iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

CRIS: Additional mmu settings for ARTPEC-3

Browse Source 
Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
This commit is contained in:
Jesper Nilsson 2010-08-02 18:22:09 +02:00
parent cd4f20110c
commit 345c52e079
1 changed files with 40 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

42
arch/cris/arch-v32/kernel/head.S
View File

@ -69,7 +69,13 @@ secondary_cpu_entry: /* Entry point for secondary CPUs */
;;
;; Note; 3 cycles is needed for a bank-select to take effect. Further;
;; bank 1 is the instruction MMU, bank 2 is the data MMU.
#ifndef CONFIG_ETRAX_VCS_SIM
#ifdef CONFIG_CRIS_MACH_ARTPEC3
move.d REG_FIELD(mmu, rw_mm_kbase_hi, base_e, 8) \
| REG_FIELD(mmu, rw_mm_kbase_hi, base_c, 4) \
| REG_FIELD(mmu, rw_mm_kbase_hi, base_d, 5) \
| REG_FIELD(mmu, rw_mm_kbase_hi, base_b, 0xb), $r0
#elif !defined(CONFIG_ETRAX_VCS_SIM)
move.d REG_FIELD(mmu, rw_mm_kbase_hi, base_e, 8) \
| REG_FIELD(mmu, rw_mm_kbase_hi, base_c, 4) \
| REG_FIELD(mmu, rw_mm_kbase_hi, base_b, 0xb), $r0
@ -88,7 +94,39 @@ secondary_cpu_entry: /* Entry point for secondary CPUs */
;; Enable certain page protections and setup linear mapping
;; for f,e,c,b,4,0.
#ifndef CONFIG_ETRAX_VCS_SIM
;; ARTPEC-3:
;; c,d used for linear kernel mapping, up to 512 MB
;; e used for vmalloc
;; f unused, but page mapped to get page faults
;; ETRAX FS:
;; c used for linear kernel mapping, up to 256 MB
;; d used for vmalloc
;; e,f used for memory-mapped NOR flash
#ifdef CONFIG_CRIS_MACH_ARTPEC3
move.d 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) \
| 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) \
| REG_STATE(mmu, rw_mm_cfg, seg_c, linear) \
| REG_STATE(mmu, rw_mm_cfg, seg_b, linear) \
| REG_STATE(mmu, rw_mm_cfg, seg_a, page) \
| REG_STATE(mmu, rw_mm_cfg, seg_9, page) \
| REG_STATE(mmu, rw_mm_cfg, seg_8, page) \
| REG_STATE(mmu, rw_mm_cfg, seg_7, page) \
| REG_STATE(mmu, rw_mm_cfg, seg_6, page) \
| REG_STATE(mmu, rw_mm_cfg, seg_5, page) \
| REG_STATE(mmu, rw_mm_cfg, seg_4, linear) \
| REG_STATE(mmu, rw_mm_cfg, seg_3, page) \
| REG_STATE(mmu, rw_mm_cfg, seg_2, page) \
| REG_STATE(mmu, rw_mm_cfg, seg_1, page) \
| REG_STATE(mmu, rw_mm_cfg, seg_0, linear), $r2
#elif !defined(CONFIG_ETRAX_VCS_SIM)
move.d REG_STATE(mmu, rw_mm_cfg, we, on) \
| REG_STATE(mmu, rw_mm_cfg, acc, on) \
| REG_STATE(mmu, rw_mm_cfg, ex, on) \