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/*
* (C) Copyright 2007
* Heiko Schocher, DENX Software Engineering, hs@denx.de.
*
* See file CREDITS for list of people who contributed to this
* project.
*
* 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.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
#include <common.h>
#include <mpc8xx.h>
#include <asm/io.h>
#if defined(CONFIG_OF_BOARD_SETUP) && defined(CONFIG_OF_LIBFDT)
#include <libfdt.h>
#endif
extern int ivm_read_eeprom (void);
DECLARE_GLOBAL_DATA_PTR;
const uint sdram_table[] =
{
0x0f07fc04, 0x0ffffc04, 0x00bdfc04, 0x0ff77c00,
0x1ffffc05, 0xfffffc04, 0xfffffc04, 0xfffffc04,
/* 0x08 Burst Read */
0x0f07fc04, 0x0ffffc04, 0x00bdfc04, 0x00fffc00,
0x00fffc00, 0x00fffc00, 0x0ff77c00, 0x1ffffc05,
/* 0x10 Load mode register */
0x0ffffc34, 0x0ff57c04, 0x0ffffc04, 0x1ffffc05,
0xfffffc04, 0xfffffc04, 0xfffffc04, 0xfffffc04,
/* 0x18 Single Write */
0x0f07fc04, 0x0ffffc00, 0x00bd7c04, 0x0ffffc04,
0x0ff77c04, 0x1ffffc05, 0xfffffc04, 0xfffffc04,
/* 0x20 Burst Write */
0x0f07fc04, 0x0ffffc00, 0x00bd7c00, 0x00fffc00,
0x00fffc00, 0x00fffc04, 0x0ffffc04, 0x0ff77c04,
0x1ffffc05, 0xfffffc04, 0xfffffc04, 0xfffffc04,
0xfffffc04, 0xfffffc04, 0xfffffc04, 0xfffffc04,
/* 0x30 Precharge all and Refresh */
0x0ff77c04, 0x0ffffc04, 0x0ff5fc84, 0x0ffffc04,
0x0ffffc04, 0x0ffffc84, 0x1ffffc05, 0xfffffc04,
0xfffffc04, 0xfffffc04, 0xfffffc04, 0xfffffc04,
/* 0x3C Exception */
0x7ffffc04, 0xfffffc07, 0xfffffc04, 0xfffffc04,
};
int checkboard (void)
{
puts ("Board: Keymile mgsuvd\n");
return (0);
}
phys_size_t initdram (int board_type)
{
volatile immap_t *immap = (immap_t *) CONFIG_SYS_IMMR;
volatile memctl8xx_t *memctl = &immap->im_memctl;
long int size;
upmconfig (UPMB, (uint *) sdram_table,
sizeof (sdram_table) / sizeof (uint));
/*
* Preliminary prescaler for refresh (depends on number of
* banks): This value is selected for four cycles every 62.4 us
* with two SDRAM banks or four cycles every 31.2 us with one
* bank. It will be adjusted after memory sizing.
*/
memctl->memc_mptpr = CONFIG_SYS_MPTPR;
/*
* The following value is used as an address (i.e. opcode) for
* the LOAD MODE REGISTER COMMAND during SDRAM initialisation. If
* the port size is 32bit the SDRAM does NOT "see" the lower two
* address lines, i.e. mar=0x00000088 -> opcode=0x00000022 for
* MICRON SDRAMs:
* -> 0 00 010 0 010
* | | | | +- Burst Length = 4
* | | | +----- Burst Type = Sequential
* | | +------- CAS Latency = 2
* | +----------- Operating Mode = Standard
* +-------------- Write Burst Mode = Programmed Burst Length
*/
memctl->memc_mar = CONFIG_SYS_MAR;
/*
* Map controller banks 1 to the SDRAM banks 1 at
* preliminary addresses - these have to be modified after the
* SDRAM size has been determined.
*/
memctl->memc_or1 = CONFIG_SYS_OR1_PRELIM;
memctl->memc_br1 = CONFIG_SYS_BR1_PRELIM;
memctl->memc_mbmr = CONFIG_SYS_MBMR & (~(MBMR_PTBE)); /* no refresh yet */
udelay (200);
/* perform SDRAM initializsation sequence */
memctl->memc_mcr = 0x80802830; /* SDRAM bank 0 */
udelay (1);
memctl->memc_mcr = 0x80802110; /* SDRAM bank 0 - execute twice */
udelay (1);
memctl->memc_mbmr |= MBMR_PTBE; /* enable refresh */
udelay (1000);
/*
* Check Bank 0 Memory Size for re-configuration
*
*/
size = get_ram_size(SDRAM_BASE1_PRELIM, SDRAM_MAX_SIZE);
udelay (1000);
debug ("SDRAM Bank 0: %ld MB\n", size >> 20);
return (size);
}
/*
* Early board initalization.
*/
int board_early_init_r(void)
{
/* setup the UPIOx */
out_8((u8 *)(CONFIG_SYS_PIGGY_BASE + 0x02), 0xc0);
out_8((u8 *)(CONFIG_SYS_PIGGY_BASE + 0x03), 0x35);
return 0;
}
int hush_init_var (void)
{
ivm_read_eeprom ();
return 0;
}
#if defined(CONFIG_OF_BOARD_SETUP) && defined(CONFIG_OF_LIBFDT)
extern int fdt_set_node_and_value (void *blob,
char *nodename,
char *regname,
void *var,
int size);
/*
* update "memory" property in the blob
*/
void ft_blob_update (void *blob, bd_t *bd)
{
ulong brg_data[1] = {0};
ulong memory_data[2] = {0};
ulong flash_data[4] = {0};
memory_data[0] = cpu_to_be32 (bd->bi_memstart);
memory_data[1] = cpu_to_be32 (bd->bi_memsize);
fdt_set_node_and_value (blob, "/memory", "reg", memory_data,
sizeof (memory_data));
flash_data[2] = cpu_to_be32 (bd->bi_flashstart);
flash_data[3] = cpu_to_be32 (bd->bi_flashsize);
fdt_set_node_and_value (blob, "/localbus", "ranges", flash_data,
sizeof (flash_data));
/* BRG */
brg_data[0] = cpu_to_be32 (bd->bi_busfreq);
fdt_set_node_and_value (blob, "/soc/cpm", "brg-frequency", brg_data,
sizeof (brg_data));
/* MAC adr */
fdt_set_node_and_value (blob, "/soc/cpm/ethernet", "mac-address",
bd->bi_enetaddr, sizeof (u8) * 6);
}
void ft_board_setup(void *blob, bd_t *bd)
{
ft_cpu_setup (blob, bd);
ft_blob_update (blob, bd);
}
#endif /* defined(CONFIG_OF_BOARD_SETUP) && defined(CONFIG_OF_LIBFDT) */
int i2c_soft_read_pin (void)
{
int val;
*(unsigned short *)(I2C_BASE_DIR) &= ~SDA_CONF;
udelay(1);
val = *(unsigned char *)(I2C_BASE_PORT);
return ((val & SDA_BIT) == SDA_BIT);
}
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