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mach-stm32: Add MPU region for spi-nor memory mapped region

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The Quad-SPI interface is able to manage up to 256Mbytes Flash
memory starting from 0x90000000 to 0x9FFFFFFF in the memory
mapped mode.
Add a dedicated MPU region into stm32_region_config.

See application note AN4760 available at www.st.com

Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
This commit is contained in:
Patrice Chotard 2019-04-26 10:52:51 +02:00
parent a69120a0d7
commit 16f6cb4c3f
1 changed files with 3 additions and 0 deletions
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3
arch/arm/mach-stm32/soc.c
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@ -21,6 +21,9 @@ int arch_cpu_init(void)
O_I_WB_RD_WR_ALLOC, REGION_16MB },
#endif
{ 0x90000000, REGION_1, XN_DIS, PRIV_RW_USR_RW,
SHARED_WRITE_BUFFERED, REGION_256MB },
#if defined(CONFIG_STM32F7) || defined(CONFIG_STM32H7)
{ 0xC0000000, REGION_0, XN_DIS, PRIV_RW_USR_RW,
O_I_WB_RD_WR_ALLOC, REGION_512MB },