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author | Prabhakar Kushwaha <prabhakar@freescale.com> | 2013-04-16 07:58:12 (GMT) |
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committer | Andy Fleming <afleming@freescale.com> | 2013-06-20 21:09:07 (GMT) |
commit | 0fa934d235c282e8efd119fc14a18315a8666930 (patch) | |
tree | f5ba5143a55d85340127fcf34b6789c140628a89 /board/freescale/p1010rdb/spl_minimal.c | |
parent | 3a88179d03dfc41154e5bf12826c800dee864b7c (diff) | |
download | u-boot-fsl-qoriq-0fa934d235c282e8efd119fc14a18315a8666930.tar.xz |
board/p1010rdb:Add NAND boot support using new SPL format
- defines constants
- Add spl_minimal.c to initialise DDR
- update TLB entries as per NAND boot
- remove nand_spl support for P1010RDB
Signed-off-by: Prabhakar Kushwaha <prabhakar@freescale.com>
Signed-off-by: Andy Fleming <afleming@freescale.com>
Diffstat (limited to 'board/freescale/p1010rdb/spl_minimal.c')
-rw-r--r-- | board/freescale/p1010rdb/spl_minimal.c | 143 |
1 files changed, 143 insertions, 0 deletions
diff --git a/board/freescale/p1010rdb/spl_minimal.c b/board/freescale/p1010rdb/spl_minimal.c new file mode 100644 index 0000000..c909e0e --- /dev/null +++ b/board/freescale/p1010rdb/spl_minimal.c @@ -0,0 +1,143 @@ +/* + * Copyright 2011 Freescale Semiconductor, Inc. + * + * 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 <mpc85xx.h> +#include <asm/io.h> +#include <ns16550.h> +#include <nand.h> +#include <asm/mmu.h> +#include <asm/immap_85xx.h> +#include <asm/fsl_ddr_sdram.h> +#include <asm/fsl_law.h> +#include <asm/global_data.h> + +DECLARE_GLOBAL_DATA_PTR; + + +void sdram_init(void) +{ + ccsr_ddr_t *ddr = (ccsr_ddr_t *)CONFIG_SYS_MPC8xxx_DDR_ADDR; + ccsr_gur_t *gur = (void *)CONFIG_SYS_MPC85xx_GUTS_ADDR; + u32 ddr_ratio; + unsigned long ddr_freq_mhz; + + ddr_ratio = in_be32(&gur->porpllsr) & MPC85xx_PORPLLSR_DDR_RATIO; + ddr_ratio = ddr_ratio >> MPC85xx_PORPLLSR_DDR_RATIO_SHIFT; + ddr_freq_mhz = (CONFIG_SYS_CLK_FREQ * ddr_ratio) / 0x1000000; + + /* mask off E bit */ + u32 svr = SVR_SOC_VER(mfspr(SPRN_SVR)); + + __raw_writel(CONFIG_SYS_DDR_CONTROL | SDRAM_CFG_32_BE, &ddr->sdram_cfg); + __raw_writel(CONFIG_SYS_DDR_CS0_BNDS, &ddr->cs0_bnds); + __raw_writel(CONFIG_SYS_DDR_CS0_CONFIG, &ddr->cs0_config); + __raw_writel(CONFIG_SYS_DDR_CONTROL_2, &ddr->sdram_cfg_2); + __raw_writel(CONFIG_SYS_DDR_DATA_INIT, &ddr->sdram_data_init); + + if (ddr_freq_mhz < 700) { + __raw_writel(CONFIG_SYS_DDR_TIMING_3_667, &ddr->timing_cfg_3); + __raw_writel(CONFIG_SYS_DDR_TIMING_0_667, &ddr->timing_cfg_0); + __raw_writel(CONFIG_SYS_DDR_TIMING_1_667, &ddr->timing_cfg_1); + __raw_writel(CONFIG_SYS_DDR_TIMING_2_667, &ddr->timing_cfg_2); + __raw_writel(CONFIG_SYS_DDR_MODE_1_667, &ddr->sdram_mode); + __raw_writel(CONFIG_SYS_DDR_MODE_2_667, &ddr->sdram_mode_2); + __raw_writel(CONFIG_SYS_DDR_INTERVAL_667, &ddr->sdram_interval); + __raw_writel(CONFIG_SYS_DDR_CLK_CTRL_667, &ddr->sdram_clk_cntl); + __raw_writel(CONFIG_SYS_DDR_WRLVL_CONTROL_667, &ddr->ddr_wrlvl_cntl); + } else { + __raw_writel(CONFIG_SYS_DDR_TIMING_3_800, &ddr->timing_cfg_3); + __raw_writel(CONFIG_SYS_DDR_TIMING_0_800, &ddr->timing_cfg_0); + __raw_writel(CONFIG_SYS_DDR_TIMING_1_800, &ddr->timing_cfg_1); + __raw_writel(CONFIG_SYS_DDR_TIMING_2_800, &ddr->timing_cfg_2); + __raw_writel(CONFIG_SYS_DDR_MODE_1_800, &ddr->sdram_mode); + __raw_writel(CONFIG_SYS_DDR_MODE_2_800, &ddr->sdram_mode_2); + __raw_writel(CONFIG_SYS_DDR_INTERVAL_800, &ddr->sdram_interval); + __raw_writel(CONFIG_SYS_DDR_CLK_CTRL_800, &ddr->sdram_clk_cntl); + __raw_writel(CONFIG_SYS_DDR_WRLVL_CONTROL_800, &ddr->ddr_wrlvl_cntl); + } + + __raw_writel(CONFIG_SYS_DDR_TIMING_4, &ddr->timing_cfg_4); + __raw_writel(CONFIG_SYS_DDR_TIMING_5, &ddr->timing_cfg_5); + __raw_writel(CONFIG_SYS_DDR_ZQ_CONTROL, &ddr->ddr_zq_cntl); + + /* P1014 and it's derivatives support max 16bit DDR width */ + if (svr == SVR_P1014) { + __raw_writel(ddr->sdram_cfg & ~SDRAM_CFG_DBW_MASK, &ddr->sdram_cfg); + __raw_writel(ddr->sdram_cfg | SDRAM_CFG_16_BE, &ddr->sdram_cfg); + /* For CS0_BNDS we divide the start and end address by 2, so we can just + * shift the entire register to achieve the desired result and the mask + * the value so we don't write reserved fields */ + __raw_writel((CONFIG_SYS_DDR_CS0_BNDS >> 1) & 0x0fff0fff, &ddr->cs0_bnds); + } + + asm volatile("sync;isync"); + udelay(500); + + /* Let the controller go */ + out_be32(&ddr->sdram_cfg, in_be32(&ddr->sdram_cfg) | SDRAM_CFG_MEM_EN); + + set_next_law(CONFIG_SYS_NAND_DDR_LAW, LAW_SIZE_1G, LAW_TRGT_IF_DDR_1); +} + +void board_init_f(ulong bootflag) +{ + u32 plat_ratio; + ccsr_gur_t *gur = (void *)CONFIG_SYS_MPC85xx_GUTS_ADDR; + + /* initialize selected port with appropriate baud rate */ + plat_ratio = in_be32(&gur->porpllsr) & MPC85xx_PORPLLSR_PLAT_RATIO; + plat_ratio >>= 1; + gd->bus_clk = CONFIG_SYS_CLK_FREQ * plat_ratio; + + NS16550_init((NS16550_t)CONFIG_SYS_NS16550_COM1, + gd->bus_clk / 16 / CONFIG_BAUDRATE); + + puts("\nNAND boot... "); + + /* Initialize the DDR3 */ + sdram_init(); + + /* copy code to RAM and jump to it - this should not return */ + /* NOTE - code has to be copied out of NAND buffer before + * other blocks can be read. + */ + + relocate_code(CONFIG_SPL_RELOC_STACK, 0, CONFIG_SPL_RELOC_TEXT_BASE); +} + +void board_init_r(gd_t *gd, ulong dest_addr) +{ + nand_boot(); +} + +void putc(char c) +{ + if (c == '\n') + NS16550_putc((NS16550_t)CONFIG_SYS_NS16550_COM1, '\r'); + + NS16550_putc((NS16550_t)CONFIG_SYS_NS16550_COM1, c); +} + +void puts(const char *str) +{ + while (*str) + putc(*str++); +} |