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Diffstat (limited to 'board/spear/common/spr_misc.c')
| -rwxr-xr-x | board/spear/common/spr_misc.c | 171 |
1 files changed, 171 insertions, 0 deletions
diff --git a/board/spear/common/spr_misc.c b/board/spear/common/spr_misc.c new file mode 100755 index 0000000..dfa3ece --- /dev/null +++ b/board/spear/common/spr_misc.c @@ -0,0 +1,171 @@ +/* + * (C) Copyright 2009 + * Vipin Kumar, ST Micoelectronics, vipin.kumar@st.com. + * + * 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 <command.h> +#include <i2c.h> +#include <net.h> +#include <asm/io.h> +#include <asm/arch/hardware.h> +#include <asm/arch/spr_xloader_table.h> +#include <asm/arch/spr_defs.h> + +#define CPU 0 +#define DDR 1 +#define SRAM_REL 0xD2801000 + +DECLARE_GLOBAL_DATA_PTR; +static struct chip_data chip_data; + +int dram_init(void) +{ + struct xloader_table *xloader_tb = + (struct xloader_table *)XLOADER_TABLE_ADDRESS; + struct xloader_table_1_1 *table_1_1; + struct xloader_table_1_2 *table_1_2; + struct chip_data *chip = &chip_data; + + gd->bd->bi_dram[0].start = PHYS_SDRAM_1; + gd->bd->bi_dram[0].size = get_ram_size(PHYS_SDRAM_1, + PHYS_SDRAM_1_MAXSIZE); + + if (XLOADER_TABLE_VERSION_1_1 == xloader_tb->table_version) { + table_1_1 = &xloader_tb->table.table_1_1; + chip->dramfreq = table_1_1->ddrfreq; + chip->dramtype = table_1_1->ddrtype; + + } else if (XLOADER_TABLE_VERSION_1_2 == xloader_tb->table_version) { + table_1_2 = &xloader_tb->table.table_1_2; + chip->dramfreq = table_1_2->ddrfreq; + chip->dramtype = table_1_2->ddrtype; + } else { + chip->dramfreq = -1; + } + + return 0; +} + +int misc_init_r(void) +{ + setenv("verify", "n"); + +#if defined(CONFIG_SPEAR_USBTTY) + setenv("stdin", "usbtty"); + setenv("stdout", "usbtty"); + setenv("stderr", "usbtty"); +#endif + return 0; +} + +int spear_board_init(ulong mach_type) +{ + struct xloader_table *xloader_tb = + (struct xloader_table *)XLOADER_TABLE_ADDRESS; + struct xloader_table_1_2 *table_1_2; + struct chip_data *chip = &chip_data; + + gd->bd->bi_arch_number = mach_type; + + /* adress of boot parameters */ + gd->bd->bi_boot_params = CONFIG_BOOT_PARAMS_ADDR; + + /* CPU is initialized to work at 333MHz in Xloader */ + chip->cpufreq = 333; + + if (XLOADER_TABLE_VERSION_1_2 == xloader_tb->table_version) { + table_1_2 = &xloader_tb->table.table_1_2; + memcpy(chip->version, table_1_2->version, + sizeof(chip->version)); + } + + return 0; +} + +int do_chip_config(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) +{ + void (*sram_setfreq) (unsigned int, unsigned int); + struct chip_data *chip = &chip_data; + unsigned char mac[6]; + unsigned int frequency; + + if ((argc > 3) || (argc < 2)) { + cmd_usage(cmdtp); + return 1; + } + + if ((!strcmp(argv[1], "cpufreq")) || (!strcmp(argv[1], "ddrfreq"))) { + + frequency = simple_strtoul(argv[2], NULL, 0); + + if (frequency > 333) { + printf("Frequency is limited to 333MHz\n"); + return 1; + } + + sram_setfreq = memcpy((void *)SRAM_REL, setfreq, setfreq_sz); + + if (!strcmp(argv[1], "cpufreq")) { + sram_setfreq(CPU, frequency); + printf("CPU frequency changed to %u\n", frequency); + + chip->cpufreq = frequency; + } else { + sram_setfreq(DDR, frequency); + printf("DDR frequency changed to %u\n", frequency); + + chip->dramfreq = frequency; + } + + return 0; + } else if (!strcmp(argv[1], "print")) { + + if (chip->cpufreq == -1) + printf("CPU Freq = Not Known\n"); + else + printf("CPU Freq = %d MHz\n", chip->cpufreq); + + if (chip->dramfreq == -1) + printf("DDR Freq = Not Known\n"); + else + printf("DDR Freq = %d MHz\n", chip->dramfreq); + + if (chip->dramtype == DDRMOBILE) + printf("DDR Type = MOBILE\n"); + else if (chip->dramtype == DDR2) + printf("DDR Type = DDR2\n"); + else + printf("DDR Type = Not Known\n"); + + printf("Xloader Rev = %s\n", chip->version); + + return 0; + } + + cmd_usage(cmdtp); + return 1; +} + +U_BOOT_CMD(chip_config, 3, 1, do_chip_config, + "configure chip", + "chip_config cpufreq/ddrfreq frequency\n" + "chip_config print"); |