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authorJesper Nilsson <jesper.nilsson@axis.com>2010-08-03 18:01:06 +0200
committerJesper Nilsson <jesper.nilsson@axis.com>2010-08-04 13:02:31 +0200
commit7ec280c52ca5aa1448cd16ae77dd44755413db2b (patch)
tree1c17d3986dec9d1482e001d258796025daa049e7
parent98560bd83e73b5c0cf38e3d984892f46a405a172 (diff)
CRIS: Update for ARTPEC-3
Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
-rw-r--r--arch/cris/arch-v32/mm/init.c23
1 files changed, 18 insertions, 5 deletions
diff --git a/arch/cris/arch-v32/mm/init.c b/arch/cris/arch-v32/mm/init.c
index caeb921a92e..0768bc409ca 100644
--- a/arch/cris/arch-v32/mm/init.c
+++ b/arch/cris/arch-v32/mm/init.c
@@ -27,8 +27,7 @@ extern void tlb_init(void);
* at kseg_4 thus the ksegs are set up again. Also clear the TLB and do various
* other paging stuff.
*/
-void __init
-cris_mmu_init(void)
+void __init cris_mmu_init(void)
{
unsigned long mmu_config;
unsigned long mmu_kbase_hi;
@@ -55,14 +54,23 @@ cris_mmu_init(void)
/* Initialise the TLB. Function found in tlb.c. */
tlb_init();
- /* Enable exceptions and initialize the kernel segments. */
+ /*
+ * Enable exceptions and initialize the kernel segments.
+ * See head.S for differences between ARTPEC-3 and ETRAX FS.
+ */
mmu_config = ( REG_STATE(mmu, rw_mm_cfg, we, on) |
REG_STATE(mmu, rw_mm_cfg, acc, on) |
REG_STATE(mmu, rw_mm_cfg, ex, on) |
REG_STATE(mmu, rw_mm_cfg, inv, on) |
+#ifdef CONFIG_CRIS_MACH_ARTPEC3
+ REG_STATE(mmu, rw_mm_cfg, seg_f, page) |
+ REG_STATE(mmu, rw_mm_cfg, seg_e, page) |
+ REG_STATE(mmu, rw_mm_cfg, seg_d, linear) |
+#else
REG_STATE(mmu, rw_mm_cfg, seg_f, linear) |
REG_STATE(mmu, rw_mm_cfg, seg_e, linear) |
REG_STATE(mmu, rw_mm_cfg, seg_d, page) |
+#endif
REG_STATE(mmu, rw_mm_cfg, seg_c, linear) |
REG_STATE(mmu, rw_mm_cfg, seg_b, linear) |
#ifndef CONFIG_ETRAX_VCS_SIM
@@ -81,9 +89,15 @@ cris_mmu_init(void)
REG_STATE(mmu, rw_mm_cfg, seg_1, page) |
REG_STATE(mmu, rw_mm_cfg, seg_0, page));
+ /* See head.S for differences between ARTPEC-3 and ETRAX FS. */
mmu_kbase_hi = ( REG_FIELD(mmu, rw_mm_kbase_hi, base_f, 0x0) |
+#ifdef CONFIG_CRIS_MACH_ARTPEC3
+ REG_FIELD(mmu, rw_mm_kbase_hi, base_e, 0x0) |
+ REG_FIELD(mmu, rw_mm_kbase_hi, base_d, 0x5) |
+#else
REG_FIELD(mmu, rw_mm_kbase_hi, base_e, 0x8) |
REG_FIELD(mmu, rw_mm_kbase_hi, base_d, 0x0) |
+#endif
REG_FIELD(mmu, rw_mm_kbase_hi, base_c, 0x4) |
REG_FIELD(mmu, rw_mm_kbase_hi, base_b, 0xb) |
#ifndef CONFIG_ETRAX_VCS_SIM
@@ -129,8 +143,7 @@ cris_mmu_init(void)
SUPP_REG_WR(RW_GC_CFG, 0xf); /* IMMU, DMMU, ICache, DCache on */
}
-void __init
-paging_init(void)
+void __init paging_init(void)
{
int i;
unsigned long zones_size[MAX_NR_ZONES];