stmhal: L4: Modify flash.c and storage.c to support L4 MCU.
The way to lookup the flash sector now uses a much simpler table for all MCUs.support-3.5
Tobias Badertscher
Damien George
parent
dda1a41205
commit
067fb2da14
220
stmhal/flash.c
220
stmhal/flash.c
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@ -30,105 +30,102 @@
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#include "mpconfigport.h"
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#include "py/misc.h"
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#if defined(MCU_SERIES_F7)
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typedef struct {
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uint32_t base_address;
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uint32_t sector_size;
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uint32_t sector_count;
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} flash_layout_t;
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#if defined(MCU_SERIES_F4)
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static const flash_layout_t flash_layout[] = {
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{ 0x08000000, 0x04000, 4 },
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{ 0x08010000, 0x10000, 1 },
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{ 0x08020000, 0x20000, 3 },
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#if defined(FLASH_SECTOR_8)
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{ 0x08080000, 0x20000, 4 },
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#endif
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#if defined(FLASH_SECTOR_12)
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{ 0x08100000, 0x04000, 4 },
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{ 0x08110000, 0x10000, 1 },
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{ 0x08120000, 0x20000, 7 },
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#endif
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};
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#elif defined(MCU_SERIES_F7)
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// FLASH_FLAG_PGSERR (Programming Sequence Error) was renamed to
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// FLASH_FLAG_ERSERR (Erasing Sequence Error) in STM32F7
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#define FLASH_FLAG_PGSERR FLASH_FLAG_ERSERR
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/* Base address of the Flash sectors */
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#define ADDR_FLASH_SECTOR_0 ((uint32_t)0x08000000) /* Base @ of Sector 0, 32 Kbytes */
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#define ADDR_FLASH_SECTOR_1 ((uint32_t)0x08008000) /* Base @ of Sector 1, 32 Kbytes */
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#define ADDR_FLASH_SECTOR_2 ((uint32_t)0x08010000) /* Base @ of Sector 2, 32 Kbytes */
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#define ADDR_FLASH_SECTOR_3 ((uint32_t)0x08018000) /* Base @ of Sector 3, 32 Kbytes */
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#define ADDR_FLASH_SECTOR_4 ((uint32_t)0x08020000) /* Base @ of Sector 4, 128 Kbytes */
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#define ADDR_FLASH_SECTOR_5 ((uint32_t)0x08040000) /* Base @ of Sector 5, 256 Kbytes */
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#define ADDR_FLASH_SECTOR_6 ((uint32_t)0x08080000) /* Base @ of Sector 6, 256 Kbytes */
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#define ADDR_FLASH_SECTOR_7 ((uint32_t)0x080C0000) /* Base @ of Sector 7, 256 Kbytes */
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#define ADDR_FLASH_END ((uint32_t)0x08100000) /* 1 Mbytes total */
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#else
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/* Base address of the Flash sectors */
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#define ADDR_FLASH_SECTOR_0 ((uint32_t)0x08000000) /* Base @ of Sector 0, 16 Kbytes */
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#define ADDR_FLASH_SECTOR_1 ((uint32_t)0x08004000) /* Base @ of Sector 1, 16 Kbytes */
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#define ADDR_FLASH_SECTOR_2 ((uint32_t)0x08008000) /* Base @ of Sector 2, 16 Kbytes */
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#define ADDR_FLASH_SECTOR_3 ((uint32_t)0x0800C000) /* Base @ of Sector 3, 16 Kbytes */
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#define ADDR_FLASH_SECTOR_4 ((uint32_t)0x08010000) /* Base @ of Sector 4, 64 Kbytes */
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#define ADDR_FLASH_SECTOR_5 ((uint32_t)0x08020000) /* Base @ of Sector 5, 128 Kbytes */
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#define ADDR_FLASH_SECTOR_6 ((uint32_t)0x08040000) /* Base @ of Sector 6, 128 Kbytes */
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#define ADDR_FLASH_SECTOR_7 ((uint32_t)0x08060000) /* Base @ of Sector 7, 128 Kbytes */
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#if !defined(FLASH_SECTOR_8)
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#define ADDR_FLASH_END ((uint32_t)0x08080000) /* 512 Kbytes total */
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#else
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#define ADDR_FLASH_SECTOR_8 ((uint32_t)0x08080000) /* Base @ of Sector 8, 128 Kbytes */
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#define ADDR_FLASH_SECTOR_9 ((uint32_t)0x080A0000) /* Base @ of Sector 9, 128 Kbytes */
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#define ADDR_FLASH_SECTOR_10 ((uint32_t)0x080C0000) /* Base @ of Sector 10, 128 Kbytes */
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#define ADDR_FLASH_SECTOR_11 ((uint32_t)0x080E0000) /* Base @ of Sector 11, 128 Kbytes */
