The current ICH SPI preop handling is a hack which spews lots of warnings, but still yields correct results

With the multicommand infrastructure I introduced in r645, it became
possible to integrate ICH SPI preopcodes cleanly into the flashrom
design.

The new code checks for every opcode in a multicommand array if it is a
preopcode. If yes, it checks if the next opcode is associated with that
preopcode and in that case it simply runs the opcode because the correct
preopcode will be run automatically before the opcode.

Corresponding to flashrom svn r727.

Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>
Acked-by: FENG Yu Ning <fengyuning1984@gmail.com>

1 files changed, 22 insertions, 23 deletions

diff --git a/spi.c b/spi.c
index 73709f2..8b3f6d9 100644
--- a/spi.c
+++ b/spi.c
@@ -118,7 +118,7 @@ int spi_send_command(unsigned int writecnt, unsigned int readcnt,
 						      writearr, readarr);
 }
 
-int spi_send_multicommand(struct spi_command *spicommands)
+int spi_send_multicommand(struct spi_command *cmds)
 {
 	if (!spi_programmer[spi_controller].multicommand) {
 		fprintf(stderr, "%s called, but SPI is unsupported on this "
@@ -126,7 +126,7 @@ int spi_send_multicommand(struct spi_command *spicommands)
 		return 1;
 	}
 
-	return spi_programmer[spi_controller].multicommand(spicommands);
+	return spi_programmer[spi_controller].multicommand(cmds);
 }
 
 int default_spi_send_command(unsigned int writecnt, unsigned int readcnt,
@@ -148,13 +148,12 @@ int default_spi_send_command(unsigned int writecnt, unsigned int readcnt,
 	return spi_send_multicommand(cmd);
 }
 
-int default_spi_send_multicommand(struct spi_command *spicommands)
+int default_spi_send_multicommand(struct spi_command *cmds)
 {
 	int result = 0;
-	while ((spicommands->writecnt || spicommands->readcnt) && !result) {
-		result = spi_send_command(spicommands->writecnt, spicommands->readcnt,
-					  spicommands->writearr, spicommands->readarr);
-		spicommands++;
+	for (; (cmds->writecnt || cmds->readcnt) && !result; cmds++) {
+		result = spi_send_command(cmds->writecnt, cmds->readcnt,
+					  cmds->writearr, cmds->readarr);
 	}
 	return result;
 }
@@ -494,7 +493,7 @@ void spi_prettyprint_status_register(struct flashchip *flash)
 int spi_chip_erase_60(struct flashchip *flash)
 {
 	int result;
-	struct spi_command spicommands[] = {
+	struct spi_command cmds[] = {
 	{
 		.writecnt	= JEDEC_WREN_OUTSIZE,
 		.writearr	= (const unsigned char[]){ JEDEC_WREN },
@@ -518,7 +517,7 @@ int spi_chip_erase_60(struct flashchip *flash)
 		return result;
 	}
 	
-	result = spi_send_multicommand(spicommands);
+	result = spi_send_multicommand(cmds);
 	if (result) {
 		fprintf(stderr, "%s failed during command execution\n",
 			__func__);
@@ -540,7 +539,7 @@ int spi_chip_erase_60(struct flashchip *flash)
 int spi_chip_erase_c7(struct flashchip *flash)
 {
 	int result;
-	struct spi_command spicommands[] = {
+	struct spi_command cmds[] = {
 	{
 		.writecnt	= JEDEC_WREN_OUTSIZE,
 		.writearr	= (const unsigned char[]){ JEDEC_WREN },
@@ -564,7 +563,7 @@ int spi_chip_erase_c7(struct flashchip *flash)
 		return result;
 	}
 
-	result = spi_send_multicommand(spicommands);
+	result = spi_send_multicommand(cmds);
 	if (result) {
 		fprintf(stderr, "%s failed during command execution\n", __func__);
 		return result;
@@ -596,7 +595,7 @@ int spi_chip_erase_60_c7(struct flashchip *flash)
 int spi_block_erase_52(struct flashchip *flash, unsigned int addr, unsigned int blocklen)
 {
 	int result;
-	struct spi_command spicommands[] = {
+	struct spi_command cmds[] = {
 	{
 		.writecnt	= JEDEC_WREN_OUTSIZE,
 		.writearr	= (const unsigned char[]){ JEDEC_WREN },
@@ -614,7 +613,7 @@ int spi_block_erase_52(struct flashchip *flash, unsigned int addr, unsigned int
 		.readarr	= NULL,
 	}};
 
