ep405.c
1.76 KB
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/*
* Embedded Planet EP405 with PlanetCore firmware
*
* (c) Benjamin Herrenschmidt <benh@kernel.crashing.org>, IBM Corp,\
*
* Based on ep88xc.c by
*
* Scott Wood <scottwood@freescale.com>
*
* Copyright (c) 2007 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 "ops.h"
#include "stdio.h"
#include "planetcore.h"
#include "dcr.h"
#include "4xx.h"
#include "io.h"
static char *table;
static u64 mem_size;
static void platform_fixups(void)
{
u64 val;
void *nvrtc;
dt_fixup_memory(0, mem_size);
planetcore_set_mac_addrs(table);
if (!planetcore_get_decimal(table, PLANETCORE_KEY_CRYSTAL_HZ, &val)) {
printf("No PlanetCore crystal frequency key.\r\n");
return;
}
ibm405gp_fixup_clocks(val, 0xa8c000);
ibm4xx_quiesce_eth((u32 *)0xef600800, NULL);
ibm4xx_fixup_ebc_ranges("/plb/ebc");
if (!planetcore_get_decimal(table, PLANETCORE_KEY_KB_NVRAM, &val)) {
printf("No PlanetCore NVRAM size key.\r\n");
return;
}
nvrtc = finddevice("/plb/ebc/nvrtc@4,200000");
if (nvrtc != NULL) {
u32 reg[3] = { 4, 0x200000, 0};
getprop(nvrtc, "reg", reg, 3);
reg[2] = (val << 10) & 0xffffffff;
setprop(nvrtc, "reg", reg, 3);
}
}
void platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
unsigned long r6, unsigned long r7)
{
table = (char *)r3;
planetcore_prepare_table(table);
if (!planetcore_get_decimal(table, PLANETCORE_KEY_MB_RAM, &mem_size))
return;
mem_size *= 1024 * 1024;
simple_alloc_init(_end, mem_size - (unsigned long)_end, 32, 64);
fdt_init(_dtb_start);
planetcore_set_stdout_path(table);
serial_console_init();
platform_ops.fixups = platform_fixups;
}