summaryrefslogtreecommitdiff
path: root/arch/arm/cpu/armv7m/stm32f1/flash.c
diff options
context:
space:
mode:
authorVikas Manocha <vikas.manocha@st.com>2016-01-15 17:49:06 -0800
committerTom Rini <trini@konsulko.com>2016-01-20 10:19:41 -0500
commit0a61ee880ceecfa8e3ac12774c4424a73c0ba91d (patch)
tree2e0c6c0634950c3e7bd69f2b3f7c1668d30f459e /arch/arm/cpu/armv7m/stm32f1/flash.c
parenta260af611834466afb0aeeb53cec0bcdf2228b7c (diff)
stm32: move stm32 specific code to mach-stm32
This patch moves stm32 sources at one place, with this armv7m now contains only generic stuff. Signed-off-by: Vikas Manocha <vikas.manocha@st.com>
Diffstat (limited to 'arch/arm/cpu/armv7m/stm32f1/flash.c')
-rw-r--r--arch/arm/cpu/armv7m/stm32f1/flash.c180
1 files changed, 0 insertions, 180 deletions
diff --git a/arch/arm/cpu/armv7m/stm32f1/flash.c b/arch/arm/cpu/armv7m/stm32f1/flash.c
deleted file mode 100644
index 7d41f63733..0000000000
--- a/arch/arm/cpu/armv7m/stm32f1/flash.c
+++ /dev/null
@@ -1,180 +0,0 @@
-/*
- * (C) Copyright 2015
- * Kamil Lulko, <kamil.lulko@gmail.com>
- *
- * Copyright 2015 ATS Advanced Telematics Systems GmbH
- * Copyright 2015 Konsulko Group, Matt Porter <mporter@konsulko.com>
- *
- * SPDX-License-Identifier: GPL-2.0+
- */
-
-#include <common.h>
-#include <asm/io.h>
-#include <asm/arch/stm32.h>
-
-#define STM32_FLASH_KEY1 0x45670123
-#define STM32_FLASH_KEY2 0xcdef89ab
-
-#define STM32_NUM_BANKS 2
-#define STM32_MAX_BANK 0x200
-
-flash_info_t flash_info[STM32_NUM_BANKS];
-static struct stm32_flash_bank_regs *flash_bank[STM32_NUM_BANKS];
-
-static void stm32f1_flash_lock(u8 bank, u8 lock)
-{
- if (lock) {
- setbits_le32(&flash_bank[bank]->cr, STM32_FLASH_CR_LOCK);
- } else {
- writel(STM32_FLASH_KEY1, &flash_bank[bank]->keyr);
- writel(STM32_FLASH_KEY2, &flash_bank[bank]->keyr);
- }
-}
-
-/* Only XL devices are supported (2 KiB sector size) */
-unsigned long flash_init(void)
-{
- u8 i, banks;
- u16 j, size;
-
- /* Set up accessors for XL devices with wonky register layout */
- flash_bank[0] = (struct stm32_flash_bank_regs *)&STM32_FLASH->keyr;
- flash_bank[1] = (struct stm32_flash_bank_regs *)&STM32_FLASH->keyr2;
-
- /*
- * Get total flash size (in KiB) and configure number of banks
- * present and sector count per bank.
- */
- size = readw(&STM32_DES->flash_size);
- if (size <= STM32_MAX_BANK) {
- banks = 1;
- flash_info[0].sector_count = size >> 1;
- } else if (size > STM32_MAX_BANK) {
- banks = 2;
- flash_info[0].sector_count = STM32_MAX_BANK >> 1;
- flash_info[1].sector_count = (size - STM32_MAX_BANK) >> 1;
- }
-
- /* Configure start/size for all sectors */
- for (i = 0; i < banks; i++) {
- flash_info[i].flash_id = FLASH_STM32F1;
- flash_info[i].start[0] = CONFIG_SYS_FLASH_BASE + (i << 19);
- flash_info[i].size = 2048;
- for (j = 1; (j < flash_info[i].sector_count); j++) {
- flash_info[i].start[j] = flash_info[i].start[j - 1]
- + 2048;
- flash_info[i].size += 2048;
- }
- }
-
- return size << 10;
-}
-
-void flash_print_info(flash_info_t *info)
-{
- int i;
-
- if (info->flash_id == FLASH_UNKNOWN) {
- printf("Missing or unknown FLASH type\n");
- return;
- } else if (info->flash_id == FLASH_STM32F1) {
- printf("STM32F1 Embedded Flash\n");
- }
-
- printf(" Size: %ld MB in %d Sectors\n",
- info->size >> 10, info->sector_count);
-
- printf(" Sector Start Addresses:");
- for (i = 0; i < info->sector_count; ++i) {
- if ((i % 5) == 0)
- printf("\n ");
- printf(" %08lX%s",
- info->start[i],
- info->protect[i] ? " (RO)" : " ");
- }
- printf("\n");
- return;
-}
-
-int flash_erase(flash_info_t *info, int first, int last)
-{
- u8 bank = 0xff;
- int i;
-
- for (i = 0; i < STM32_NUM_BANKS; i++) {
- if (info == &flash_info[i]) {
- bank = i;
- break;
- }
- }
- if (bank == 0xff)
- return -1;
-
- stm32f1_flash_lock(bank, 0);
-
- for (i = first; i <= last; i++) {
- while (readl(&flash_bank[bank]->sr) & STM32_FLASH_SR_BSY)
- ;
-
- setbits_le32(&flash_bank[bank]->cr, STM32_FLASH_CR_PER);
-
- writel(info->start[i], &flash_bank[bank]->ar);
-
- setbits_le32(&flash_bank[bank]->cr, STM32_FLASH_CR_STRT);
-
- while (readl(&flash_bank[bank]->sr) & STM32_FLASH_SR_BSY)
- ;
- }
-
- clrbits_le32(&flash_bank[bank]->cr, STM32_FLASH_CR_PER);
-
- stm32f1_flash_lock(bank, 1);
-
- return 0;
-}
-
-int write_buff(flash_info_t *info, uchar *src, ulong addr, ulong cnt)
-{
- ulong i;
- u8 bank = 0xff;
-
- if (addr & 1) {
- printf("Flash address must be half word aligned\n");
- return -1;
- }
-
- if (cnt & 1) {
- printf("Flash length must be half word aligned\n");
- return -1;
- }
-
- for (i = 0; i < 2; i++) {
- if (info == &flash_info[i]) {
- bank = i;
- break;
- }
- }
-
- if (bank == 0xff)
- return -1;
-
- while (readl(&flash_bank[bank]->sr) & STM32_FLASH_SR_BSY)
- ;
-
- stm32f1_flash_lock(bank, 0);
-
- setbits_le32(&flash_bank[bank]->cr, STM32_FLASH_CR_PG);
-
- /* STM32F1 requires half word writes */
- for (i = 0; i < cnt >> 1; i++) {
- *(u16 *)(addr + i * 2) = ((u16 *)src)[i];
- while (readl(&flash_bank[bank]->sr) & STM32_FLASH_SR_BSY)
- ;
- }
-
- clrbits_le32(&flash_bank[bank]->cr, STM32_FLASH_CR_PG);
-
- stm32f1_flash_lock(bank, 1);
-
- return 0;
-}