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block: m25p80: RESET_ENABLE and RESET_MEMORY commands 

Signed-off-by: Marcin Krzeminski <marcin.krzeminski@nokia.com>
Reviewed-by: Peter Crosthwaite <crosthwaite.peter@gmail.com>
Message-id: 1458719789-29868-3-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 17:27:22 +01:00 committed by Peter Maydell
parent e8710c2293
commit 187c26364c
1 changed files with 40 additions and 1 deletions
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41
hw/block/m25p80.c
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@ -233,6 +233,9 @@ typedef enum {
ERASE_4K = 0x20,
ERASE_32K = 0x52,
ERASE_SECTOR = 0xd8,
RESET_ENABLE = 0x66,
RESET_MEMORY = 0x99,
} FlashCMD;
typedef enum {
@ -260,6 +263,7 @@ typedef struct Flash {
uint8_t cmd_in_progress;
uint64_t cur_addr;
bool write_enable;
bool reset_enable;
int64_t dirty_page;
@ -432,11 +436,29 @@ static void complete_collecting_data(Flash *s)
}
}
static void reset_memory(Flash *s)
{
s->cmd_in_progress = NOP;
s->cur_addr = 0;
s->len = 0;
s->needed_bytes = 0;
s->pos = 0;
s->state = STATE_IDLE;
s->write_enable = false;
s->reset_enable = false;
DB_PRINT_L(0, "Reset done.\n");
}
static void decode_new_cmd(Flash *s, uint32_t value)
{
s->cmd_in_progress = value;
DB_PRINT_L(0, "decoded new command:%x\n", value);
if (value != RESET_MEMORY) {
s->reset_enable = false;
}
switch (value) {
case ERASE_4K:
@ -541,6 +563,14 @@ static void decode_new_cmd(Flash *s, uint32_t value)
break;
case NOP:
break;
case RESET_ENABLE:
s->reset_enable = true;
break;
case RESET_MEMORY:
if (s->reset_enable) {
reset_memory(s);
}
break;
default:
qemu_log_mask(LOG_GUEST_ERROR, "M25P80: Unknown cmd %x\n", value);
break;
@ -647,6 +677,13 @@ static int m25p80_init(SSISlave *ss)
return 0;
}
static void m25p80_reset(DeviceState *d)
{
Flash *s = M25P80(d);
reset_memory(s);
}
static void m25p80_pre_save(void *opaque)
{
flash_sync_dirty((Flash *)opaque, -1);
@ -654,7 +691,7 @@ static void m25p80_pre_save(void *opaque)
static const VMStateDescription vmstate_m25p80 = {
.name = "xilinx_spi",
.version_id = 1,
.version_id = 2,
.minimum_version_id = 1,
.pre_save = m25p80_pre_save,
.fields = (VMStateField[]) {
@ -666,6 +703,7 @@ static const VMStateDescription vmstate_m25p80 = {
VMSTATE_UINT8(cmd_in_progress, Flash),
VMSTATE_UINT64(cur_addr, Flash),
VMSTATE_BOOL(write_enable, Flash),
VMSTATE_BOOL_V(reset_enable, Flash, 2),
VMSTATE_END_OF_LIST()
}
};
@ -681,6 +719,7 @@ static void m25p80_class_init(ObjectClass *klass, void *data)
k->set_cs = m25p80_cs;
k->cs_polarity = SSI_CS_LOW;
dc->vmsd = &vmstate_m25p80;
dc->reset = m25p80_reset;
mc->pi = data;
}