135 lines
3.8 KiB
C
135 lines
3.8 KiB
C
/*
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* Copyright 2011 Freescale Semiconductor, Inc.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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*
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*
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*/
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#include <common.h>
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#include <ns16550.h>
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#include <asm/io.h>
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#include <nand.h>
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#include <asm/fsl_law.h>
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#include <asm/fsl_ddr_sdram.h>
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#define udelay(x) {int i, j; \
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for (i = 0; i < x; i++) \
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for (j = 0; j < 10000; j++) \
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; }
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/*
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* Fixed sdram init -- doesn't use serial presence detect.
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*/
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void sdram_init(void)
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{
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ccsr_ddr_t *ddr = (ccsr_ddr_t *)CONFIG_SYS_MPC85xx_DDR_ADDR;
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out_be32(&ddr->cs0_bnds, CONFIG_SYS_DDR_CS0_BNDS);
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out_be32(&ddr->cs0_config, CONFIG_SYS_DDR_CS0_CONFIG);
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#if CONFIG_CHIP_SELECTS_PER_CTRL > 1
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out_be32(&ddr->cs1_bnds, CONFIG_SYS_DDR_CS1_BNDS);
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out_be32(&ddr->cs1_config, CONFIG_SYS_DDR_CS1_CONFIG);
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#endif
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out_be32(&ddr->timing_cfg_3, CONFIG_SYS_DDR_TIMING_3);
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out_be32(&ddr->timing_cfg_0, CONFIG_SYS_DDR_TIMING_0);
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out_be32(&ddr->timing_cfg_1, CONFIG_SYS_DDR_TIMING_1);
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out_be32(&ddr->timing_cfg_2, CONFIG_SYS_DDR_TIMING_2);
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out_be32(&ddr->sdram_cfg_2, CONFIG_SYS_DDR_CONTROL_2);
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out_be32(&ddr->sdram_mode, CONFIG_SYS_DDR_MODE_1);
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out_be32(&ddr->sdram_mode_2, CONFIG_SYS_DDR_MODE_2);
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out_be32(&ddr->sdram_interval, CONFIG_SYS_DDR_INTERVAL);
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out_be32(&ddr->sdram_data_init, CONFIG_SYS_DDR_DATA_INIT);
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out_be32(&ddr->sdram_clk_cntl, CONFIG_SYS_DDR_CLK_CTRL);
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out_be32(&ddr->timing_cfg_4, CONFIG_SYS_DDR_TIMING_4);
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out_be32(&ddr->timing_cfg_5, CONFIG_SYS_DDR_TIMING_5);
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out_be32(&ddr->ddr_zq_cntl, CONFIG_SYS_DDR_ZQ_CONTROL);
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out_be32(&ddr->ddr_wrlvl_cntl, CONFIG_SYS_DDR_WRLVL_CONTROL);
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/* Set, but do not enable the memory */
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out_be32(&ddr->sdram_cfg, CONFIG_SYS_DDR_CONTROL & ~SDRAM_CFG_MEM_EN);
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asm volatile("sync;isync");
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udelay(500);
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/* Let the controller go */
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out_be32(&ddr->sdram_cfg, in_be32(&ddr->sdram_cfg) | SDRAM_CFG_MEM_EN);
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set_next_law(0, CONFIG_SYS_SDRAM_SIZE_LAW, LAW_TRGT_IF_DDR_1);
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}
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void board_init_f(ulong bootflag)
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{
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u32 plat_ratio, bus_clk;
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ccsr_gur_t *gur = (void *)CONFIG_SYS_MPC85xx_GUTS_ADDR;
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#ifndef CONFIG_QE
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ccsr_gpio_t *pgpio = (void *)(CONFIG_SYS_MPC85xx_GPIO_ADDR);
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#endif
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/* initialize selected port with appropriate baud rate */
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plat_ratio = in_be32(&gur->porpllsr) & MPC85xx_PORPLLSR_PLAT_RATIO;
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plat_ratio >>= 1;
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bus_clk = CONFIG_SYS_CLK_FREQ * plat_ratio;
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NS16550_init((NS16550_t)CONFIG_SYS_NS16550_COM1,
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bus_clk / 16 / CONFIG_BAUDRATE);
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puts("\nNAND boot... ");
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#ifndef CONFIG_QE
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/* init DDR3 reset signal */
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out_be32(&pgpio->gpdir, 0x02000000);
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out_be32(&pgpio->gpodr, 0x00200000);
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out_be32(&pgpio->gpdat, 0x00000000);
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udelay(1000);
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out_be32(&pgpio->gpdat, 0x00200000);
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udelay(1000);
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out_be32(&pgpio->gpdir, 0x00000000);
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#endif
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/* Initialize the DDR3 */
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sdram_init();
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/* copy code to RAM and jump to it - this should not return */
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/* NOTE - code has to be copied out of NAND buffer before
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* other blocks can be read.
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*/
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relocate_code(CONFIG_SYS_NAND_U_BOOT_RELOC_SP, 0,
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CONFIG_SYS_NAND_U_BOOT_RELOC);
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}
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void board_init_r(gd_t *gd, ulong dest_addr)
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{
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nand_boot();
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}
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void putc(char c)
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{
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if (c == '\n')
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NS16550_putc((NS16550_t)CONFIG_SYS_NS16550_COM1, '\r');
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NS16550_putc((NS16550_t)CONFIG_SYS_NS16550_COM1, c);
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}
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void puts(const char *str)
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{
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while (*str)
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putc(*str++);
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}
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