diff options
| author | Patrick Rudolph <patrick.rudolph@9elements.com> | 2018-03-05 09:53:47 +0100 |
|---|---|---|
| committer | David Hendricks <david.hendricks@gmail.com> | 2018-03-23 04:09:50 +0000 |
| commit | 57afc5e0f2309ba9f7fbd171642f04c6da9d9976 (patch) | |
| tree | aeeafda4fee623141e5a8c162f7612b6454918e7 /src/arch/arm64/include/armv8 | |
| parent | 3d9462a07f0250cf628b7874620f9f682b7a020e (diff) | |
arch/arm64/armv8/mmu: Add support for 48bit VA
The VA space needs to be extended to support 48bit, as on Cavium SoCs
the MMIO starts at 1 << 47.
The following changes were done to coreboot and libpayload:
* Use page table lvl 0
* Increase VA bits to 48
* Enable 256TB in MMU controller
* Add additional asserts
Tested on Cavium SoC and two ARM64 Chromebooks.
Change-Id: I89e6a4809b6b725c3945bad7fce82b0dfee7c262
Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com>
Reviewed-on: https://review.coreboot.org/24970
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>
Diffstat (limited to 'src/arch/arm64/include/armv8')
| -rw-r--r-- | src/arch/arm64/include/armv8/arch/mmu.h | 9 |
1 files changed, 4 insertions, 5 deletions
diff --git a/src/arch/arm64/include/armv8/arch/mmu.h b/src/arch/arm64/include/armv8/arch/mmu.h index a8120736fa..f0e551e52d 100644 --- a/src/arch/arm64/include/armv8/arch/mmu.h +++ b/src/arch/arm64/include/armv8/arch/mmu.h @@ -69,7 +69,7 @@ /* XLAT Table Init Attributes */ #define VA_START 0x0 -#define BITS_PER_VA 33 +#define BITS_PER_VA 48 /* Granule size of 4KB is being used */ #define GRANULE_SIZE_SHIFT 12 #define GRANULE_SIZE (1 << GRANULE_SIZE_SHIFT) @@ -77,14 +77,12 @@ #define GRANULE_SIZE_MASK ((1 << GRANULE_SIZE_SHIFT) - 1) #define BITS_RESOLVED_PER_LVL (GRANULE_SIZE_SHIFT - 3) +#define L0_ADDR_SHIFT (GRANULE_SIZE_SHIFT + BITS_RESOLVED_PER_LVL * 3) #define L1_ADDR_SHIFT (GRANULE_SIZE_SHIFT + BITS_RESOLVED_PER_LVL * 2) #define L2_ADDR_SHIFT (GRANULE_SIZE_SHIFT + BITS_RESOLVED_PER_LVL * 1) #define L3_ADDR_SHIFT (GRANULE_SIZE_SHIFT + BITS_RESOLVED_PER_LVL * 0) -#if BITS_PER_VA > L1_ADDR_SHIFT + BITS_RESOLVED_PER_LVL - #error "BITS_PER_VA too large (we don't have L0 table support)" -#endif - +#define L0_ADDR_MASK (((1UL << BITS_RESOLVED_PER_LVL) - 1) << L0_ADDR_SHIFT) #define L1_ADDR_MASK (((1UL << BITS_RESOLVED_PER_LVL) - 1) << L1_ADDR_SHIFT) #define L2_ADDR_MASK (((1UL << BITS_RESOLVED_PER_LVL) - 1) << L2_ADDR_SHIFT) #define L3_ADDR_MASK (((1UL << BITS_RESOLVED_PER_LVL) - 1) << L3_ADDR_SHIFT) @@ -94,6 +92,7 @@ #define L3_XLAT_SIZE (1UL << L3_ADDR_SHIFT) #define L2_XLAT_SIZE (1UL << L2_ADDR_SHIFT) #define L1_XLAT_SIZE (1UL << L1_ADDR_SHIFT) +#define L0_XLAT_SIZE (1UL << L0_ADDR_SHIFT) /* Block indices required for MAIR */ #define BLOCK_INDEX_MEM_DEV_NGNRNE 0 |