80 lines
2.0 KiB
C
80 lines
2.0 KiB
C
/*
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* Copyright (C) 2013 Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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*/
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#include <common.h>
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#include <init.h>
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#include <io.h>
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#include <asm/memory.h>
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#include <linux/mbus.h>
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#include <mach/kirkwood-regs.h>
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static inline void kirkwood_memory_find(unsigned long *phys_base,
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unsigned long *phys_size)
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{
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int cs;
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*phys_base = ~0;
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*phys_size = 0;
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for (cs = 0; cs < 4; cs++) {
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u32 base = readl(KIRKWOOD_SDRAM_BASE + DDR_BASE_CSn(cs));
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u32 ctrl = readl(KIRKWOOD_SDRAM_BASE + DDR_SIZE_CSn(cs));
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/* Skip non-enabled CS */
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if ((ctrl & DDR_SIZE_ENABLED) != DDR_SIZE_ENABLED)
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continue;
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base &= DDR_BASE_CS_LOW_MASK;
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if (base < *phys_base)
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*phys_base = base;
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*phys_size += (ctrl | ~DDR_SIZE_MASK) + 1;
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}
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}
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static void __noreturn kirkwood_reset_cpu(unsigned long addr)
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{
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writel(SOFT_RESET_OUT_EN, KIRKWOOD_BRIDGE_BASE + BRIDGE_RSTOUT_MASK);
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writel(SOFT_RESET_EN, KIRKWOOD_BRIDGE_BASE + BRIDGE_SYS_SOFT_RESET);
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for(;;)
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;
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}
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static int kirkwood_init_soc(struct device_node *root, void *context)
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{
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unsigned long phys_base, phys_size;
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if (!of_machine_is_compatible("marvell,kirkwood"))
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return 0;
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mvebu_set_reset(kirkwood_reset_cpu);
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barebox_set_model("Marvell Kirkwood");
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barebox_set_hostname("kirkwood");
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kirkwood_memory_find(&phys_base, &phys_size);
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mvebu_set_memory(phys_base, phys_size);
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return 0;
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}
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static int kirkwood_register_soc_fixup(void)
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{
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mvebu_mbus_add_range("marvell,kirkwood", 0xf0, 0x01,
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MVEBU_REMAP_INT_REG_BASE);
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return of_register_fixup(kirkwood_init_soc, NULL);
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}
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pure_initcall(kirkwood_register_soc_fixup);
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