diff options
Diffstat (limited to 'src/target/armv4_5_mmu.c')
-rw-r--r-- | src/target/armv4_5_mmu.c | 27 |
1 files changed, 19 insertions, 8 deletions
diff --git a/src/target/armv4_5_mmu.c b/src/target/armv4_5_mmu.c index fc1dde75..6990d13f 100644 --- a/src/target/armv4_5_mmu.c +++ b/src/target/armv4_5_mmu.c @@ -26,15 +26,18 @@ #include "armv4_5_mmu.h" -uint32_t armv4_5_mmu_translate_va(struct target *target, struct armv4_5_mmu_common *armv4_5_mmu, uint32_t va, int *type, uint32_t *cb, int *domain, uint32_t *ap) +int armv4_5_mmu_translate_va(struct target *target, struct armv4_5_mmu_common *armv4_5_mmu, uint32_t va, int *type, uint32_t *cb, int *domain, uint32_t *ap, uint32_t *val) { uint32_t first_lvl_descriptor = 0x0; uint32_t second_lvl_descriptor = 0x0; uint32_t ttb = armv4_5_mmu->get_ttb(target); + int retval; - armv4_5_mmu_read_physical(target, armv4_5_mmu, + retval = armv4_5_mmu_read_physical(target, armv4_5_mmu, (ttb & 0xffffc000) | ((va & 0xfff00000) >> 18), 4, 1, (uint8_t*)&first_lvl_descriptor); + if (retval != ERROR_OK) + return retval; first_lvl_descriptor = target_buffer_get_u32(target, (uint8_t*)&first_lvl_descriptor); LOG_DEBUG("1st lvl desc: %8.8" PRIx32 "", first_lvl_descriptor); @@ -62,22 +65,27 @@ uint32_t armv4_5_mmu_translate_va(struct target *target, struct armv4_5_mmu_comm *type = ARMV4_5_SECTION; *cb = (first_lvl_descriptor & 0xc) >> 2; *ap = (first_lvl_descriptor & 0xc00) >> 10; - return (first_lvl_descriptor & 0xfff00000) | (va & 0x000fffff); + *val = (first_lvl_descriptor & 0xfff00000) | (va & 0x000fffff); + return ERROR_OK; } if ((first_lvl_descriptor & 0x3) == 1) { /* coarse page table */ - armv4_5_mmu_read_physical(target, armv4_5_mmu, + retval = armv4_5_mmu_read_physical(target, armv4_5_mmu, (first_lvl_descriptor & 0xfffffc00) | ((va & 0x000ff000) >> 10), 4, 1, (uint8_t*)&second_lvl_descriptor); + if (retval != ERROR_OK) + return retval; } else if ((first_lvl_descriptor & 0x3) == 3) { /* fine page table */ - armv4_5_mmu_read_physical(target, armv4_5_mmu, + retval = armv4_5_mmu_read_physical(target, armv4_5_mmu, (first_lvl_descriptor & 0xfffff000) | ((va & 0x000ffc00) >> 8), 4, 1, (uint8_t*)&second_lvl_descriptor); + if (retval != ERROR_OK) + return retval; } second_lvl_descriptor = target_buffer_get_u32(target, (uint8_t*)&second_lvl_descriptor); @@ -99,7 +107,8 @@ uint32_t armv4_5_mmu_translate_va(struct target *target, struct armv4_5_mmu_comm /* large page descriptor */ *type = ARMV4_5_LARGE_PAGE; *ap = (second_lvl_descriptor & 0xff0) >> 4; - return (second_lvl_descriptor & 0xffff0000) | (va & 0x0000ffff); + *val = (second_lvl_descriptor & 0xffff0000) | (va & 0x0000ffff); + return ERROR_OK; } if ((second_lvl_descriptor & 0x3) == 2) @@ -107,7 +116,8 @@ uint32_t armv4_5_mmu_translate_va(struct target *target, struct armv4_5_mmu_comm /* small page descriptor */ *type = ARMV4_5_SMALL_PAGE; *ap = (second_lvl_descriptor & 0xff0) >> 4; - return (second_lvl_descriptor & 0xfffff000) | (va & 0x00000fff); + *val = (second_lvl_descriptor & 0xfffff000) | (va & 0x00000fff); + return ERROR_OK; } if ((second_lvl_descriptor & 0x3) == 3) @@ -115,7 +125,8 @@ uint32_t armv4_5_mmu_translate_va(struct target *target, struct armv4_5_mmu_comm /* tiny page descriptor */ *type = ARMV4_5_TINY_PAGE; *ap = (second_lvl_descriptor & 0x30) >> 4; - return (second_lvl_descriptor & 0xfffffc00) | (va & 0x000003ff); + *val = (second_lvl_descriptor & 0xfffffc00) | (va & 0x000003ff); + return ERROR_OK; } /* should not happen */ |