From fe5f3a86d07e378baeeddc1dfecd0686d83aa42f Mon Sep 17 00:00:00 2001 From: Yauheni Saldatsenka Date: Sat, 14 Aug 2021 18:54:51 +0300 Subject: [PATCH] stm32f469-i: Update kernel start address As of GNU/Linux v5.12 kernel device tree binary grows above 0x08008000 and overwrites kernel binary Therefore this commit moves kernel to the next flash bank Signed-off-by: Yauheni Saldatsenka --- stm32f469i-disco.c | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) diff --git a/stm32f469i-disco.c b/stm32f469i-disco.c index 2da1f4b..46fc06a 100644 --- a/stm32f469i-disco.c +++ b/stm32f469i-disco.c @@ -6,6 +6,7 @@ #include "gpio.h" #include "mpu.h" +#define KERNEL_ADDR 0x08010000 #define CONFIG_HSE_HZ 8000000 #define CONFIG_PLL_M 8 #define CONFIG_PLL_N 360 @@ -85,7 +86,7 @@ static void fmc_wait_busy(void) void start_kernel(void) { - void (*kernel)(uint32_t reserved, uint32_t mach, uint32_t dt) = (void (*)(uint32_t, uint32_t, uint32_t))(0x08008000 | 1); + void (*kernel)(uint32_t reserved, uint32_t mach, uint32_t dt) = (void (*)(uint32_t, uint32_t, uint32_t))(KERNEL_ADDR | 1); kernel(0, ~0UL, 0x08004000); } @@ -102,7 +103,7 @@ int main(void) volatile uint32_t *SYSCFG_MEMRMP = (void *)(SYSCFG_BASE + 0x00); int i; - mpu_config(0x0); + mpu_config(0xc0000000); if (*FLASH_CR & FLASH_CR_LOCK) { *FLASH_KEYR = 0x45670123; @@ -195,8 +196,6 @@ int main(void) usart_setup(usart_base, 45000000); usart_putch(usart_base, '.'); - *SYSCFG_MEMRMP = 0x4; - start_kernel(); return 0; -- 2.32.0