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| author | Sergey Temerkhanov <s.temerkhanov@gmail.com> | 2015-10-14 09:55:45 -0700 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2016-01-19 22:25:36 +0000 |
| commit | 94f7ff36e521674a02145a3ff04b659c40122ba3 (patch) | |
| tree | 34b1fa03bdd7b9581994ec71f6c85ce5da114622 /arch/arm/include/asm/global_data.h | |
| parent | ba5648cd91b010a9288798472a6d51b137fff89d (diff) | |
| download | u-boot-94f7ff36e521674a02145a3ff04b659c40122ba3.tar.gz | |
armv8: New MMU setup code allowing to use 48+ bits PA/VA
This patch adds code which sets up 2-level page tables on ARM64 thus
extending available VA space. CPUs implementing 64k translation
granule are able to use direct PA-VA mapping of the whole 48 bit
address space.
It also adds the ability to reset the SCTRL register at the very beginning
of execution to avoid interference from stale mappings set up by early
firmware/loaders/etc.
Signed-off-by: Sergey Temerkhanov <s.temerkhanov@gmail.com>
Signed-off-by: Radha Mohan Chintakuntla <rchintakuntla@cavium.com>
Diffstat (limited to 'arch/arm/include/asm/global_data.h')
| -rw-r--r-- | arch/arm/include/asm/global_data.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/arm/include/asm/global_data.h b/arch/arm/include/asm/global_data.h index bd27281e79..dcfa0985b5 100644 --- a/arch/arm/include/asm/global_data.h +++ b/arch/arm/include/asm/global_data.h @@ -38,6 +38,9 @@ struct arch_global_data { unsigned long long timer_reset_value; #if !(defined(CONFIG_SYS_ICACHE_OFF) && defined(CONFIG_SYS_DCACHE_OFF)) unsigned long tlb_addr; +#if defined(CONFIG_SYS_FULL_VA) + unsigned long pmd_addr[CONFIG_SYS_PTL1_ENTRIES]; +#endif unsigned long tlb_size; #endif |