sc7280: Refactor QSPI driver

Refactor Qcom QSPI driver to separate common
and SoC specific driver code.

BUG=b:182963902
TEST=Validated on qualcomm sc7280 development board

Signed-off-by: Rajesh Patil <rajpat@codeaurora.org>
Change-Id: Ibe1dc3fe8bd71957ff8604ef4c9d97963100ccfb
Reviewed-on: https://review.coreboot.org/c/coreboot/+/55322
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Shelley Chen <shchen@google.com>

src/soc/qualcomm/sc7280/Kconfig

@@ -26,4 +26,13 @@ config VBOOT
 	select VBOOT_MUST_REQUEST_DISPLAY
 	select VBOOT_STARTS_IN_BOOTBLOCK
 
+config SC7280_QSPI
+	bool
+	default y if COMMON_CBFS_SPI_WRAPPER
+	prompt "Build Flash Using SPI-NOR"
+
+config BOOT_DEVICE_SPI_FLASH_BUS
+	int
+	default 16
+
 endif

src/soc/qualcomm/sc7280/Makefile.inc

@@ -1,10 +1,11 @@
 ifeq ($(CONFIG_SOC_QUALCOMM_SC7280),y)
 
 all-y += ../common/timer.c
-all-y += spi.c
 all-y += ../common/gpio.c
 all-y += ../common/clock.c
 all-y += clock.c
+all-y += ../common/spi.c
+all-$(CONFIG_SC7280_QSPI) += ../common/qspi.c
 
 ################################################################################
 bootblock-y += bootblock.c

src/soc/qualcomm/sc7280/bootblock.c

@@ -1,9 +1,11 @@
 /* SPDX-License-Identifier: GPL-2.0-only */
 
 #include <bootblock_common.h>
-#include <soc/mmu.h>
+#include <soc/clock.h>
+#include <soc/qspi_common.h>
 
 void bootblock_soc_init(void)
 {
-	sc7280_mmu_init();
+	clock_init();
+	quadspi_init(37500 * KHz);
 }

src/soc/qualcomm/sc7280/include/soc/addressmap.h

@@ -14,4 +14,14 @@
 #define SILVER_PLL_BASE			0x18280000
 #define TLMM_TILE_BASE			0x0F100000
 
+/* SC7280 QSPI GPIO PINS */
+#define QSPI_CS				GPIO(15)
+#define QSPI_DATA_0			GPIO(12)
+#define QSPI_DATA_1			GPIO(13)
+#define QSPI_CLK			GPIO(14)
+
+#define GPIO_FUNC_QSPI_DATA_0		GPIO12_FUNC_QSPI_DATA_0
+#define GPIO_FUNC_QSPI_DATA_1		GPIO13_FUNC_QSPI_DATA_1
+#define GPIO_FUNC_QSPI_CLK		GPIO14_FUNC_QSPI_CLK
+
 #endif /*  __SOC_QUALCOMM_SC7280_ADDRESS_MAP_H__ */

src/soc/qualcomm/sc7280/spi.c

@@ -1,16 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0-only */
-
-#include <spi-generic.h>
-#include <spi_flash.h>
-
-static const struct spi_ctrlr spi_ctrlr;
-
-const struct spi_ctrlr_buses spi_ctrlr_bus_map[] = {
-	{
-		.ctrlr = &spi_ctrlr,
-		.bus_start = CONFIG_BOOT_DEVICE_SPI_FLASH_BUS,
-		.bus_end = CONFIG_BOOT_DEVICE_SPI_FLASH_BUS,
-	},
-};
-
-const size_t spi_ctrlr_bus_map_count = ARRAY_SIZE(spi_ctrlr_bus_map);