mirror of
https://github.com/u-boot/u-boot.git
synced 2024-12-01 00:23:29 +08:00
f1683aa73c
This allows us to use the same DRAM init function on all archs. Add a dummy function for arc, which does not use DRAM init here. Signed-off-by: Simon Glass <sjg@chromium.org> [trini: Dummy function on nios2] Signed-off-by: Tom Rini <trini@konsulko.com>
120 lines
3.0 KiB
C
120 lines
3.0 KiB
C
/*
|
|
* (C) Copyright 2003
|
|
* Thomas.Lange@corelatus.se
|
|
*
|
|
* SPDX-License-Identifier: GPL-2.0+
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <command.h>
|
|
#include <mach/au1x00.h>
|
|
#include <asm/mipsregs.h>
|
|
#include <asm/io.h>
|
|
|
|
DECLARE_GLOBAL_DATA_PTR;
|
|
|
|
int dram_init(void)
|
|
{
|
|
/* Sdram is setup by assembler code */
|
|
/* If memory could be changed, we should return the true value here */
|
|
gd->ram_size = MEM_SIZE * 1024 * 1024;
|
|
|
|
return 0;
|
|
}
|
|
|
|
#define BCSR_PCMCIA_PC0DRVEN 0x0010
|
|
#define BCSR_PCMCIA_PC0RST 0x0080
|
|
|
|
/* In arch/mips/cpu/cpu.c */
|
|
void write_one_tlb( int index, u32 pagemask, u32 hi, u32 low0, u32 low1 );
|
|
|
|
int checkboard (void)
|
|
{
|
|
#ifdef CONFIG_IDE_PCMCIA
|
|
u16 status;
|
|
volatile u32 *pcmcia_bcsr = (u32*)(DB1XX0_BCSR_ADDR+0x10);
|
|
#endif /* CONFIG_IDE_PCMCIA */
|
|
volatile u32 *phy = (u32*)(DB1XX0_BCSR_ADDR+0xC);
|
|
volatile u32 *sys_counter = (volatile u32*)SYS_COUNTER_CNTRL;
|
|
u32 proc_id;
|
|
|
|
*sys_counter = 0x100; /* Enable 32 kHz oscillator for RTC/TOY */
|
|
|
|
proc_id = read_c0_prid();
|
|
|
|
switch (proc_id >> 24) {
|
|
case 0:
|
|
puts ("Board: Merlot (DbAu1000)\n");
|
|
printf ("CPU: Au1000 396 MHz, id: 0x%02x, rev: 0x%02x\n",
|
|
(proc_id >> 8) & 0xFF, proc_id & 0xFF);
|
|
break;
|
|
case 1:
|
|
puts ("Board: DbAu1500\n");
|
|
printf ("CPU: Au1500, id: 0x%02x, rev: 0x%02x\n",
|
|
(proc_id >> 8) & 0xFF, proc_id & 0xFF);
|
|
break;
|
|
case 2:
|
|
puts ("Board: DbAu1100\n");
|
|
printf ("CPU: Au1100, id: 0x%02x, rev: 0x%02x\n",
|
|
(proc_id >> 8) & 0xFF, proc_id & 0xFF);
|
|
break;
|
|
case 3:
|
|
puts ("Board: DbAu1550\n");
|
|
printf ("CPU: Au1550, id: 0x%02x, rev: 0x%02x\n",
|
|
(proc_id >> 8) & 0xFF, proc_id & 0xFF);
|
|
break;
|
|
default:
|
|
printf ("Unsupported cpu %d, proc_id=0x%x\n", proc_id >> 24, proc_id);
|
|
}
|
|
|
|
set_io_port_base(0);
|
|
|
|
#ifdef CONFIG_IDE_PCMCIA
|
|
/* Enable 3.3 V on slot 0 ( VCC )
|
|
No 5V */
|
|
status = 4;
|
|
*pcmcia_bcsr = status;
|
|
|
|
status |= BCSR_PCMCIA_PC0DRVEN;
|
|
*pcmcia_bcsr = status;
|
|
au_sync();
|
|
|
|
udelay(300*1000);
|
|
|
|
status |= BCSR_PCMCIA_PC0RST;
|
|
*pcmcia_bcsr = status;
|
|
au_sync();
|
|
|
|
udelay(100*1000);
|
|
|
|
/* PCMCIA is on a 36 bit physical address.
|
|
We need to map it into a 32 bit addresses */
|
|
|
|
#if 0
|
|
/* We dont need theese unless we run whole pcmcia package */
|
|
write_one_tlb(20, /* index */
|
|
0x01ffe000, /* Pagemask, 16 MB pages */
|
|
CONFIG_SYS_PCMCIA_IO_BASE, /* Hi */
|
|
0x3C000017, /* Lo0 */
|
|
0x3C200017); /* Lo1 */
|
|
|
|
write_one_tlb(21, /* index */
|
|
0x01ffe000, /* Pagemask, 16 MB pages */
|
|
CONFIG_SYS_PCMCIA_ATTR_BASE, /* Hi */
|
|
0x3D000017, /* Lo0 */
|
|
0x3D200017); /* Lo1 */
|
|
#endif /* 0 */
|
|
write_one_tlb(22, /* index */
|
|
0x01ffe000, /* Pagemask, 16 MB pages */
|
|
CONFIG_SYS_PCMCIA_MEM_ADDR, /* Hi */
|
|
0x3E000017, /* Lo0 */
|
|
0x3E200017); /* Lo1 */
|
|
#endif /* CONFIG_IDE_PCMCIA */
|
|
|
|
/* Release reset of ethernet PHY chips */
|
|
/* Always do this, because linux does not know about it */
|
|
*phy = 3;
|
|
|
|
return 0;
|
|
}
|