[PATCH v2 2/2] arm: k3: j721e: add dynamic sf bus override support for j721e

[Vaishnav Achath <vaishnav.a@ti.com>]

implement overrides for spl_spi_boot_bus() and spl_spi_boot_cs()
lookup functions according to bootmode selection, so as to support
both QSPI and OSPI boot using the same build.

Signed-off-by: Vaishnav Achath <vaishnav.a@ti.com>
---
 arch/arm/mach-k3/j721e_init.c   | 17 +++++++++++++++++
 arch/arm/mach-k3/sysfw-loader.c |  4 ++--
 2 files changed, 19 insertions(+), 2 deletions(-)

diff --git a/arch/arm/mach-k3/j721e_init.c b/arch/arm/mach-k3/j721e_init.c
index f503f15f19..82391b5cf8 100644
--- a/arch/arm/mach-k3/j721e_init.c
+++ b/arch/arm/mach-k3/j721e_init.c
@@ -355,6 +355,23 @@ static u32 __get_primary_bootmedia(u32 main_devstat, u32 wkup_devstat)
 	return bootmode;
 }
 
+u32 spl_spi_boot_bus(void)
+{
+	u32 wkup_devstat = readl(CTRLMMR_WKUP_DEVSTAT);
+	u32 main_devstat = readl(CTRLMMR_MAIN_DEVSTAT);
+	u32 bootmode = ((wkup_devstat & WKUP_DEVSTAT_PRIMARY_BOOTMODE_MASK) >>
+			WKUP_DEVSTAT_PRIMARY_BOOTMODE_SHIFT) |
+			((main_devstat & MAIN_DEVSTAT_BOOT_MODE_B_MASK) << BOOT_MODE_B_SHIFT);
+
+	return (bootmode == BOOT_DEVICE_QSPI) ? 1 : 0;
+}
+
+/* both OSPI and QSPI flash are in CS0 */
+u32 spl_spi_boot_cs(void)
+{
+	return 0;
+}
+
 u32 spl_boot_device(void)
 {
 	u32 wkup_devstat = readl(CTRLMMR_WKUP_DEVSTAT);
diff --git a/arch/arm/mach-k3/sysfw-loader.c b/arch/arm/mach-k3/sysfw-loader.c
index 5e48c36ccd..8ff36759c1 100644
--- a/arch/arm/mach-k3/sysfw-loader.c
+++ b/arch/arm/mach-k3/sysfw-loader.c
@@ -324,9 +324,9 @@ static void *k3_sysfw_get_spi_addr(void)
 	struct udevice *dev;
 	fdt_addr_t addr;
 	int ret;
+	unsigned int sf_bus = spl_spi_boot_bus();
 
-	ret = uclass_find_device_by_seq(UCLASS_SPI, CONFIG_SF_DEFAULT_BUS,
-					&dev);
+	ret = uclass_find_device_by_seq(UCLASS_SPI, sf_bus, &dev);
 	if (ret)
 		return NULL;
 
-- 
2.17.1