-	result = spi_send_multicommand(spicommands);
+	result = spi_send_multicommand(cmds);
 	if (result) {
 		fprintf(stderr, "%s failed during command execution\n",
 			__func__);
@@ -640,7 +639,7 @@ int spi_block_erase_52(struct flashchip *flash, unsigned int addr, unsigned int
 int spi_block_erase_d8(struct flashchip *flash, unsigned int addr, unsigned int blocklen)
 {
 	int result;
-	struct spi_command spicommands[] = {
+	struct spi_command cmds[] = {
 	{
 		.writecnt	= JEDEC_WREN_OUTSIZE,
 		.writearr	= (const unsigned char[]){ JEDEC_WREN },
@@ -658,7 +657,7 @@ int spi_block_erase_d8(struct flashchip *flash, unsigned int addr, unsigned int
 		.readarr	= NULL,
 	}};
 
-	result = spi_send_multicommand(spicommands);
+	result = spi_send_multicommand(cmds);
 	if (result) {
 		fprintf(stderr, "%s failed during command execution\n", __func__);
 		return result;
@@ -702,7 +701,7 @@ int spi_chip_erase_d8(struct flashchip *flash)
 int spi_block_erase_20(struct flashchip *flash, unsigned int addr, unsigned int blocklen)
 {
 	int result;
-	struct spi_command spicommands[] = {
+	struct spi_command cmds[] = {
 	{
 		.writecnt	= JEDEC_WREN_OUTSIZE,
 		.writearr	= (const unsigned char[]){ JEDEC_WREN },
@@ -720,7 +719,7 @@ int spi_block_erase_20(struct flashchip *flash, unsigned int addr, unsigned int
 		.readarr	= NULL,
 	}};
 
-	result = spi_send_multicommand(spicommands);
+	result = spi_send_multicommand(cmds);
 	if (result) {
 		fprintf(stderr, "%s failed during command execution\n",
 			__func__);
@@ -779,7 +778,7 @@ int spi_write_status_enable(void)
 int spi_write_status_register(int status)
 {
 	int result;
-	struct spi_command spicommands[] = {
+	struct spi_command cmds[] = {
 	{
 		.writecnt	= JEDEC_EWSR_OUTSIZE,
 		.writearr	= (const unsigned char[]){ JEDEC_EWSR },
@@ -797,7 +796,7 @@ int spi_write_status_register(int status)
 		.readarr	= NULL,
 	}};
 
-	result = spi_send_multicommand(spicommands);
+	result = spi_send_multicommand(cmds);
 	if (result) {
 		fprintf(stderr, "%s failed during command execution\n",
 			__func__);
@@ -808,7 +807,7 @@ int spi_write_status_register(int status)
 int spi_byte_program(int addr, uint8_t byte)
 {
 	int result;
-	struct spi_command spicommands[] = {
+	struct spi_command cmds[] = {
 	{
 		.writecnt	= JEDEC_WREN_OUTSIZE,
 		.writearr	= (const unsigned char[]){ JEDEC_WREN },
@@ -826,7 +825,7 @@ int spi_byte_program(int addr, uint8_t byte)
 		.readarr	= NULL,
 	}};
 
-	result = spi_send_multicommand(spicommands);
+	result = spi_send_multicommand(cmds);
 	if (result) {
 		fprintf(stderr, "%s failed during command execution\n",
 			__func__);
@@ -844,7 +843,7 @@ int spi_nbyte_program(int address, uint8_t *bytes, int len)
 		(address >> 8) & 0xff,
 		(address >> 0) & 0xff,
 	};
-	struct spi_command spicommands[] = {
+	struct spi_command cmds[] = {
 	{
 		.writecnt	= JEDEC_WREN_OUTSIZE,
 		.writearr	= (const unsigned char[]){ JEDEC_WREN },
@@ -873,7 +872,7 @@ int spi_nbyte_program(int address, uint8_t *bytes, int len)
 
 	memcpy(&cmd[4], bytes, len);
 
-	result = spi_send_multicommand(spicommands);
+	result = spi_send_multicommand(cmds);
 	if (result) {
 		fprintf(stderr, "%s failed during command execution\n",
 			__func__);