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iriver_flash: make cfi_read_id use FB directly

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Change-Id: Id747b0846515443871a0df10d83e3b1fc4731e7c
This commit is contained in:
James Buren 2020-10-27 16:00:52 +00:00
parent e5b963b8e1
commit bee736f3ea
1 changed files with 10 additions and 12 deletions
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22
apps/plugins/iriver_flash.c
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@ -67,26 +67,24 @@ static volatile uint16_t* FB = (uint16_t*)0x00000000; /* Flash base address */
#endif #endif
/* read the manufacturer and device ID */ /* read the manufacturer and device ID */
bool cfi_read_id(volatile uint16_t* pBase, uint8_t* pManufacturerID, uint8_t* pDeviceID) bool cfi_read_id(uint8_t* pManufacturerID, uint8_t* pDeviceID)
{ {
uint8_t not_manu, not_id; /* read values before switching to ID mode */ uint8_t not_manu, not_id; /* read values before switching to ID mode */
uint8_t manu, id; /* read values when in ID mode */ uint8_t manu, id; /* read values when in ID mode */
pBase = (uint16_t*)((uint32_t)pBase & 0xFFF80000); /* down to 512k align */
/* read the normal content */ /* read the normal content */
not_manu = pBase[0]; /* should be 'A' (0x41) and 'R' (0x52) */ not_manu = FB[0]; /* should be 'A' (0x41) and 'R' (0x52) */
not_id = pBase[1]; /* from the "ARCH" marker */ not_id = FB[1]; /* from the "ARCH" marker */
pBase[0x5555] = 0xAA; /* enter command mode */ FB[0x5555] = 0xAA; /* enter command mode */
pBase[0x2AAA] = 0x55; FB[0x2AAA] = 0x55;
pBase[0x5555] = 0x90; /* ID command */ FB[0x5555] = 0x90; /* ID command */
rb->sleep(HZ/50); /* Atmel wants 20ms pause here */ rb->sleep(HZ/50); /* Atmel wants 20ms pause here */
manu = pBase[0]; manu = FB[0];
id = pBase[1]; id = FB[1];
pBase[0] = 0xF0; /* reset flash (back to normal read mode) */ FB[0] = 0xF0; /* reset flash (back to normal read mode) */
rb->sleep(HZ/50); /* Atmel wants 20ms pause here */ rb->sleep(HZ/50); /* Atmel wants 20ms pause here */
/* I assume success if the obtained values are different from /* I assume success if the obtained values are different from
@ -149,7 +147,7 @@ bool cfi_get_flash_info(struct flash_info* pInfo)
{ {
rb->memset(pInfo, 0, sizeof(struct flash_info)); rb->memset(pInfo, 0, sizeof(struct flash_info));
if (!cfi_read_id(FB, &pInfo->manufacturer, &pInfo->id)) if (!cfi_read_id(&pInfo->manufacturer, &pInfo->id))
return false; return false;
if (pInfo->manufacturer == 0xBF) /* SST */ if (pInfo->manufacturer == 0xBF) /* SST */