The ROM will not update the sw-info field, so we need to parse the
SBMR1.
This ports u-boot commit:
| commit d4e84f24a6815957b3a218166f214ca9a1c4a7de
| Author: Peng Fan <peng.fan@xxxxxxx>
| Date: Thu May 17 15:15:59 2018 +0800
|
| imx8m: add QSPI boot dev
|
| When boot type could not be detected from rom sw info,
| read sbmr1 to detect, here we only use it to detect FLEXSPI
| boot, because ROM not update it in rom sw info.
|
| Signed-off-by: Peng Fan <peng.fan@xxxxxxx>
Signed-off-by: Marco Felsch <m.felsch@xxxxxxxxxxxxxx>
---
arch/arm/mach-imx/boot.c | 17 +++++++++++++++++
1 file changed, 17 insertions(+)
diff --git a/arch/arm/mach-imx/boot.c b/arch/arm/mach-imx/boot.c
index a6322e4850..8800859bfb 100644
--- a/arch/arm/mach-imx/boot.c
+++ b/arch/arm/mach-imx/boot.c
@@ -243,6 +243,11 @@ static unsigned int imx8mp_get_bmod(uint32_t r)
return FIELD_GET(IMX8MP_SRC_SBMR_BMOD, r);
}
+static unsigned int imx8mm_get_bcfg(uint32_t r)
+{
+ return FIELD_GET(BOOT_CFG2(6, 4), r);
+}
+
static int imx53_bootsource_internal(uint32_t r)
{
return FIELD_GET(BOOT_CFG1(7, 4), r);
@@ -323,6 +328,7 @@ void imx53_boot_save_loc(void)
#define IMX6_SRC_GPR10 0x44
#define IMX6_BMOD_SERIAL 0b01
#define IMX6_BMOD_RESERVED 0b11
+#define IMX8MM_BCFG_FSPI 0b100
#define IMX8MP_BMOD_FUSES 0b0000
#define IMX8MP_BMOD_SERIAL 0b0001
#define IMX6_BMOD_FUSES 0b00
@@ -358,6 +364,11 @@ static bool imx8mp_bootsource_serial(uint32_t sbmr2)
!(sbmr2 & BT_FUSE_SEL));
}
+static bool imx8mm_bootsource_qspi(uint32_t sbmr1)
+{
+ return imx8mm_get_bcfg(sbmr1) == IMX8MM_BCFG_FSPI;
+}
+
static bool imx6_bootsource_serial_forced(uint32_t bootmode)
{
if (cpu_mx6_is_mx6ul() || cpu_mx6_is_mx6ull())
@@ -691,6 +702,7 @@ void imx8mm_get_boot_source(enum bootsource *src, int *instance)
{
unsigned long addr;
void __iomem *src_base = IOMEM(MX8MM_SRC_BASE_ADDR);
+ uint32_t sbmr1 = readl(src_base + 0x58);
uint32_t sbmr2 = readl(src_base + 0x70);
if (imx6_bootsource_serial(sbmr2)) {
@@ -698,6 +710,11 @@ void imx8mm_get_boot_source(enum bootsource *src, int *instance)
return;
}
+ if (imx8mm_bootsource_qspi(sbmr1)) {
+ *src = BOOTSOURCE_SPI; /* Really: qspi */
+ return;
+ }
+
addr = IMX8M_BOOT_SW_INFO_POINTER_ADDR_A0;
__imx7_get_boot_source(src, instance, addr, sbmr2);
--
2.30.2
