158 lines
4.0 KiB
C
158 lines
4.0 KiB
C
/*
|
|
* Board setup routines for the Motorola PrPMC2800
|
|
*
|
|
* Author: Dale Farnsworth <dale@farnsworth.org>
|
|
*
|
|
* 2007 (c) MontaVista, Software, Inc. This file is licensed under
|
|
* the terms of the GNU General Public License version 2. This program
|
|
* is licensed "as is" without any warranty of any kind, whether express
|
|
* or implied.
|
|
*/
|
|
|
|
#include <linux/stddef.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/delay.h>
|
|
#include <linux/interrupt.h>
|
|
#include <linux/seq_file.h>
|
|
|
|
#include <asm/machdep.h>
|
|
#include <asm/prom.h>
|
|
#include <asm/system.h>
|
|
#include <asm/time.h>
|
|
|
|
#include <mm/mmu_decl.h>
|
|
|
|
#include <sysdev/mv64x60.h>
|
|
|
|
#define MV64x60_MPP_CNTL_0 0x0000
|
|
#define MV64x60_MPP_CNTL_2 0x0008
|
|
|
|
#define MV64x60_GPP_IO_CNTL 0x0000
|
|
#define MV64x60_GPP_LEVEL_CNTL 0x0010
|
|
#define MV64x60_GPP_VALUE_SET 0x0018
|
|
|
|
#define PLATFORM_NAME_MAX 32
|
|
|
|
static char prpmc2800_platform_name[PLATFORM_NAME_MAX];
|
|
|
|
static void __iomem *mv64x60_mpp_reg_base;
|
|
static void __iomem *mv64x60_gpp_reg_base;
|
|
|
|
static void __init prpmc2800_setup_arch(void)
|
|
{
|
|
struct device_node *np;
|
|
phys_addr_t paddr;
|
|
const unsigned int *reg;
|
|
|
|
/*
|
|
* ioremap mpp and gpp registers in case they are later
|
|
* needed by prpmc2800_reset_board().
|
|
*/
|
|
np = of_find_compatible_node(NULL, NULL, "marvell,mv64360-mpp");
|
|
reg = of_get_property(np, "reg", NULL);
|
|
paddr = of_translate_address(np, reg);
|
|
of_node_put(np);
|
|
mv64x60_mpp_reg_base = ioremap(paddr, reg[1]);
|
|
|
|
np = of_find_compatible_node(NULL, NULL, "marvell,mv64360-gpp");
|
|
reg = of_get_property(np, "reg", NULL);
|
|
paddr = of_translate_address(np, reg);
|
|
of_node_put(np);
|
|
mv64x60_gpp_reg_base = ioremap(paddr, reg[1]);
|
|
|
|
#ifdef CONFIG_PCI
|
|
mv64x60_pci_init();
|
|
#endif
|
|
|
|
printk("Motorola %s\n", prpmc2800_platform_name);
|
|
}
|
|
|
|
static void prpmc2800_reset_board(void)
|
|
{
|
|
u32 temp;
|
|
|
|
local_irq_disable();
|
|
|
|
temp = in_le32(mv64x60_mpp_reg_base + MV64x60_MPP_CNTL_0);
|
|
temp &= 0xFFFF0FFF;
|
|
out_le32(mv64x60_mpp_reg_base + MV64x60_MPP_CNTL_0, temp);
|
|
|
|
temp = in_le32(mv64x60_gpp_reg_base + MV64x60_GPP_LEVEL_CNTL);
|
|
temp |= 0x00000004;
|
|
out_le32(mv64x60_gpp_reg_base + MV64x60_GPP_LEVEL_CNTL, temp);
|
|
|
|
temp = in_le32(mv64x60_gpp_reg_base + MV64x60_GPP_IO_CNTL);
|
|
temp |= 0x00000004;
|
|
out_le32(mv64x60_gpp_reg_base + MV64x60_GPP_IO_CNTL, temp);
|
|
|
|
temp = in_le32(mv64x60_mpp_reg_base + MV64x60_MPP_CNTL_2);
|
|
temp &= 0xFFFF0FFF;
|
|
out_le32(mv64x60_mpp_reg_base + MV64x60_MPP_CNTL_2, temp);
|
|
|
|
temp = in_le32(mv64x60_gpp_reg_base + MV64x60_GPP_LEVEL_CNTL);
|
|
temp |= 0x00080000;
|
|
out_le32(mv64x60_gpp_reg_base + MV64x60_GPP_LEVEL_CNTL, temp);
|
|
|
|
temp = in_le32(mv64x60_gpp_reg_base + MV64x60_GPP_IO_CNTL);
|
|
temp |= 0x00080000;
|
|
out_le32(mv64x60_gpp_reg_base + MV64x60_GPP_IO_CNTL, temp);
|
|
|
|
out_le32(mv64x60_gpp_reg_base + MV64x60_GPP_VALUE_SET, 0x00080004);
|
|
}
|
|
|
|
static void prpmc2800_restart(char *cmd)
|
|
{
|
|
volatile ulong i = 10000000;
|
|
|
|
prpmc2800_reset_board();
|
|
|
|
while (i-- > 0);
|
|
panic("restart failed\n");
|
|
}
|
|
|
|
#ifdef CONFIG_NOT_COHERENT_CACHE
|
|
#define PPRPM2800_COHERENCY_SETTING "off"
|
|
#else
|
|
#define PPRPM2800_COHERENCY_SETTING "on"
|
|
#endif
|
|
|
|
void prpmc2800_show_cpuinfo(struct seq_file *m)
|
|
{
|
|
seq_printf(m, "Vendor\t\t: Motorola\n");
|
|
seq_printf(m, "coherency\t: %s\n", PPRPM2800_COHERENCY_SETTING);
|
|
}
|
|
|
|
/*
|
|
* Called very early, device-tree isn't unflattened
|
|
*/
|
|
static int __init prpmc2800_probe(void)
|
|
{
|
|
unsigned long root = of_get_flat_dt_root();
|
|
unsigned long len = PLATFORM_NAME_MAX;
|
|
void *m;
|
|
|
|
if (!of_flat_dt_is_compatible(root, "motorola,PrPMC2800"))
|
|
return 0;
|
|
|
|
/* Update ppc_md.name with name from dt */
|
|
m = of_get_flat_dt_prop(root, "model", &len);
|
|
if (m)
|
|
strncpy(prpmc2800_platform_name, m,
|
|
min((int)len, PLATFORM_NAME_MAX - 1));
|
|
|
|
_set_L2CR(_get_L2CR() | L2CR_L2E);
|
|
return 1;
|
|
}
|
|
|
|
define_machine(prpmc2800){
|
|
.name = prpmc2800_platform_name,
|
|
.probe = prpmc2800_probe,
|
|
.setup_arch = prpmc2800_setup_arch,
|
|
.init_early = mv64x60_init_early,
|
|
.show_cpuinfo = prpmc2800_show_cpuinfo,
|
|
.init_IRQ = mv64x60_init_irq,
|
|
.get_irq = mv64x60_get_irq,
|
|
.restart = prpmc2800_restart,
|
|
.calibrate_decr = generic_calibrate_decr,
|
|
};
|