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-rw-r--r--arch/powerpc/cpu/mpc85xx/fdt.c48
1 files changed, 39 insertions, 9 deletions
diff --git a/arch/powerpc/cpu/mpc85xx/fdt.c b/arch/powerpc/cpu/mpc85xx/fdt.c
index 62c7ea1..977770e 100644
--- a/arch/powerpc/cpu/mpc85xx/fdt.c
+++ b/arch/powerpc/cpu/mpc85xx/fdt.c
@@ -688,6 +688,12 @@ void ft_cpu_setup(void *blob, bd_t *bd)
#define CCSR_VIRT_TO_PHYS(x) \
(CONFIG_SYS_CCSRBAR_PHYS + ((x) - CONFIG_SYS_CCSRBAR))
+static void msg(const char *name, uint64_t uaddr, uint64_t daddr)
+{
+ printf("Warning: U-Boot configured %s at address %llx,\n"
+ "but the device tree has it at %llx\n", name, uaddr, daddr);
+}
+
/*
* Verify the device tree
*
@@ -703,33 +709,32 @@ void ft_cpu_setup(void *blob, bd_t *bd)
*/
int ft_verify_fdt(void *fdt)
{
- uint64_t ccsr = 0;
+ uint64_t addr = 0;
int aliases;
int off;
/* First check the CCSR base address */
off = fdt_node_offset_by_prop_value(fdt, -1, "device_type", "soc", 4);
if (off > 0)
- ccsr = fdt_get_base_address(fdt, off);
+ addr = fdt_get_base_address(fdt, off);
- if (!ccsr) {
+ if (!addr) {
printf("Warning: could not determine base CCSR address in "
"device tree\n");
/* No point in checking anything else */
return 0;
}
- if (ccsr != CONFIG_SYS_CCSRBAR_PHYS) {
- printf("Warning: U-Boot configured CCSR at address %llx,\n"
- "but the device tree has it at %llx\n",
- (uint64_t) CONFIG_SYS_CCSRBAR_PHYS, ccsr);
+ if (addr != CONFIG_SYS_CCSRBAR_PHYS) {
+ msg("CCSR", CONFIG_SYS_CCSRBAR_PHYS, addr);
/* No point in checking anything else */
return 0;
}
/*
- * Get the 'aliases' node. If there isn't one, then there's nothing
- * left to do.
+ * Check some nodes via aliases. We assume that U-Boot and the device
+ * tree enumerate the devices equally. E.g. the first serial port in
+ * U-Boot is the same as "serial0" in the device tree.
*/
aliases = fdt_path_offset(fdt, "/aliases");
if (aliases > 0) {
@@ -746,5 +751,30 @@ int ft_verify_fdt(void *fdt)
#endif
}
+ /*
+ * The localbus node is typically a root node, even though the lbc
+ * controller is part of CCSR. If we were to put the lbc node under
+ * the SOC node, then the 'ranges' property in the lbc node would
+ * translate through the 'ranges' property of the parent SOC node, and
+ * we don't want that. Since it's a separate node, it's possible for
+ * the 'reg' property to be wrong, so check it here. For now, we
+ * only check for "fsl,elbc" nodes.
+ */
+#ifdef CONFIG_SYS_LBC_ADDR
+ off = fdt_node_offset_by_compatible(fdt, -1, "fsl,elbc");
+ if (off > 0) {
+ const u32 *reg = fdt_getprop(fdt, off, "reg", NULL);
+ if (reg) {
+ uint64_t uaddr = CCSR_VIRT_TO_PHYS(CONFIG_SYS_LBC_ADDR);
+
+ addr = fdt_translate_address(fdt, off, reg);
+ if (uaddr != addr) {
+ msg("the localbus", uaddr, addr);
+ return 0;
+ }
+ }
+ }
+#endif
+
return 1;
}