platform: msm8916: Correct the MMU Mappings for MSM8916.
Currently MMU is mapping all the RAM partitions populated
in the SMEM. This can cause XPU violation for protected
regions. Hence map only the regions mentioned in the MMU
table.
CRs-Fixed: 677067
Change-Id: Iad74b03895a6270f948af7dd000c7ac1b6626375
diff --git a/platform/msm8916/platform.c b/platform/msm8916/platform.c
index 0820a2c..1eb9749 100644
--- a/platform/msm8916/platform.c
+++ b/platform/msm8916/platform.c
@@ -52,7 +52,7 @@
MMU_MEMORY_AP_READ_WRITE | MMU_MEMORY_XN)
/* IMEM memory - cacheable, write through */
-#define IMEM_MEMORY (MMU_MEMORY_TYPE_NORMAL_WRITE_THROUGH | \
+#define COMMON_MEMORY (MMU_MEMORY_TYPE_NORMAL_WRITE_THROUGH | \
MMU_MEMORY_AP_READ_WRITE | MMU_MEMORY_XN)
static mmu_section_t mmu_section_table[] = {
@@ -60,7 +60,10 @@
{ MEMBASE, MEMBASE, (MEMSIZE / MB), LK_MEMORY},
{ MSM_IOMAP_BASE, MSM_IOMAP_BASE, MSM_IOMAP_SIZE, IOMAP_MEMORY},
{ A53_SS_BASE, A53_SS_BASE, A53_SS_SIZE, IOMAP_MEMORY},
- { SYSTEM_IMEM_BASE, SYSTEM_IMEM_BASE, 1, IMEM_MEMORY},
+ { SYSTEM_IMEM_BASE, SYSTEM_IMEM_BASE, 1, COMMON_MEMORY},
+ { MSM_SHARED_BASE, MSM_SHARED_BASE, 1, COMMON_MEMORY},
+ { BASE_ADDR, BASE_ADDR, 90, COMMON_MEMORY},
+ { SCRATCH_ADDR, SCRATCH_ADDR, 256, COMMON_MEMORY},
};
static struct smem_ram_ptable ram_ptable;
@@ -114,39 +117,6 @@
uint32_t i;
uint32_t sections;
uint32_t table_size = ARRAY_SIZE(mmu_section_table);
- ram_partition ptn_entry;
- uint32_t len = 0;
-
- ASSERT(smem_ram_ptable_init_v1());
-
- len = smem_get_ram_ptable_len();
-
- /* Configure the MMU page entries for SDRAM and IMEM memory read
- from the smem ram table*/
- for(i = 0; i < len; i++)
- {
- smem_get_ram_ptable_entry(&ptn_entry, i);
- if(ptn_entry.type == SYS_MEMORY)
- {
- if((ptn_entry.category == SDRAM) ||
- (ptn_entry.category == IMEM))
- {
- /* Check to ensure that start address is 1MB aligned */
- ASSERT((ptn_entry.start & (MB-1)) == 0);
-
- sections = (ptn_entry.size) / MB;
- while(sections--)
- {
- arm_mmu_map_section(ptn_entry.start +
- sections * MB,
- ptn_entry.start +
- sections * MB,
- (MMU_MEMORY_TYPE_NORMAL_WRITE_THROUGH | \
- MMU_MEMORY_AP_READ_WRITE | MMU_MEMORY_XN));
- }
- }
- }
- }
/* Configure the MMU page entries for memory read from the
mmu_section_table */