drivers/spi/spi_flash.c: Add SPI vendor IDs

Currently SPI vendor IDs are magic numbers in spi_flash.c. These definitions
are needed for AMD's fch_spi. So add the definitions to spi_generic.h and use
it at spi_flash.c

BUG=b:136595978
TEST=Build test of several platforms that don't use stoneyridge. Build and boot
grunt (using stoneyridge new fch_spi).

Change-Id: Ie39485d8c092151db8c9d88afaf02e19c507c93f
Signed-off-by: Richard Spiegel <richard.spiegel@silverbackltd.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/35240
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
Reviewed-by: Martin Roth <martinroth@google.com>

src/drivers/spi/spi_flash.c

@@ -282,38 +282,38 @@ static struct {
 } flashes[] = {
 	/* Keep it sorted by define name */
 #if CONFIG(SPI_FLASH_AMIC)
-	{ 0, 0x37, spi_flash_probe_amic, },
+	{ 0, VENDOR_ID_AMIC, spi_flash_probe_amic, },
 #endif
 #if CONFIG(SPI_FLASH_ATMEL)
-	{ 0, 0x1f, spi_flash_probe_atmel, },
+	{ 0, VENDOR_ID_ATMEL, spi_flash_probe_atmel, },
 #endif
 #if CONFIG(SPI_FLASH_EON)
-	{ 0, 0x1c, spi_flash_probe_eon, },
+	{ 0, VENDOR_ID_EON, spi_flash_probe_eon, },
 #endif
 #if CONFIG(SPI_FLASH_GIGADEVICE)
-	{ 0, 0xc8, spi_flash_probe_gigadevice, },
+	{ 0, VENDOR_ID_GIGADEVICE, spi_flash_probe_gigadevice, },
 #endif
 #if CONFIG(SPI_FLASH_MACRONIX)
-	{ 0, 0xc2, spi_flash_probe_macronix, },
+	{ 0, VENDOR_ID_MACRONIX, spi_flash_probe_macronix, },
 #endif
 #if CONFIG(SPI_FLASH_SPANSION)
-	{ 0, 0x01, spi_flash_probe_spansion, },
+	{ 0, VENDOR_ID_SPANSION, spi_flash_probe_spansion, },
 #endif
 #if CONFIG(SPI_FLASH_SST)
-	{ 0, 0xbf, spi_flash_probe_sst, },
+	{ 0, VENDOR_ID_SST, spi_flash_probe_sst, },
 #endif
 #if CONFIG(SPI_FLASH_STMICRO)
-	{ 0, 0x20, spi_flash_probe_stmicro, },
+	{ 0, VENDOR_ID_STMICRO, spi_flash_probe_stmicro, },
 #endif
 #if CONFIG(SPI_FLASH_WINBOND)
-	{ 0, 0xef, spi_flash_probe_winbond, },
+	{ 0, VENDOR_ID_WINBOND, spi_flash_probe_winbond, },
 #endif
 	/* Keep it sorted by best detection */
 #if CONFIG(SPI_FLASH_STMICRO)
-	{ 0, 0xff, spi_flash_probe_stmicro, },
+	{ 0, VENDOR_ID_STMICRO_FF, spi_flash_probe_stmicro, },
 #endif
 #if CONFIG(SPI_FLASH_ADESTO)
-	{ 0, 0x1f, spi_flash_probe_adesto, },
+	{ 0, VENDOR_ID_ADESTO, spi_flash_probe_adesto, },
 #endif
 };
 #define IDCODE_LEN (IDCODE_CONT_LEN + IDCODE_PART_LEN)

src/include/spi-generic.h

@@ -28,6 +28,19 @@
 #include <stdint.h>
 #include <stddef.h>
 
+/* SPI vendor IDs */
+#define VENDOR_ID_ADESTO			0x1f
+#define VENDOR_ID_AMIC				0x37
+#define VENDOR_ID_ATMEL				0x1f
+#define VENDOR_ID_EON				0x1c
+#define VENDOR_ID_GIGADEVICE			0xc8
+#define VENDOR_ID_MACRONIX			0xc2
+#define VENDOR_ID_SPANSION			0x01
+#define VENDOR_ID_SST				0xbf
+#define VENDOR_ID_STMICRO			0x20
+#define VENDOR_ID_STMICRO_FF			0xff
+#define VENDOR_ID_WINBOND			0xef
+
 /* Controller-specific definitions: */
 
 struct spi_ctrlr;