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#if !defined(FLASH_SECTOR_12)
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#define ADDR_FLASH_END ((uint32_t)0x08100000) /* 1 Mbytes total */
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#else
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#define ADDR_FLASH_SECTOR_12 ((uint32_t)0x08100000) /* Base @ of Sector 12, 16 Kbytes */
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#define ADDR_FLASH_SECTOR_13 ((uint32_t)0x08104000) /* Base @ of Sector 13, 16 Kbytes */
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#define ADDR_FLASH_SECTOR_14 ((uint32_t)0x08108000) /* Base @ of Sector 14, 16 Kbytes */
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#define ADDR_FLASH_SECTOR_15 ((uint32_t)0x0810C000) /* Base @ of Sector 15, 16 Kbytes */
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#define ADDR_FLASH_SECTOR_16 ((uint32_t)0x08110000) /* Base @ of Sector 16, 64 Kbytes */
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#define ADDR_FLASH_SECTOR_17 ((uint32_t)0x08120000) /* Base @ of Sector 17, 128 Kbytes */
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#define ADDR_FLASH_SECTOR_18 ((uint32_t)0x08140000) /* Base @ of Sector 18, 128 Kbytes */
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#define ADDR_FLASH_SECTOR_19 ((uint32_t)0x08160000) /* Base @ of Sector 19, 128 Kbytes */
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#define ADDR_FLASH_SECTOR_20 ((uint32_t)0x08180000) /* Base @ of Sector 20, 128 Kbytes */
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#define ADDR_FLASH_SECTOR_21 ((uint32_t)0x081A0000) /* Base @ of Sector 21, 128 Kbytes */
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#define ADDR_FLASH_SECTOR_22 ((uint32_t)0x081C0000) /* Base @ of Sector 22, 128 Kbytes */
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#define ADDR_FLASH_SECTOR_23 ((uint32_t)0x081E0000) /* Base @ of Sector 23, 128 Kbytes */
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#define ADDR_FLASH_END ((uint32_t)0x08200000) /* 2 Mbytes total */
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#endif
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#endif
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#endif // MCU_SERIES_F7
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static const uint32_t flash_info_table[] = {
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ADDR_FLASH_SECTOR_0, FLASH_SECTOR_0,
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ADDR_FLASH_SECTOR_1, FLASH_SECTOR_1,
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ADDR_FLASH_SECTOR_2, FLASH_SECTOR_2,
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ADDR_FLASH_SECTOR_3, FLASH_SECTOR_3,
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ADDR_FLASH_SECTOR_4, FLASH_SECTOR_4,
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ADDR_FLASH_SECTOR_5, FLASH_SECTOR_5,
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ADDR_FLASH_SECTOR_6, FLASH_SECTOR_6,
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ADDR_FLASH_SECTOR_7, FLASH_SECTOR_7,
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#if defined(FLASH_SECTOR_8)
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ADDR_FLASH_SECTOR_8, FLASH_SECTOR_8,
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ADDR_FLASH_SECTOR_9, FLASH_SECTOR_9,
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ADDR_FLASH_SECTOR_10, FLASH_SECTOR_10,
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ADDR_FLASH_SECTOR_11, FLASH_SECTOR_11,
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#endif
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#if defined(FLASH_SECTOR_12)
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ADDR_FLASH_SECTOR_12, FLASH_SECTOR_12,
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ADDR_FLASH_SECTOR_13, FLASH_SECTOR_13,
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ADDR_FLASH_SECTOR_14, FLASH_SECTOR_14,
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ADDR_FLASH_SECTOR_15, FLASH_SECTOR_15,
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ADDR_FLASH_SECTOR_16, FLASH_SECTOR_16,
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ADDR_FLASH_SECTOR_17, FLASH_SECTOR_17,
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ADDR_FLASH_SECTOR_18, FLASH_SECTOR_18,
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ADDR_FLASH_SECTOR_19, FLASH_SECTOR_19,
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ADDR_FLASH_SECTOR_20, FLASH_SECTOR_20,
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ADDR_FLASH_SECTOR_21, FLASH_SECTOR_21,
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ADDR_FLASH_SECTOR_22, FLASH_SECTOR_22,
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ADDR_FLASH_SECTOR_23, FLASH_SECTOR_23,
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#endif
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ADDR_FLASH_END, 0,
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static const flash_layout_t flash_layout[] = {
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{ 0x08000000, 0x08000, 4 },
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{ 0x08020000, 0x20000, 1 },
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{ 0x08040000, 0x40000, 3 },
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};
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#elif defined(MCU_SERIES_L4)
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static const flash_layout_t flash_layout[] = {
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{ (uint32_t)FLASH_BASE, (uint32_t)FLASH_PAGE_SIZE, 512 },
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};
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#else
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#error Unsupported processor
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#endif
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#if defined(MCU_SERIES_L4)
