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

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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>
This commit is contained in:
York Sun 2014-04-30 14:43:45 -07:00
parent 18025756b5
commit 73a56b6e9f
1 changed files with 2 additions and 0 deletions
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2
arch/powerpc/cpu/mpc85xx/cpu_init_early.c
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@ -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);