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block: m25p80: Implemented FSR register 

Implements FSR register, it is used for busy waits.

Signed-off-by: Marcin Krzeminski <marcin.krzeminski@nokia.com>
Reviewed-by: Peter Crosthwaite <crosthwaite.peter@gmail.com>
Message-id: 1458719789-29868-10-git-send-email-marcin.krzeminski@nokia.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Marcin Krzeminski 2016-03-30 17:27:23 +01:00 committed by Peter Maydell
parent 63e47f6f72
commit 9fbaa36477
1 changed files with 15 additions and 0 deletions
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15
hw/block/m25p80.c
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@ -103,6 +103,10 @@ typedef struct FlashPartInfo {
#define NVCFG_LOWER_SEGMENT_MASK (1 << 1)
#define CFG_UPPER_128MB_SEG_ENABLED 0x3
/* Numonyx (Micron) Flag Status Register macros */
#define FSR_4BYTE_ADDR_MODE_ENABLED 0x1
#define FSR_FLASH_READY (1 << 7)
static const FlashPartInfo known_devices[] = {
/* Atmel -- some are (confusingly) marketed as "DataFlash" */
{ INFO("at25fs010", 0x1f6601, 0, 32 << 10, 4, ER_4K) },
@ -242,6 +246,7 @@ typedef enum {
WREN = 0x6,
JEDEC_READ = 0x9f,
BULK_ERASE = 0xc7,
READ_FSR = 0x70,
READ = 0x03,
READ4 = 0x13,
@ -690,6 +695,16 @@ static void decode_new_cmd(Flash *s, uint32_t value)
s->state = STATE_READING_DATA;
break;
case READ_FSR:
s->data[0] = FSR_FLASH_READY;
if (s->four_bytes_address_mode) {
s->data[0] |= FSR_4BYTE_ADDR_MODE_ENABLED;
}
s->pos = 0;
s->len = 1;
s->state = STATE_READING_DATA;
break;
case JEDEC_READ:
DB_PRINT_L(0, "populated jedec code\n");
s->data[0] = (s->pi->jedec >> 16) & 0xff;