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| author | Vikas Manocha <vikas.manocha@st.com> | 2017-05-03 23:38:57 (GMT) |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2017-05-12 12:37:08 (GMT) |
| commit | 624b7101ee4c3673504812862d1414b1409a2c9f (patch) | |
| tree | 362f64ab03284e9a30402d433cfe566c1d85b4d4 /arch/arm/mach-stm32 | |
| parent | 33b78476d2bfd2660e376ea743bff5dc210971ca (diff) | |
| download | u-boot-624b7101ee4c3673504812862d1414b1409a2c9f.tar.xz | |
stm32f7: configure mpu valid for f7 family
This configuration should be valid for all F7 family devices in general.
Here is the regions info:
- Region0 : 4GB : cacheable & executable.
- Region1 : 512MB : text area : strogly ordered & executable.
- Region2 : 512MB : peripherals : device memory & non-executable.
- Region3 : 512MB : peripherals : device memory & non-executable.
- Region4 : 512MB : cortexM area: strongly ordered & non-executable.
Higher region number overrides the lower region configuration.
Signed-off-by: Vikas Manocha <vikas.manocha@st.com>
Diffstat (limited to 'arch/arm/mach-stm32')
| -rw-r--r-- | arch/arm/mach-stm32/stm32f7/soc.c | 15 |
1 files changed, 12 insertions, 3 deletions
diff --git a/arch/arm/mach-stm32/stm32f7/soc.c b/arch/arm/mach-stm32/stm32f7/soc.c index 3586133..74a9350 100644 --- a/arch/arm/mach-stm32/stm32f7/soc.c +++ b/arch/arm/mach-stm32/stm32f7/soc.c @@ -19,10 +19,19 @@ int arch_cpu_init(void) { struct mpu_region_config stm32_region_config[] = { { 0x00000000, REGION_0, XN_DIS, PRIV_RW_USR_RW, - STRONG_ORDER, REGION_4GB }, + O_I_WB_RD_WR_ALLOC, REGION_4GB }, - { 0xC0000000, REGION_1, XN_DIS, PRIV_RW_USR_RW, - O_I_WB_RD_WR_ALLOC, REGION_8MB }, + { 0x00000000, REGION_1, XN_DIS, PRIV_RW_USR_RW, + STRONG_ORDER, REGION_512MB }, + + { 0x40000000, REGION_2, XN_EN, PRIV_RW_USR_RW, + DEVICE_NON_SHARED, REGION_512MB }, + + { 0xA0000000, REGION_3, XN_EN, PRIV_RW_USR_RW, + DEVICE_NON_SHARED, REGION_512MB }, + + { 0xE0000000, REGION_4, XN_EN, PRIV_RW_USR_RW, + STRONG_ORDER, REGION_512MB }, }; disable_mpu(); |