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