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// get the bank of a given flash address
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static uint32_t get_bank(uint32_t addr) {
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if (READ_BIT(SYSCFG->MEMRMP, SYSCFG_MEMRMP_FB_MODE) == 0) {
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// no bank swap
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if (addr < (FLASH_BASE + FLASH_BANK_SIZE)) {
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return FLASH_BANK_1;
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} else {
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return FLASH_BANK_2;
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}
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} else {
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// bank swap
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if (addr < (FLASH_BASE + FLASH_BANK_SIZE)) {
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return FLASH_BANK_2;
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} else {
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return FLASH_BANK_1;
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}
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}
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}
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// get the page of a given flash address
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static uint32_t get_page(uint32_t addr) {
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if (addr < (FLASH_BASE + FLASH_BANK_SIZE)) {
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// bank 1
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return (addr - FLASH_BASE) / FLASH_PAGE_SIZE;
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} else {
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// bank 2
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return (addr - (FLASH_BASE + FLASH_BANK_SIZE)) / FLASH_PAGE_SIZE;
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}
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}
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#endif
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uint32_t flash_get_sector_info(uint32_t addr, uint32_t *start_addr, uint32_t *size) {
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if (addr >= flash_info_table[0]) {
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for (int i = 0; i < MP_ARRAY_SIZE(flash_info_table) - 2; i += 2) {
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if (addr < flash_info_table[i + 2]) {
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if (start_addr != NULL) {
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*start_addr = flash_info_table[i];
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if (addr >= flash_layout[0].base_address) {
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uint32_t sector_index = 0;
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for (int i = 0; i < MP_ARRAY_SIZE(flash_layout); ++i) {
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for (int j = 0; j < flash_layout[i].sector_count; ++j) {
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uint32_t sector_start_next = flash_layout[i].base_address
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+ (j + 1) * flash_layout[i].sector_size;
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if (addr < sector_start_next) {
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if (start_addr != NULL) {
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*start_addr = flash_layout[i].base_address
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+ j * flash_layout[i].sector_size;
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}
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if (size != NULL) {
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*size = flash_layout[i].sector_size;
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}
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return sector_index;
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}
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if (size != NULL) {
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*size = flash_info_table[i + 2] - flash_info_table[i];
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}
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return flash_info_table[i + 1];
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++sector_index;
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}
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}
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}
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@ -144,16 +141,30 @@ void flash_erase(uint32_t flash_dest, const uint32_t *src, uint32_t num_word32)
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// unlock
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HAL_FLASH_Unlock();
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FLASH_EraseInitTypeDef EraseInitStruct;
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#if defined(MCU_SERIES_L4)
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__HAL_FLASH_CLEAR_FLAG(FLASH_FLAG_ALL_ERRORS);
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// erase the sector(s)
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// The sector returned by flash_get_sector_info can not be used
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// as the flash has on each bank 0/1 pages 0..255
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EraseInitStruct.TypeErase = FLASH_TYPEERASE_PAGES;
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EraseInitStruct.Banks = get_bank(flash_dest);
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EraseInitStruct.Page = get_page(flash_dest);
