diff options
Diffstat (limited to 'arch/cris/arch-v32/mm/init.c')
| -rw-r--r-- | arch/cris/arch-v32/mm/init.c | 23 |
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 caeb921a92ea..0768bc409ca8 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]; |