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authorHeiko Schocher <hs@denx.de>2009-09-23 07:56:08 +0200
committerWolfgang Denk <wd@denx.de>2009-09-25 01:22:13 +0200
commit3887c3fbdbbe6bbb4df60ed415c8e1ab9fe56b5e (patch)
tree45036f888029797df3058eb7c99c1fa2f6b22632 /cpu
parent7f625fc6d3ba8f890e843ac01717804c2462ed53 (diff)
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mucmc52, uc101: delete ata@3a00 node, if no CF card is detected
U-Boot can detect if an IDE device is present or not. If not, and this new config option is activated, U-Boot removes the ATA node from the DTS before booting Linux, so the Linux IDE driver does not probe the device and crash. This is needed for buggy hardware (uc101) where no pull down resistor is connected to the signal IDE5V_DD7. Signed-off-by: Heiko Schocher <hs@denx.de>
Diffstat (limited to 'cpu')
-rw-r--r--cpu/mpc5xxx/cpu.c20
1 files changed, 20 insertions, 0 deletions
diff --git a/cpu/mpc5xxx/cpu.c b/cpu/mpc5xxx/cpu.c
index f6258c7..efa64c7 100644
--- a/cpu/mpc5xxx/cpu.c
+++ b/cpu/mpc5xxx/cpu.c
@@ -40,6 +40,10 @@
#include <fdt_support.h>
#endif
+#if defined(CONFIG_OF_IDE_FIXUP)
+#include <ide.h>
+#endif
+
DECLARE_GLOBAL_DATA_PTR;
int checkcpu (void)
@@ -137,6 +141,22 @@ void ft_cpu_setup(void *blob, bd_t *bd)
do_fixup_by_path(blob, eth_path, "mac-address", enetaddr, 6, 0);
do_fixup_by_path(blob, eth_path, "local-mac-address", enetaddr, 6, 0);
#endif
+#if defined(CONFIG_OF_IDE_FIXUP)
+ if (!ide_device_present(0)) {
+ /* NO CF card detected -> delete ata node in DTS */
+ int nodeoffset = 0;
+ char nodename[] = "/soc5200@f0000000/ata@3a00";
+
+ nodeoffset = fdt_path_offset(blob, nodename);
+ if (nodeoffset >= 0) {
+ fdt_del_node(blob, nodeoffset);
+ } else {
+ printf("%s: cannot find %s node err:%s\n",
+ __func__, nodename, fdt_strerror(nodeoffset));
+ }
+ }
+
+#endif
}
#endif