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author | Lin Ma <lin.ma@caviumnetworks.com> | 2014-06-02 11:45:36 -0700 |
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committer | Lin Ma <lin.ma@caviumnetworks.com> | 2014-06-02 11:45:36 -0700 |
commit | f984ce84bab84c821cc7be76c8362808c375c1c8 (patch) | |
tree | 16736ab8230bcaf0b6a144a7823909cf282d5ca1 /plat | |
parent | e10af77b2873396c9aca6e53326db3ca294f6de4 (diff) | |
download | trusted-firmware-a-f984ce84bab84c821cc7be76c8362808c375c1c8.tar.gz |
Enable mapping higher physical address
Current ATF uses a direct physical-to-virtual mapping, that is, a physical
address is mapped to the same address in the virtual space. For example,
physical address 0x8000_0000 is mapped to 0x8000_0000 virtual. This
approach works fine for FVP as all its physical addresses fall into 0 to
4GB range. But for other platform where all I/O addresses are 48-bit long,
If we follow the same direct mapping, we would need virtual address range
from 0 to 0x8fff_ffff_ffff, which is about 144TB. This requires a
significant amount of memory for MMU tables and it is not necessary to use
that much virtual space in ATF.
The patch is to enable mapping a physical address range to an arbitrary
virtual address range (instead of flat mapping)
Changed "base" to "base_va" and added "base_pa" in mmap_region_t and
modified functions such as mmap_add_region and init_xlation_table etc.
Fixes ARM-software/tf-issues#158
Diffstat (limited to 'plat')
-rw-r--r-- | plat/fvp/aarch64/fvp_common.c | 40 |
1 files changed, 26 insertions, 14 deletions
diff --git a/plat/fvp/aarch64/fvp_common.c b/plat/fvp/aarch64/fvp_common.c index 3a078448c6..41234cba6f 100644 --- a/plat/fvp/aarch64/fvp_common.c +++ b/plat/fvp/aarch64/fvp_common.c @@ -54,17 +54,27 @@ static unsigned long fvp_config[CONFIG_LIMIT]; * configure_mmu_elx() will give the available subset of that, */ const mmap_region_t fvp_mmap[] = { - { TZROM_BASE, TZROM_SIZE, MT_MEMORY | MT_RO | MT_SECURE }, - { TZDRAM_BASE, TZDRAM_SIZE, MT_MEMORY | MT_RW | MT_SECURE }, - { FLASH0_BASE, FLASH0_SIZE, MT_MEMORY | MT_RO | MT_SECURE }, - { FLASH1_BASE, FLASH1_SIZE, MT_MEMORY | MT_RO | MT_SECURE }, - { VRAM_BASE, VRAM_SIZE, MT_MEMORY | MT_RW | MT_SECURE }, - { DEVICE0_BASE, DEVICE0_SIZE, MT_DEVICE | MT_RW | MT_SECURE }, - { NSRAM_BASE, NSRAM_SIZE, MT_MEMORY | MT_RW | MT_NS }, - { DEVICE1_BASE, DEVICE1_SIZE, MT_DEVICE | MT_RW | MT_SECURE }, + { TZROM_BASE, TZROM_BASE, TZROM_SIZE, + MT_MEMORY | MT_RO | MT_SECURE }, + { TZDRAM_BASE, TZDRAM_BASE, TZDRAM_SIZE, + MT_MEMORY | MT_RW | MT_SECURE }, + { FLASH0_BASE, FLASH0_BASE, FLASH0_SIZE, + MT_MEMORY | MT_RO | MT_SECURE }, + { FLASH1_BASE, FLASH1_BASE, FLASH1_SIZE, + MT_MEMORY | MT_RO | MT_SECURE }, + { VRAM_BASE, VRAM_BASE, VRAM_SIZE, + MT_MEMORY | MT_RW | MT_SECURE }, + { DEVICE0_BASE, DEVICE0_BASE, DEVICE0_SIZE, + MT_DEVICE | MT_RW | MT_SECURE }, + { NSRAM_BASE, NSRAM_BASE, NSRAM_SIZE, + MT_MEMORY | MT_RW | MT_NS }, + { DEVICE1_BASE, DEVICE1_BASE, DEVICE1_SIZE, + MT_DEVICE | MT_RW | MT_SECURE }, /* 2nd GB as device for now...*/ - { 0x40000000, 0x40000000, MT_DEVICE | MT_RW | MT_SECURE }, - { DRAM1_BASE, DRAM1_SIZE, MT_MEMORY | MT_RW | MT_NS }, + { 0x40000000, 0x40000000, 0x40000000, + MT_DEVICE | MT_RW | MT_SECURE }, + { DRAM1_BASE, DRAM1_BASE, DRAM1_SIZE, + MT_MEMORY | MT_RW | MT_NS }, {0} }; @@ -73,19 +83,21 @@ const mmap_region_t fvp_mmap[] = { * the platform memory map & initialize the mmu, for the given exception level ******************************************************************************/ #define DEFINE_CONFIGURE_MMU_EL(_el) \ - void fvp_configure_mmu_el##_el(unsigned long total_base, \ + void fvp_configure_mmu_el##_el(unsigned long total_base, \ unsigned long total_size, \ unsigned long ro_start, \ unsigned long ro_limit, \ unsigned long coh_start, \ unsigned long coh_limit) \ { \ - mmap_add_region(total_base, \ + mmap_add_region(total_base, total_base, \ total_size, \ MT_MEMORY | MT_RW | MT_SECURE); \ - mmap_add_region(ro_start, ro_limit - ro_start, \ + mmap_add_region(ro_start, ro_start, \ + ro_limit - ro_start, \ MT_MEMORY | MT_RO | MT_SECURE); \ - mmap_add_region(coh_start, coh_limit - coh_start, \ + mmap_add_region(coh_start, coh_start, \ + coh_limit - coh_start, \ MT_DEVICE | MT_RW | MT_SECURE); \ mmap_add(fvp_mmap); \ init_xlat_tables(); \ |