Enable caches

[karo-tx-uboot.git] / doc / README.sh7757lcr

diff --git a/doc/README.sh7757lcr b/doc/README.sh7757lcr
index cae14e055f85abe3da0840d522772221dabb457c..37c1a7a98a9e6f2c6144709b9c7d30f7924784fc 100644 (file)
--- a/doc/README.sh7757lcr
+++ b/doc/README.sh7757lcr
@@ -62,3 +62,15 @@ You can write MAC address to SPI ROM.
                GETHERC ch0 = 00:00:87:6c:21:82
                GETHERC ch1 = 00:00:87:6c:21:83
 
+
+Update SPI ROM:
+============================
+
+1. Copy u-boot image to RAM area.
+2. Probe SPI device.
+   => sf probe 0
+   8192 KiB M25P64 at 0:0 is now current device
+3. Erase SPI ROM.
+   => sf erase 0 80000
+4. Write u-boot image to SPI ROM.
+   => sf write 0x89000000 0 80000