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spi_flash: Support suspend/resume mode for operations

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- Adds arbitration between the erase and write in suspend mode
     (If the flash memory is suspended then only a read operation can be performed.)
- espcoredump: Dump does not use suspend feature, just resume before continue.
- spi_flash: Add release_cpu() to do suspend/release_cpu/resume
This commit is contained in:
KonstantinKondrashov
2020-04-25 04:12:43 +08:00
committed by Cao Sen Miao
parent 728801883e
commit afef16c2e9
3 changed files with 5 additions and 2 deletions
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2
components/soc/esp32s2/include/soc/spi_mem_struct.h
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@@ -266,7 +266,7 @@ typedef volatile struct spi_mem_dev_s {
}; };
uint32_t val; uint32_t val;
} fsm; } fsm;
uint32_t data_buf[18]; /*data buffer*/ uint32_t data_buf[16]; /*data buffer*/
union { union {
struct { struct {
uint32_t waiti_en: 1; /*auto-waiting flash idle operation when program flash or erase flash. 1: enable 0: disable.*/ uint32_t waiti_en: 1; /*auto-waiting flash idle operation when program flash or erase flash. 1: enable 0: disable.*/

3
components/spi_flash/Kconfig
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@@ -124,6 +124,7 @@ menu "SPI Flash driver"
config SPI_FLASH_YIELD_DURING_ERASE config SPI_FLASH_YIELD_DURING_ERASE
bool "Enables yield operation during flash erase" bool "Enables yield operation during flash erase"
default y default y
depends on SPI_FLASH_USE_LEGACY_IMPL
help help
This allows to yield the CPUs between erase commands. This allows to yield the CPUs between erase commands.
Prevents starvation of other tasks. Prevents starvation of other tasks.
@@ -137,7 +138,7 @@ menu "SPI Flash driver"
then it will yield CPUs after finishing a current command. then it will yield CPUs after finishing a current command.
config SPI_FLASH_ERASE_YIELD_TICKS config SPI_FLASH_ERASE_YIELD_TICKS
int "CPU release time (tick)" int "CPU release time (tick) for an erase operation"
depends on SPI_FLASH_YIELD_DURING_ERASE depends on SPI_FLASH_YIELD_DURING_ERASE
default 1 default 1
help help

2
components/spi_flash/private_include/spi_flash_defs.h
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@@ -47,6 +47,8 @@
#define CMD_LARGE_BLOCK_ERASE_4B 0xDC /* 64KB block erase command */ #define CMD_LARGE_BLOCK_ERASE_4B 0xDC /* 64KB block erase command */
#define CMD_PROGRAM_PAGE 0x02 #define CMD_PROGRAM_PAGE 0x02
#define CMD_PROGRAM_PAGE_4B 0x12 #define CMD_PROGRAM_PAGE_4B 0x12
#define CMD_SUSPEND 0x75
#define CMD_RESUME 0x7A
#define CMD_RST_EN 0x66 #define CMD_RST_EN 0x66
#define CMD_RST_DEV 0x99 #define CMD_RST_DEV 0x99