From e3ba6cd67fbb9147f9f375f4925a3e882f8060e2 Mon Sep 17 00:00:00 2001 From: Marcin Krzeminski Date: Mon, 27 Jun 2016 15:37:33 +0100 Subject: [PATCH] m25p80: Make a table for JEDEC ID. MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit Since it is now longer than 4. This work based on Pawel Lenkow changes and the kernel SPI framework. Signed-off-by: Marcin Krzeminski Reviewed-by: Cédric Le Goater Message-id: 1466755631-25201-3-git-send-email-marcin.krzeminski@nokia.com Signed-off-by: Peter Maydell --- hw/block/m25p80.c | 61 ++++++++++++++++++++++++++++++++++++++----------------- 1 file changed, 42 insertions(+), 19 deletions(-) diff --git a/hw/block/m25p80.c b/hw/block/m25p80.c index d6bde29..752c43e 100644 --- a/hw/block/m25p80.c +++ b/hw/block/m25p80.c @@ -53,12 +53,17 @@ /* 16 MiB max in 3 byte address mode */ #define MAX_3BYTES_SIZE 0x1000000 +#define SPI_NOR_MAX_ID_LEN 6 + typedef struct FlashPartInfo { const char *part_name; - /* jedec code. (jedec >> 16) & 0xff is the 1st byte, >> 8 the 2nd etc */ - uint32_t jedec; - /* extended jedec code */ - uint16_t ext_jedec; + /* + * This array stores the ID bytes. + * The first three bytes are the JEDIC ID. + * JEDEC ID zero means "no ID" (mostly older chips). + */ + uint8_t id[SPI_NOR_MAX_ID_LEN]; + uint8_t id_len; /* there is confusion between manufacturers as to what a sector is. In this * device model, a "sector" is the size that is erased by the ERASE_SECTOR * command (opcode 0xd8). @@ -70,11 +75,33 @@ typedef struct FlashPartInfo { } FlashPartInfo; /* adapted from linux */ - -#define INFO(_part_name, _jedec, _ext_jedec, _sector_size, _n_sectors, _flags)\ - .part_name = (_part_name),\ - .jedec = (_jedec),\ - .ext_jedec = (_ext_jedec),\ +/* Used when the "_ext_id" is two bytes at most */ +#define INFO(_part_name, _jedec_id, _ext_id, _sector_size, _n_sectors, _flags)\ + .part_name = _part_name,\ + .id = {\ + ((_jedec_id) >> 16) & 0xff,\ + ((_jedec_id) >> 8) & 0xff,\ + (_jedec_id) & 0xff,\ + ((_ext_id) >> 8) & 0xff,\ + (_ext_id) & 0xff,\ + },\ + .id_len = (!(_jedec_id) ? 0 : (3 + ((_ext_id) ? 2 : 0))),\ + .sector_size = (_sector_size),\ + .n_sectors = (_n_sectors),\ + .page_size = 256,\ + .flags = (_flags), + +#define INFO6(_part_name, _jedec_id, _ext_id, _sector_size, _n_sectors, _flags)\ + .part_name = _part_name,\ + .id = {\ + ((_jedec_id) >> 16) & 0xff,\ + ((_jedec_id) >> 8) & 0xff,\ + (_jedec_id) & 0xff,\ + ((_ext_id) >> 16) & 0xff,\ + ((_ext_id) >> 8) & 0xff,\ + (_ext_id) & 0xff,\ + },\ + .id_len = 6,\ .sector_size = (_sector_size),\ .n_sectors = (_n_sectors),\ .page_size = 256,\ @@ -360,7 +387,7 @@ typedef struct M25P80Class { static inline Manufacturer get_man(Flash *s) { - switch (((s->pi->jedec >> 16) & 0xFF)) { + switch (s->pi->id[0]) { case 0x20: return MAN_NUMONYX; case 0xEF: @@ -630,6 +657,7 @@ static void reset_memory(Flash *s) static void decode_new_cmd(Flash *s, uint32_t value) { s->cmd_in_progress = value; + int i; DB_PRINT_L(0, "decoded new command:%x\n", value); if (value != RESET_MEMORY) { @@ -743,16 +771,11 @@ static void decode_new_cmd(Flash *s, uint32_t value) case JEDEC_READ: DB_PRINT_L(0, "populated jedec code\n"); - s->data[0] = (s->pi->jedec >> 16) & 0xff; - s->data[1] = (s->pi->jedec >> 8) & 0xff; - s->data[2] = s->pi->jedec & 0xff; - if (s->pi->ext_jedec) { - s->data[3] = (s->pi->ext_jedec >> 8) & 0xff; - s->data[4] = s->pi->ext_jedec & 0xff; - s->len = 5; - } else { - s->len = 3; + for (i = 0; i < s->pi->id_len; i++) { + s->data[i] = s->pi->id[i]; } + + s->len = s->pi->id_len; s->pos = 0; s->state = STATE_READING_DATA; break; -- 2.7.4