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| author | Minghuan Lian <Minghuan.Lian@freescale.com> | 2015-01-21 17:29:17 +0800 |
|---|---|---|
| committer | York Sun <yorksun@freescale.com> | 2015-02-24 13:10:31 -0800 |
| commit | 636ef95605560a45cd9be21c6340d2bca33352ed (patch) | |
| tree | 2afc2dc739ce3708be20c99107b7d96cd27608a2 /arch/arm/include | |
| parent | 60d517369cca0ff0352b3c9a023cd3e18e195c38 (diff) | |
| download | talos-obmc-uboot-636ef95605560a45cd9be21c6340d2bca33352ed.tar.gz talos-obmc-uboot-636ef95605560a45cd9be21c6340d2bca33352ed.zip | |
arm/ls102xa: create TLB to map PCIe region
LS1021A's PCIe1 region begins 0x40_00000000; PCIe2 begins
0x48_00000000. In order to access PCIe device, we must create
TLB to map the 40bit physical address to 32bit virtual address.
This patch will enable MMU after DDR is available and creates MMU
table in DRAM to map all 4G space; then, re-use the reserved space
to map PCIe region. The following the mapping layout.
VA mapping:
------- <---- 0GB
| |
| |
|-------| <---- 0x24000000
|///////| ===> 192MB VA map for PCIe1 with offset 0x40_0000_0000
|-------| <---- 0x300000000
| |
|-------| <---- 0x34000000
|///////| ===> 192MB VA map for PCIe2 with offset 0x48_0000_0000
|-------| <---- 0x40000000
| |
|-------| <---- 0x80000000 DDR0 space start
|\\\\\\\|
|\\\\\\\| ===> 2GB VA map for 2GB DDR0 Memory space
|\\\\\\\|
------- <---- 4GB DDR0 space end
Signed-off-by: Minghuan Lian <Minghuan.Lian@freescale.com>
Reviewed-by: York Sun <yorksun@freescale.com>
Diffstat (limited to 'arch/arm/include')
| -rw-r--r-- | arch/arm/include/asm/arch-ls102xa/config.h | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/arch/arm/include/asm/arch-ls102xa/config.h b/arch/arm/include/asm/arch-ls102xa/config.h index 791551841c..cfabdc605f 100644 --- a/arch/arm/include/asm/arch-ls102xa/config.h +++ b/arch/arm/include/asm/arch-ls102xa/config.h @@ -61,6 +61,20 @@ #define CONFIG_SYS_PCIE1_ADDR (CONFIG_SYS_IMMR + 0x2400000) #define CONFIG_SYS_PCIE2_ADDR (CONFIG_SYS_IMMR + 0x2500000) +#define CONFIG_SYS_PCIE1_PHYS_BASE 0x4000000000ULL +#define CONFIG_SYS_PCIE2_PHYS_BASE 0x4800000000ULL +#define CONFIG_SYS_PCIE1_VIRT_ADDR 0x24000000UL +#define CONFIG_SYS_PCIE2_VIRT_ADDR 0x34000000UL +#define CONFIG_SYS_PCIE_MMAP_SIZE (192 * 1024 * 1024) /* 192M */ +/* + * TLB will map VIRT_ADDR to (PHYS_BASE + VIRT_ADDR) + * So 40bit PCIe PHY addr can directly be converted to a 32bit virtual addr. + */ +#define CONFIG_SYS_PCIE1_PHYS_ADDR (CONFIG_SYS_PCIE1_PHYS_BASE + \ + CONFIG_SYS_PCIE1_VIRT_ADDR) +#define CONFIG_SYS_PCIE2_PHYS_ADDR (CONFIG_SYS_PCIE2_PHYS_BASE + \ + CONFIG_SYS_PCIE2_VIRT_ADDR) + #ifdef CONFIG_DDR_SPD #define CONFIG_SYS_FSL_DDR_BE #define CONFIG_VERY_BIG_RAM |
