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https://github.com/brain-hackers/u-boot-brain
synced 2024-08-21 17:38:51 +09:00
![tang yuantian](/assets/img/avatar_default.png)
A new deep sleep interface is introduced to support generic board structure. Converts it to use new interface. Besides, added SPI/SD/NAND boot deep sleep support. Signed-off-by: Tang Yuantian <Yuantian.Tang@freescale.com> Reviewed-by: York Sun <yorksun@freescale.com>
174 lines
4.4 KiB
C
174 lines
4.4 KiB
C
/*
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* Copyright 2014 Freescale Semiconductor, Inc.
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <common.h>
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#include <i2c.h>
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#include <hwconfig.h>
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#include <asm/mmu.h>
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#include <fsl_ddr_sdram.h>
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#include <fsl_ddr_dimm_params.h>
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#include <asm/fsl_law.h>
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#include <asm/mpc85xx_gpio.h>
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DECLARE_GLOBAL_DATA_PTR;
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struct board_specific_parameters {
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u32 n_ranks;
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u32 datarate_mhz_high;
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u32 rank_gb;
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u32 clk_adjust;
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u32 wrlvl_start;
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u32 wrlvl_ctl_2;
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u32 wrlvl_ctl_3;
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};
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/*
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* datarate_mhz_high values need to be in ascending order
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*/
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static const struct board_specific_parameters udimm0[] = {
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/*
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* memory controller 0
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* num| hi| rank| clk| wrlvl | wrlvl | wrlvl |
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* ranks| mhz| GB |adjst| start | ctl2 | ctl3 |
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*/
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{2, 833, 0, 4, 6, 0x06060607, 0x08080807,},
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{2, 1350, 0, 4, 7, 0x0708080A, 0x0A0B0C09,},
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{2, 1666, 0, 4, 7, 0x0808090B, 0x0C0D0E0A,},
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{1, 833, 0, 4, 6, 0x06060607, 0x08080807,},
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{1, 1350, 0, 4, 7, 0x0708080A, 0x0A0B0C09,},
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{1, 1666, 0, 4, 7, 0x0808090B, 0x0C0D0E0A,},
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{}
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};
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static const struct board_specific_parameters *udimms[] = {
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udimm0,
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};
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void fsl_ddr_board_options(memctl_options_t *popts,
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dimm_params_t *pdimm,
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unsigned int ctrl_num)
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{
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const struct board_specific_parameters *pbsp, *pbsp_highest = NULL;
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ulong ddr_freq;
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struct cpu_type *cpu = gd->arch.cpu;
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if (ctrl_num > 1) {
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printf("Not supported controller number %d\n", ctrl_num);
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return;
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}
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if (!pdimm->n_ranks)
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return;
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pbsp = udimms[0];
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/* Get clk_adjust according to the board ddr freqency and n_banks
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* specified in board_specific_parameters table.
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*/
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ddr_freq = get_ddr_freq(0) / 1000000;
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while (pbsp->datarate_mhz_high) {
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if (pbsp->n_ranks == pdimm->n_ranks &&
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(pdimm->rank_density >> 30) >= pbsp->rank_gb) {
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if (ddr_freq <= pbsp->datarate_mhz_high) {
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popts->clk_adjust = pbsp->clk_adjust;
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popts->wrlvl_start = pbsp->wrlvl_start;
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popts->wrlvl_ctl_2 = pbsp->wrlvl_ctl_2;
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popts->wrlvl_ctl_3 = pbsp->wrlvl_ctl_3;
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goto found;
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}
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pbsp_highest = pbsp;
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}
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pbsp++;
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}
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if (pbsp_highest) {
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printf("Error: board specific timing not found\n");
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printf("for data rate %lu MT/s\n", ddr_freq);
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printf("Trying to use the highest speed (%u) parameters\n",
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pbsp_highest->datarate_mhz_high);
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popts->clk_adjust = pbsp_highest->clk_adjust;
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popts->wrlvl_start = pbsp_highest->wrlvl_start;
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popts->wrlvl_ctl_2 = pbsp->wrlvl_ctl_2;
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popts->wrlvl_ctl_3 = pbsp->wrlvl_ctl_3;
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} else {
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panic("DIMM is not supported by this board");
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}
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found:
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debug("Found timing match: n_ranks %d, data rate %d, rank_gb %d\n",
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pbsp->n_ranks, pbsp->datarate_mhz_high, pbsp->rank_gb);
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debug("\tclk_adjust %d, wrlvl_start %d, wrlvl_ctrl_2 0x%x, ",
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pbsp->clk_adjust, pbsp->wrlvl_start, pbsp->wrlvl_ctl_2);
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debug("wrlvl_ctrl_3 0x%x\n", pbsp->wrlvl_ctl_3);
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/*
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* Factors to consider for half-strength driver enable:
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* - number of DIMMs installed
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*/
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popts->half_strength_driver_enable = 0;
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/*
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* Write leveling override
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*/
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popts->wrlvl_override = 1;
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popts->wrlvl_sample = 0xf;
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/*
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* rtt and rtt_wr override
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*/
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popts->rtt_override = 0;
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/* Enable ZQ calibration */
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popts->zq_en = 1;
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/* DHC_EN =1, ODT = 75 Ohm */
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popts->ddr_cdr1 = DDR_CDR1_DHC_EN | DDR_CDR1_ODT(DDR_CDR_ODT_OFF);
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popts->ddr_cdr2 = DDR_CDR2_ODT(DDR_CDR_ODT_OFF);
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/* T1023 supports max DDR bus 32bit width, T1024 supports DDR 64bit,
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* force DDR bus width to 32bit for T1023
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*/
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if (cpu->soc_ver == SVR_T1023)
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popts->data_bus_width = DDR_DATA_BUS_WIDTH_32;
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#ifdef CONFIG_FORCE_DDR_DATA_BUS_WIDTH_32
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/* for DDR bus 32bit test on T1024 */
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popts->data_bus_width = DDR_DATA_BUS_WIDTH_32;
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#endif
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}
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#if defined(CONFIG_DEEP_SLEEP)
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void board_mem_sleep_setup(void)
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{
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void __iomem *cpld_base = (void *)CONFIG_SYS_CPLD_BASE;
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/* does not provide HW signals for power management */
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clrbits_8(cpld_base + 0x17, 0x40);
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/* Disable MCKE isolation */
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gpio_set_value(2, 0);
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udelay(1);
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}
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#endif
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phys_size_t initdram(int board_type)
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{
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phys_size_t dram_size;
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#if defined(CONFIG_SPL_BUILD) || !defined(CONFIG_RAMBOOT_PBL)
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puts("Initializing....using SPD\n");
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dram_size = fsl_ddr_sdram();
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dram_size = setup_ddr_tlbs(dram_size / 0x100000);
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dram_size *= 0x100000;
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#else
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/* DDR has been initialised by first stage boot loader */
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dram_size = fsl_ddr_sdram_size();
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#endif
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#if defined(CONFIG_DEEP_SLEEP) && !defined(CONFIG_SPL_BUILD)
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fsl_dp_resume();
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#endif
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return dram_size;
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}
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