mirror of https://gitee.com/openkylin/linux.git
75 lines
1.8 KiB
C
75 lines
1.8 KiB
C
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/*
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* Embedded Planet EP405 with PlanetCore firmware
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*
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* (c) Benjamin Herrenschmidt <benh@kernel.crashing.org>, IBM Corp,\
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*
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* Based on ep88xc.c by
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*
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* Scott Wood <scottwood@freescale.com>
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*
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* Copyright (c) 2007 Freescale Semiconductor, Inc.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 as published
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* by the Free Software Foundation.
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*/
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#include "ops.h"
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#include "stdio.h"
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#include "planetcore.h"
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#include "dcr.h"
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#include "4xx.h"
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#include "io.h"
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static char *table;
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static u64 mem_size;
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static void platform_fixups(void)
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{
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u64 val;
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void *nvrtc;
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dt_fixup_memory(0, mem_size);
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planetcore_set_mac_addrs(table);
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if (!planetcore_get_decimal(table, PLANETCORE_KEY_CRYSTAL_HZ, &val)) {
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printf("No PlanetCore crystal frequency key.\r\n");
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return;
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}
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ibm405gp_fixup_clocks(val, 0xa8c000);
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ibm4xx_quiesce_eth((u32 *)0xef600800, NULL);
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ibm4xx_fixup_ebc_ranges("/plb/ebc");
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if (!planetcore_get_decimal(table, PLANETCORE_KEY_KB_NVRAM, &val)) {
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printf("No PlanetCore NVRAM size key.\r\n");
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return;
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}
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nvrtc = finddevice("/plb/ebc/nvrtc@4,200000");
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if (nvrtc != NULL) {
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u32 reg[3] = { 4, 0x200000, 0};
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getprop(nvrtc, "reg", reg, 3);
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reg[2] = (val << 10) & 0xffffffff;
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setprop(nvrtc, "reg", reg, 3);
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}
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}
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void platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
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unsigned long r6, unsigned long r7)
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{
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table = (char *)r3;
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planetcore_prepare_table(table);
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if (!planetcore_get_decimal(table, PLANETCORE_KEY_MB_RAM, &mem_size))
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return;
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mem_size *= 1024 * 1024;
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simple_alloc_init(_end, mem_size - (unsigned long)_end, 32, 64);
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fdt_init(_dtb_start);
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planetcore_set_stdout_path(table);
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serial_console_init();
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platform_ops.fixups = platform_fixups;
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}
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