Hi Tim,
On 04/28/2014 01:17 PM, Tim Harvey wrote:
Add a common spl.c file to support boot device functions needed for SPL
such as detecting the boot device.
<snip>
>
diff --git a/arch/arm/imx-common/spl.c b/arch/arm/imx-common/spl.c
new file mode 100644
index 0000000..5c1667c
--- /dev/null
+++ b/arch/arm/imx-common/spl.c
@@ -0,0 +1,79 @@
> <snip>
>
+u32 spl_boot_device(void)
+{
+ struct src *psrc = (struct src *)SRC_BASE_ADDR;
+ unsigned reg = readl(&psrc->sbmr1);
+
+ /* BOOT_CFG1[7:4] - see IMX6DQRM Table 8-8 */
+ switch ((reg & 0x000000FF) >> 4) {
>
> <snip>
>
+ case 0x3:
+ /* BOOT_CFG4[2:0] */
+ switch ((reg & 0x07000000) >> 24) {
This made me want a language lawyer, although I do see case
ranges used in arch/blackfin/cpu/traps.c
+ case 0x0 ... 0x4:
+ return BOOT_DEVICE_SPI;
+ case 0x5 ... 0x7:
+ return BOOT_DEVICE_I2C;
+ }
Regards,
Eric
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