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mediatek: mt8183: protect 4GB~8GB dram memory 

The offset there is the virtual address space on the bus side (1-9GB for 8GB RAM),
and that emi_mpu_set_region_protection will translate to the physical memory space (0-8GB).

8GB is 33-bit (the memory bus width is 33-bit on this platform),
so 0x23FFFFFFFUL-EMI_PHY_OFFSET = 0x1_FFFF_FFFF.

Change-Id: I7be4759ed7546f7e15a5868b6f08988928c34075
Signed-off-by: Xi Chen <xixi.chen@mediatek.com>
This commit is contained in:
Xi Chen 2020-02-14 10:57:14 +08:00 committed by kenny liang
parent 572fcdd547
commit 95d3c46a2f
1 changed files with 2 additions and 8 deletions
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10
plat/mediatek/mt8183/drivers/emi_mpu/emi_mpu.c
View File

@ -138,15 +138,9 @@ void emi_mpu_init(void)
(FORBIDDEN << 6));
emi_mpu_set_region_protection(0x52900000UL, 0x5FFFFFFFUL, 2,
(FORBIDDEN << 3 | FORBIDDEN << 6));
emi_mpu_set_region_protection(0x60000000UL, 0x7FFFFFFFUL, 3,
emi_mpu_set_region_protection(0x60000000UL, 0xFFFFFFFFUL, 3,
(FORBIDDEN << 3 | FORBIDDEN << 6));
emi_mpu_set_region_protection(0x80000000UL, 0x9FFFFFFFUL, 4,
(FORBIDDEN << 3 | FORBIDDEN << 6));
emi_mpu_set_region_protection(0xA0000000UL, 0xBFFFFFFFUL, 5,
(FORBIDDEN << 3 | FORBIDDEN << 6));
emi_mpu_set_region_protection(0xC0000000UL, 0xDFFFFFFFUL, 6,
(FORBIDDEN << 3 | FORBIDDEN << 6));
emi_mpu_set_region_protection(0xE0000000UL, 0xFFFFFFFFUL, 7,
emi_mpu_set_region_protection(0x100000000UL, 0x23FFFFFFFUL, 4,
(FORBIDDEN << 3 | FORBIDDEN << 6));
dump_emi_mpu_regions();
}