From: York Sun <yorksun@freescale.com>
Date: Wed, 30 Apr 2014 21:43:45 +0000 (-0700)
Subject: powerpc/mpc85xx: Ignore FDT pointer for non-QEMU in cpu_init_early_f()
X-Git-Url: http://git.dujemihanovic.xyz/login.html?a=commitdiff_plain;h=73a56b6e9f3f1cc2412b5b8a75a3c71f48586c94;p=u-boot.git

powerpc/mpc85xx: Ignore FDT pointer for non-QEMU in cpu_init_early_f()

The pointer of device tree comes from r3 for QEMU. This is not the case
for normal SoCs out of reset. Having gd->fdt_blob as 0 is important for
other functions to detect the non-existence of device tree.

Signed-off-by: York Sun <yorksun@freescale.com>
CC: Alexander Graf <agraf@suse.de>
---

diff --git a/arch/powerpc/cpu/mpc85xx/cpu_init_early.c b/arch/powerpc/cpu/mpc85xx/cpu_init_early.c
index 998781b706..47b712d56b 100644
--- a/arch/powerpc/cpu/mpc85xx/cpu_init_early.c
+++ b/arch/powerpc/cpu/mpc85xx/cpu_init_early.c
@@ -102,11 +102,13 @@ void cpu_init_early_f(void *fdt)
 	for (i = 0; i < sizeof(gd_t); i++)
 		((char *)gd)[i] = 0;
 
+#ifdef CONFIG_QEMU_E500
 	/*
 	 * CONFIG_SYS_CCSRBAR_PHYS below may use gd->fdt_blob on ePAPR systems,
 	 * so we need to populate it before it accesses it.
 	 */
 	gd->fdt_blob = fdt;
+#endif
 
 	mas0 = MAS0_TLBSEL(1) | MAS0_ESEL(13);
 	mas1 = MAS1_VALID | MAS1_TID(0) | MAS1_TS | MAS1_TSIZE(BOOKE_PAGESZ_1M);