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block: m25p80: Fast read and 4bytes commands

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Adds fast read and 4bytes commands family.
This work is based on Pawel Lenkow patch from v1.

Signed-off-by: Marcin Krzeminski <marcin.krzeminski@nokia.com>
Reviewed-by: Peter Crosthwaite <crosthwaite.peter@gmail.com>
Message-id: 1458719789-29868-9-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 aeb83edbf3
commit 63e47f6f72
1 changed files with 46 additions and 4 deletions
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48
hw/block/m25p80.c
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@ -243,20 +243,29 @@ typedef enum {
JEDEC_READ = 0x9f,
BULK_ERASE = 0xc7,
READ = 0x3,
FAST_READ = 0xb,
READ = 0x03,
READ4 = 0x13,
FAST_READ = 0x0b,
FAST_READ4 = 0x0c,
DOR = 0x3b,
DOR4 = 0x3c,
QOR = 0x6b,
QOR4 = 0x6c,
DIOR = 0xbb,
DIOR4 = 0xbc,
QIOR = 0xeb,
QIOR4 = 0xec,
PP = 0x2,
PP = 0x02,
PP4 = 0x12,
DPP = 0xa2,
QPP = 0x32,
ERASE_4K = 0x20,
ERASE4_4K = 0x21,
ERASE_32K = 0x52,
ERASE_SECTOR = 0xd8,
ERASE4_SECTOR = 0xdc,
EN_4BYTE_ADDR = 0xB7,
EX_4BYTE_ADDR = 0xE9,
@ -379,6 +388,7 @@ static void flash_erase(Flash *s, int offset, FlashCMD cmd)
switch (cmd) {
case ERASE_4K:
case ERASE4_4K:
len = 4 << 10;
capa_to_assert = ER_4K;
break;
@ -387,6 +397,7 @@ static void flash_erase(Flash *s, int offset, FlashCMD cmd)
capa_to_assert = ER_32K;
break;
case ERASE_SECTOR:
case ERASE4_SECTOR:
len = s->pi->sector_size;
break;
case BULK_ERASE:
@ -445,8 +456,21 @@ void flash_write8(Flash *s, uint64_t addr, uint8_t data)
static inline int get_addr_length(Flash *s)
{
switch (s->cmd_in_progress) {
case PP4:
case READ4:
case QIOR4:
case ERASE4_4K:
case ERASE4_SECTOR:
case FAST_READ4:
case DOR4:
case QOR4:
case DIOR4:
return 4;
default:
return s->four_bytes_address_mode ? 4 : 3;
}
}
static void complete_collecting_data(Flash *s)
{
@ -469,19 +493,28 @@ static void complete_collecting_data(Flash *s)
case DPP:
case QPP:
case PP:
case PP4:
s->state = STATE_PAGE_PROGRAM;
break;
case READ:
case READ4:
case FAST_READ:
case FAST_READ4:
case DOR:
case DOR4:
case QOR:
case QOR4:
case DIOR:
case DIOR4:
case QIOR:
case QIOR4:
s->state = STATE_READ;
break;
case ERASE_4K:
case ERASE4_4K:
case ERASE_32K:
case ERASE_SECTOR:
case ERASE4_SECTOR:
flash_erase(s, s->cur_addr, s->cmd_in_progress);
break;
case WRSR:
@ -568,12 +601,16 @@ static void decode_new_cmd(Flash *s, uint32_t value)
switch (value) {
case ERASE_4K:
case ERASE4_4K:
case ERASE_32K:
case ERASE_SECTOR:
case ERASE4_SECTOR:
case READ:
case READ4:
case DPP:
case QPP:
case PP:
case PP4:
s->needed_bytes = get_addr_length(s);
s->pos = 0;
s->len = 0;
@ -581,8 +618,11 @@ static void decode_new_cmd(Flash *s, uint32_t value)
break;
case FAST_READ:
case FAST_READ4:
case DOR:
case DOR4:
case QOR:
case QOR4:
s->needed_bytes = get_addr_length(s);
if (((s->pi->jedec >> 16) & 0xFF) == JEDEC_NUMONYX) {
/* Dummy cycles modeled with bytes writes instead of bits */
@ -594,6 +634,7 @@ static void decode_new_cmd(Flash *s, uint32_t value)
break;
case DIOR:
case DIOR4:
switch ((s->pi->jedec >> 16) & 0xFF) {
case JEDEC_WINBOND:
case JEDEC_SPANSION:
@ -610,6 +651,7 @@ static void decode_new_cmd(Flash *s, uint32_t value)
break;
case QIOR:
case QIOR4:
switch ((s->pi->jedec >> 16) & 0xFF) {
case JEDEC_WINBOND:
case JEDEC_SPANSION: