From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:52745) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1alHZJ-0004hJ-TQ for qemu-devel@nongnu.org; Wed, 30 Mar 2016 10:58:02 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1alHZI-00053n-Iz for qemu-devel@nongnu.org; Wed, 30 Mar 2016 10:58:01 -0400 Received: from orth.archaic.org.uk ([2001:8b0:1d0::2]:56293) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1alHZI-00050z-Bd for qemu-devel@nongnu.org; Wed, 30 Mar 2016 10:58:00 -0400 Received: from pm215 by orth.archaic.org.uk with local (Exim 4.84_2) (envelope-from ) id 1alHZD-0001Bf-72 for qemu-devel@nongnu.org; Wed, 30 Mar 2016 15:57:55 +0100 From: Peter Maydell Date: Wed, 30 Mar 2016 15:57:43 +0100 Message-Id: <1459349869-25448-12-git-send-email-peter.maydell@linaro.org> In-Reply-To: <1459349869-25448-1-git-send-email-peter.maydell@linaro.org> References: <1459349869-25448-1-git-send-email-peter.maydell@linaro.org> Subject: [Qemu-devel] [PULL 11/17] block: m25p80: Implemented FSR register List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org From: Marcin Krzeminski Implements FSR register, it is used for busy waits. Signed-off-by: Marcin Krzeminski Reviewed-by: Peter Crosthwaite Message-id: 1458719789-29868-10-git-send-email-marcin.krzeminski@nokia.com Signed-off-by: Peter Maydell --- hw/block/m25p80.c | 15 +++++++++++++++ 1 file changed, 15 insertions(+) diff --git a/hw/block/m25p80.c b/hw/block/m25p80.c index 1e615ca..479d4c5 100644 --- a/hw/block/m25p80.c +++ b/hw/block/m25p80.c @@ -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; -- 1.9.1