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setup: typo changes in mpu setup

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Pavol Rusnak 2018-02-13 16:16:31 +01:00
parent 3cba075e4f
commit a00ac050e5
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GPG Key ID: 91F3B339B9A02A3D
1 changed files with 34 additions and 34 deletions
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setup.c
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@ -27,22 +27,8 @@
#include "rng.h" #include "rng.h"
#include "layout.h" #include "layout.h"
#include "memory.h"
#include "util.h" #include "util.h"
#define MPU_RASR_SIZE_32B (0x04UL << MPU_RASR_SIZE_LSB)
#define MPU_RASR_SIZE_32KB (0x0EUL << MPU_RASR_SIZE_LSB)
#define MPU_RASR_SIZE_64KB (0x0FUL << MPU_RASR_SIZE_LSB)
#define MPU_RASR_SIZE_128KB (0x10UL << MPU_RASR_SIZE_LSB)
#define MPU_RASR_SIZE_256KB (0x11UL << MPU_RASR_SIZE_LSB)
#define MPU_RASR_SIZE_512KB (0x12UL << MPU_RASR_SIZE_LSB)
#define MPU_RASR_SIZE_512MB (0x1CUL << MPU_RASR_SIZE_LSB)
// http://infocenter.arm.com/help/topic/com.arm.doc.dui0552a/BABDJJGF.html
#define MPU_RASR_ATTR_FLASH (MPU_RASR_ATTR_C)
#define MPU_RASR_ATTR_SRAM (MPU_RASR_ATTR_S | MPU_RASR_ATTR_C)
#define MPU_RASR_ATTR_PERIPH (MPU_RASR_ATTR_S | MPU_RASR_ATTR_B)
uint32_t __stack_chk_guard; uint32_t __stack_chk_guard;
static inline void __attribute__((noreturn)) fault_handler(const char *line1) { static inline void __attribute__((noreturn)) fault_handler(const char *line1) {
@ -155,42 +141,56 @@ void setupApp(void)
gpio_set_af(GPIOA, GPIO_AF10, GPIO10); gpio_set_af(GPIOA, GPIO_AF10, GPIO10);
} }
#define MPU_RASR_SIZE_32KB (0x0EUL << MPU_RASR_SIZE_LSB)
#define MPU_RASR_SIZE_64KB (0x0FUL << MPU_RASR_SIZE_LSB)
#define MPU_RASR_SIZE_128KB (0x10UL << MPU_RASR_SIZE_LSB)
#define MPU_RASR_SIZE_256KB (0x11UL << MPU_RASR_SIZE_LSB)
#define MPU_RASR_SIZE_512MB (0x1CUL << MPU_RASR_SIZE_LSB)
// http://infocenter.arm.com/help/topic/com.arm.doc.dui0552a/BABDJJGF.html
#define MPU_RASR_ATTR_FLASH (MPU_RASR_ATTR_C)
#define MPU_RASR_ATTR_SRAM (MPU_RASR_ATTR_C | MPU_RASR_ATTR_S)
#define MPU_RASR_ATTR_PERIPH (MPU_RASR_ATTR_B | MPU_RASR_ATTR_S)
#define FLASH_BASE (0x08000000U)
#define SRAM_BASE (0x20000000U)
// Never use in bootloader! Disables access to PPB (including MPU, NVIC, SCB) // Never use in bootloader! Disables access to PPB (including MPU, NVIC, SCB)
void mpu_config(void) void mpu_config(void)
{ {
// Enable memory fault handler
SCB_SHCSR |= SCB_SHCSR_MEMFAULTENA;
// Disable MPU // Disable MPU
MPU_CTRL = 0; MPU_CTRL = 0;
// Bootloader (read-only, execute never) // Bootloader (0x08000000 - 0x08007FFF, 32 KiB, read-only, execute never)
MPU_RBAR = 0x08000000 | MPU_RBAR_VALID | (0 << MPU_RBAR_REGION_LSB); MPU_RBAR = FLASH_BASE | MPU_RBAR_VALID | (0 << MPU_RBAR_REGION_LSB);
MPU_RASR = MPU_RASR_ENABLE | MPU_RASR_ATTR_FLASH | MPU_RASR_SIZE_32KB | MPU_RASR_ATTR_AP_PRO_URO | MPU_RASR_ATTR_XN; MPU_RASR = MPU_RASR_ENABLE | MPU_RASR_ATTR_FLASH | MPU_RASR_SIZE_32KB | MPU_RASR_ATTR_AP_PRO_URO | MPU_RASR_ATTR_XN;
