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-rw-r--r--arch/powerpc/cpu/mpc85xx/tlb.c12
-rw-r--r--arch/powerpc/include/asm/processor.h6
2 files changed, 14 insertions, 4 deletions
diff --git a/arch/powerpc/cpu/mpc85xx/tlb.c b/arch/powerpc/cpu/mpc85xx/tlb.c
index 01a3561..80ad04a 100644
--- a/arch/powerpc/cpu/mpc85xx/tlb.c
+++ b/arch/powerpc/cpu/mpc85xx/tlb.c
@@ -252,16 +252,20 @@ setup_ddr_tlbs_phys(phys_addr_t p_addr, unsigned int memsize_in_meg)
unsigned int tlb_size;
unsigned int wimge = 0;
unsigned int ram_tlb_address = (unsigned int)CONFIG_SYS_DDR_SDRAM_BASE;
- unsigned int max_cam = (mfspr(SPRN_TLB1CFG) >> 16) & 0xf;
+ unsigned int max_cam;
u64 size, memsize = (u64)memsize_in_meg << 20;
#ifdef CONFIG_SYS_PPC_DDR_WIMGE
wimge = CONFIG_SYS_PPC_DDR_WIMGE;
#endif
size = min(memsize, CONFIG_MAX_MEM_MAPPED);
-
- /* Convert (4^max) kB to (2^max) bytes */
- max_cam = max_cam * 2 + 10;
+ if ((mfspr(SPRN_MMUCFG) & MMUCFG_MAVN) == MMUCFG_MAVN_V1) {
+ /* Convert (4^max) kB to (2^max) bytes */
+ max_cam = ((mfspr(SPRN_TLB1CFG) >> 16) & 0xf) * 2 + 10;
+ } else {
+ /* Convert (2^max) kB to (2^max) bytes */
+ max_cam = __ilog2(mfspr(SPRN_TLB1PS)) + 10;
+ }
for (i = 0; size && i < 8; i++) {
int ram_tlb_index = find_free_tlbcam();
diff --git a/arch/powerpc/include/asm/processor.h b/arch/powerpc/include/asm/processor.h
index 1b96b84..4e32639 100644
--- a/arch/powerpc/include/asm/processor.h
+++ b/arch/powerpc/include/asm/processor.h
@@ -513,7 +513,13 @@
#define SPRN_TLB0CFG 0x2B0 /* TLB 0 Config Register */
#define SPRN_TLB1CFG 0x2B1 /* TLB 1 Config Register */
+#define SPRN_TLB0PS 0x158 /* TLB 0 Page Size Register */
+#define SPRN_TLB1PS 0x159 /* TLB 1 Page Size Register */
#define SPRN_MMUCSR0 0x3f4 /* MMU control and status register 0 */
+#define SPRN_MMUCFG 0x3F7 /* MMU Configuration Register */
+#define MMUCFG_MAVN 0x00000003 /* MMU Architecture Version Number */
+#define MMUCFG_MAVN_V1 0x00000000 /* v1.0 */
+#define MMUCFG_MAVN_V2 0x00000001 /* v2.0 */
#define SPRN_MAS0 0x270 /* MMU Assist Register 0 */
#define SPRN_MAS1 0x271 /* MMU Assist Register 1 */
#define SPRN_MAS2 0x272 /* MMU Assist Register 2 */