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EraseInitStruct.NbPages = get_page(flash_dest + 4 * num_word32 - 1) - EraseInitStruct.Page + 1;;
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#else
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// Clear pending flags (if any)
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__HAL_FLASH_CLEAR_FLAG(FLASH_FLAG_EOP | FLASH_FLAG_OPERR | FLASH_FLAG_WRPERR |
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FLASH_FLAG_PGAERR | FLASH_FLAG_PGPERR | FLASH_FLAG_PGSERR);
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// erase the sector(s)
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FLASH_EraseInitTypeDef EraseInitStruct;
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EraseInitStruct.TypeErase = TYPEERASE_SECTORS;
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EraseInitStruct.VoltageRange = VOLTAGE_RANGE_3; // voltage range needs to be 2.7V to 3.6V
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EraseInitStruct.Sector = flash_get_sector_info(flash_dest, NULL, NULL);
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EraseInitStruct.NbSectors = flash_get_sector_info(flash_dest + 4 * num_word32 - 1, NULL, NULL) - EraseInitStruct.Sector + 1;
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#endif
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uint32_t SectorError = 0;
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if (HAL_FLASHEx_Erase(&EraseInitStruct, &SectorError) != HAL_OK) {
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// error occurred during sector erase
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@ -192,6 +203,31 @@ void flash_erase_it(uint32_t flash_dest, const uint32_t *src, uint32_t num_word3
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*/
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void flash_write(uint32_t flash_dest, const uint32_t *src, uint32_t num_word32) {
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#if defined(MCU_SERIES_L4)
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// program the flash uint64 by uint64
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for (int i = 0; i < num_word32 / 2; i++) {
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uint64_t val = *(uint64_t*)src;
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if (HAL_FLASH_Program(FLASH_TYPEPROGRAM_DOUBLEWORD, flash_dest, val) != HAL_OK) {
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// error occurred during flash write
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HAL_FLASH_Lock(); // lock the flash
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return;
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}
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flash_dest += 8;
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src += 2;
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}
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if ((num_word32 & 0x01) == 1) {
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uint64_t val = *(uint64_t*)flash_dest;
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val = (val & 0xffffffff00000000uL) | (*src);
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if (HAL_FLASH_Program(FLASH_TYPEPROGRAM_DOUBLEWORD, flash_dest, val) != HAL_OK) {
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// error occurred during flash write
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HAL_FLASH_Lock(); // lock the flash
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return;
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}
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}
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#else
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// program the flash word by word
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for (int i = 0; i < num_word32; i++) {
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if (HAL_FLASH_Program(TYPEPROGRAM_WORD, flash_dest, *src) != HAL_OK) {
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@ -203,6 +239,8 @@ void flash_write(uint32_t flash_dest, const uint32_t *src, uint32_t num_word32)
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src += 1;
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}
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#endif
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// lock the flash
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HAL_FLASH_Lock();
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}
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@ -84,6 +84,14 @@ STATIC byte flash_cache_mem[0x4000] __attribute__((aligned(4))); // 16k
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#define FLASH_MEM_SEG1_START_ADDR (0x08008000) // sector 1
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#define FLASH_MEM_SEG1_NUM_BLOCKS (192) // sectors 1,2,3: 32k+32k+32=96k
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#elif defined(STM32L476xx)
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// The STM32L476 doesn't have CCRAM, so we use the 32K SRAM2 for this.
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#define CACHE_MEM_START_ADDR (0x10000000) // SRAM2 data RAM, 32k
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#define FLASH_SECTOR_SIZE_MAX (0x00800) // 2k max
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#define FLASH_MEM_SEG1_START_ADDR (0x08000800) // sector 1
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#define FLASH_MEM_SEG1_NUM_BLOCKS (252) // 1 Block=512 Bytes Reserve 126 kBytes
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#else
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#error "no storage support for this MCU"
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#endif
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