u-boot-brain/arch/powerpc/cpu/mpc86xx/fdt.c
York Sun eb53941206 powerpc/mpc85xx: software workaround for DDR erratum A-004468
Boot space translation utilizes the pre-translation address to select
the DDR controller target. However, the post-translation address will be
presented to the selected DDR controller. It is possible that the pre-
translation address selects one DDR controller but the post-translation
address exists in a different DDR controller when using certain DDR
controller interleaving modes. The device may fail to boot under these
circumstances. Note that a DDR MSE error will not be detected since DDR
controller bounds registers are programmed to be the same when configured
for DDR controller interleaving.

Signed-off-by: York Sun <yorksun@freescale.com>
Signed-off-by: Andy Fleming <afleming@freescale.com>
2012-10-22 14:31:28 -05:00

67 lines
1.8 KiB
C

/*
* Copyright 2008, 2011 Freescale Semiconductor, Inc.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* Version 2 as published by the Free Software Foundation.
*/
#include <common.h>
#include <libfdt.h>
#include <fdt_support.h>
#include <asm/mp.h>
DECLARE_GLOBAL_DATA_PTR;
extern void ft_fixup_num_cores(void *blob);
extern void ft_srio_setup(void *blob);
void ft_cpu_setup(void *blob, bd_t *bd)
{
#ifdef CONFIG_MP
int off;
u32 bootpg = determine_mp_bootpg(NULL);
#endif
do_fixup_by_prop_u32(blob, "device_type", "cpu", 4,
"timebase-frequency", bd->bi_busfreq / 4, 1);
do_fixup_by_prop_u32(blob, "device_type", "cpu", 4,
"bus-frequency", bd->bi_busfreq, 1);
do_fixup_by_prop_u32(blob, "device_type", "cpu", 4,
"clock-frequency", bd->bi_intfreq, 1);
do_fixup_by_prop_u32(blob, "device_type", "soc", 4,
"bus-frequency", bd->bi_busfreq, 1);
#if defined(CONFIG_MPC8641)
do_fixup_by_compat_u32(blob, "fsl,mpc8641-localbus",
"bus-frequency", gd->lbc_clk, 1);
#endif
do_fixup_by_compat_u32(blob, "fsl,elbc",
"bus-frequency", gd->lbc_clk, 1);
fdt_fixup_memory(blob, (u64)bd->bi_memstart, (u64)bd->bi_memsize);
#if defined(CONFIG_HAS_ETH0) || defined(CONFIG_HAS_ETH1) \
|| defined(CONFIG_HAS_ETH2) || defined(CONFIG_HAS_ETH3)
fdt_fixup_ethernet(blob);
#endif
#ifdef CONFIG_SYS_NS16550
do_fixup_by_compat_u32(blob, "ns16550",
"clock-frequency", CONFIG_SYS_NS16550_CLK, 1);
#endif
#ifdef CONFIG_MP
/* Reserve the boot page so OSes dont use it */
off = fdt_add_mem_rsv(blob, bootpg, (u64)4096);
if (off < 0)
printf("%s: %s\n", __FUNCTION__, fdt_strerror(off));
ft_fixup_num_cores(blob);
#endif
#ifdef CONFIG_SYS_SRIO
ft_srio_setup(blob);
#endif
}