diff options
Diffstat (limited to 'board/keymile/mgsuvd/mgsuvd.c')
| -rw-r--r-- | board/keymile/mgsuvd/mgsuvd.c | 204 |
1 files changed, 204 insertions, 0 deletions
diff --git a/board/keymile/mgsuvd/mgsuvd.c b/board/keymile/mgsuvd/mgsuvd.c new file mode 100644 index 0000000..0fd28da --- /dev/null +++ b/board/keymile/mgsuvd/mgsuvd.c @@ -0,0 +1,204 @@ +/* + * (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); +} |