb-mpu
parentd45e8db1b20c510a189d769d877af2e8e9df985f (diff)
downloadop-kernel-dev-e187837b6f23c99c219ffc1d42aa18567f6e299d.zip
op-kernel-dev-e187837b6f23c99c219ffc1d42aa18567f6e299d.tar.gz
Blackfin: MPU: support XIP in async flash memory
The NOMPU code already supported executing in the async banks, so this brings the MPU code in line. Signed-off-by: Barry Song <barry.song@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Diffstat (limited to 'arch/blackfin/kernel/cplb-mpu')
-rw-r--r--arch/blackfin/kernel/cplb-mpu/cplbmgr.c13
1 files changed, 9 insertions, 4 deletions
diff --git a/arch/blackfin/kernel/cplb-mpu/cplbmgr.c b/arch/blackfin/kernel/cplb-mpu/cplbmgr.c
index 69e0e53..930c01c 100644
--- a/arch/blackfin/kernel/cplb-mpu/cplbmgr.c
+++ b/arch/blackfin/kernel/cplb-mpu/cplbmgr.c
@@ -113,11 +113,11 @@ static noinline int dcplb_miss(unsigned int cpu)
addr = L2_START;
d_data = L2_DMEMORY;
} else if (addr >= physical_mem_end) {
- if (addr >= ASYNC_BANK0_BASE && addr < ASYNC_BANK3_BASE + ASYNC_BANK3_SIZE
- && (status & FAULT_USERSUPV)) {
- addr &= ~0x3fffff;
+ if (addr >= ASYNC_BANK0_BASE && addr < ASYNC_BANK3_BASE + ASYNC_BANK3_SIZE) {
+ addr &= ~(4 * 1024 * 1024 - 1);
d_data &= ~PAGE_SIZE_4KB;
d_data |= PAGE_SIZE_4MB;
+ d_data |= CPLB_USER_RD | CPLB_USER_WR;
} else if (addr >= BOOT_ROM_START && addr < BOOT_ROM_START + BOOT_ROM_LENGTH
&& (status & (FAULT_RW | FAULT_USERSUPV)) == FAULT_USERSUPV) {
addr &= ~(1 * 1024 * 1024 - 1);
@@ -203,7 +203,12 @@ static noinline int icplb_miss(unsigned int cpu)
addr = L2_START;
i_data = L2_IMEMORY;
} else if (addr >= physical_mem_end) {
- if (addr >= BOOT_ROM_START && addr < BOOT_ROM_START + BOOT_ROM_LENGTH
+ if (addr >= ASYNC_BANK0_BASE && addr < ASYNC_BANK3_BASE + ASYNC_BANK3_SIZE) {
+ addr &= ~(4 * 1024 * 1024 - 1);
+ i_data &= ~PAGE_SIZE_4KB;
+ i_data |= PAGE_SIZE_4MB;
+ i_data |= CPLB_USER_RD;
+ } else 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;
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