// Metadata (read-write, execute never) // Metadata (0x08008000 - 0x0800FFFF, 32 KiB, read-write, execute never)
MPU_RBAR = 0x08008000 | MPU_RBAR_VALID | (1 << MPU_RBAR_REGION_LSB); MPU_RBAR = FLASH_BASE | 0x8000 | MPU_RBAR_VALID | (1 << MPU_RBAR_REGION_LSB);
MPU_RASR = MPU_RASR_ENABLE | MPU_RASR_ATTR_FLASH | MPU_RASR_SIZE_32KB | MPU_RASR_ATTR_AP_PRW_URW | MPU_RASR_ATTR_XN; MPU_RASR = MPU_RASR_ENABLE | MPU_RASR_ATTR_FLASH | MPU_RASR_SIZE_32KB | MPU_RASR_ATTR_AP_PRW_URW | MPU_RASR_ATTR_XN;
// Firmware (read-only) // Firmware (0x08010000 - 0x0807FFFF, 64 + 3 * 128 KiB = 64 + 128 + 256 KiB = 448 KiB, read-only)
MPU_RBAR = 0x08010000 | MPU_RBAR_VALID | (2 << MPU_RBAR_REGION_LSB); MPU_RBAR = FLASH_BASE | 0x10000 | MPU_RBAR_VALID | (2 << MPU_RBAR_REGION_LSB);
MPU_RASR = MPU_RASR_ENABLE | MPU_RASR_ATTR_FLASH | MPU_RASR_SIZE_64KB | MPU_RASR_ATTR_AP_PRO_URO; MPU_RASR = MPU_RASR_ENABLE | MPU_RASR_ATTR_FLASH | MPU_RASR_SIZE_64KB | MPU_RASR_ATTR_AP_PRO_URO;
MPU_RBAR = 0x08020000 | MPU_RBAR_VALID | (3 << MPU_RBAR_REGION_LSB); MPU_RBAR = FLASH_BASE | 0x20000 | MPU_RBAR_VALID | (3 << MPU_RBAR_REGION_LSB);
MPU_RASR = MPU_RASR_ENABLE | MPU_RASR_ATTR_FLASH | MPU_RASR_SIZE_128KB | MPU_RASR_ATTR_AP_PRO_URO; MPU_RASR = MPU_RASR_ENABLE | MPU_RASR_ATTR_FLASH | MPU_RASR_SIZE_128KB | MPU_RASR_ATTR_AP_PRO_URO;
MPU_RBAR = 0x08040000 | MPU_RBAR_VALID | (4 << MPU_RBAR_REGION_LSB); MPU_RBAR = FLASH_BASE | 0x40000 | MPU_RBAR_VALID | (4 << MPU_RBAR_REGION_LSB);
MPU_RASR = MPU_RASR_ENABLE | MPU_RASR_ATTR_FLASH | MPU_RASR_SIZE_256KB | MPU_RASR_ATTR_AP_PRO_URO; MPU_RASR = MPU_RASR_ENABLE | MPU_RASR_ATTR_FLASH | MPU_RASR_SIZE_256KB | MPU_RASR_ATTR_AP_PRO_URO;
// SRAM (read-write, execute never) // SRAM (0x20000000 - 0x2001FFFF, read-write, execute never)
MPU_RBAR = 0x20000000 | MPU_RBAR_VALID | (5 << MPU_RBAR_REGION_LSB); MPU_RBAR = SRAM_BASE | MPU_RBAR_VALID | (5 << MPU_RBAR_REGION_LSB);
MPU_RASR = MPU_RASR_ENABLE | MPU_RASR_ATTR_SRAM | MPU_RASR_SIZE_128KB | MPU_RASR_ATTR_AP_PRW_URW | MPU_RASR_ATTR_XN; MPU_RASR = MPU_RASR_ENABLE | MPU_RASR_ATTR_SRAM | MPU_RASR_SIZE_128KB | MPU_RASR_ATTR_AP_PRW_URW | MPU_RASR_ATTR_XN;
// Peripherals (read-write, execute never) // Peripherals (0x40000000 - 0x5FFFFFFF, read-write, execute never)
MPU_RBAR = PERIPH_BASE | MPU_RBAR_VALID | (6 << MPU_RBAR_REGION_LSB); MPU_RBAR = PERIPH_BASE | MPU_RBAR_VALID | (6 << MPU_RBAR_REGION_LSB);
MPU_RASR = MPU_RASR_ENABLE | MPU_RASR_ATTR_PERIPH | MPU_RASR_SIZE_512MB | MPU_RASR_ATTR_AP_PRW_URW | MPU_RASR_ATTR_XN; MPU_RASR = MPU_RASR_ENABLE | MPU_RASR_ATTR_PERIPH | MPU_RASR_SIZE_512MB | MPU_RASR_ATTR_AP_PRW_URW | MPU_RASR_ATTR_XN;
// Enable MPU // Enable MPU
MPU_CTRL = MPU_CTRL_ENABLE; MPU_CTRL = MPU_CTRL_ENABLE;
// Enable memory fault handler
SCB_SHCSR |= SCB_SHCSR_MEMFAULTENA;
__asm__ volatile("dsb"); __asm__ volatile("dsb");
__asm__ volatile("isb"); __asm__ volatile("isb");
} }