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u-boot/board/freescale/p1_p2_rdb/ddr.c
Prabhakar Kushwaha bc2d40ca10 board/p1_p2_rdb:Enable p1_p2_rdb boot from NAND/SD/SPI in SPL 
In the earlier patches, the SPL/TPL fraamework was introduced.
For SD/SPI flash booting way, we introduce the SPL to enable a loader stub. The
SPL was loaded by the code from the internal on-chip ROM. The SPL initializes
the DDR according to the SPD and loads the final uboot image into DDR, then
jump to the DDR to begin execution.

For NAND booting way, the nand SPL has size limitation on some board(e.g.
P1010RDB), it can not be more than 4KB, we can call it "minimal SPL", So the
dynamic DDR driver doesn't fit into this minimum SPL. We added the TPL that is
loaded by the the minimal SPL. The TPL initializes the DDR according to the SPD
and loads the final uboot image into DDR,then jump to the DDR to begin execution.

This patch enabled SPL/TPL for P1_P2_RDB to support starting from NAND/SD/SPI
flash with SPL framework and initializing the DDR according to SPD in the SPL/TPL.
Because the minimal SPL load the TPL to L2 SRAM and the jump to the L2 SRAM to
execute, so the section .resetvec is no longer needed.

Signed-off-by: Prabhakar Kushwaha <prabhakar@freescale.com>
Reviewed-by: York Sun <yorksun@freescale.com>
2014-05-16 16:24:27 -05:00

221 lines
8.1 KiB
C
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/*
* Copyright 2009, 2011 Freescale Semiconductor, Inc.
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <asm/mmu.h>
#include <asm/immap_85xx.h>
#include <asm/processor.h>
#include <fsl_ddr_sdram.h>
#include <asm/io.h>
#include <asm/fsl_law.h>
DECLARE_GLOBAL_DATA_PTR;
#define CONFIG_SYS_DDR_CS0_BNDS 0x0000003F
#define CONFIG_SYS_DDR_CS0_CONFIG 0x80014202
#define CONFIG_SYS_DDR_CS0_CONFIG_2 0x00000000
#define CONFIG_SYS_DDR_INIT_ADDR 0x00000000
#define CONFIG_SYS_DDR_INIT_EXT_ADDR 0x00000000
#define CONFIG_SYS_DDR_MODE_CONTROL 0x00000000
#define CONFIG_SYS_DDR_ZQ_CONTROL 0x00000000
#define CONFIG_SYS_DDR_WRLVL_CONTROL 0x00000000
#define CONFIG_SYS_DDR_SR_CNTR 0x00000000
#define CONFIG_SYS_DDR_RCW_1 0x00000000
#define CONFIG_SYS_DDR_RCW_2 0x00000000
#define CONFIG_SYS_DDR_CONTROL 0x43000000 /* Type = DDR2*/
#define CONFIG_SYS_DDR_CONTROL_2 0x24401000
#define CONFIG_SYS_DDR_TIMING_4 0x00000000
#define CONFIG_SYS_DDR_TIMING_5 0x00000000
#define CONFIG_SYS_DDR_TIMING_3_400 0x00010000
#define CONFIG_SYS_DDR_TIMING_0_400 0x00260802
#define CONFIG_SYS_DDR_TIMING_1_400 0x39355322
#define CONFIG_SYS_DDR_TIMING_2_400 0x1f9048ca
#define CONFIG_SYS_DDR_CLK_CTRL_400 0x02800000
#define CONFIG_SYS_DDR_MODE_1_400 0x00480432
#define CONFIG_SYS_DDR_MODE_2_400 0x00000000
#define CONFIG_SYS_DDR_INTERVAL_400 0x06180100
#define CONFIG_SYS_DDR_TIMING_3_533 0x00020000
#define CONFIG_SYS_DDR_TIMING_0_533 0x00260802
#define CONFIG_SYS_DDR_TIMING_1_533 0x4c47c432
#define CONFIG_SYS_DDR_TIMING_2_533 0x0f9848ce
#define CONFIG_SYS_DDR_CLK_CTRL_533 0x02800000
#define CONFIG_SYS_DDR_MODE_1_533 0x00040642
#define CONFIG_SYS_DDR_MODE_2_533 0x00000000
#define CONFIG_SYS_DDR_INTERVAL_533 0x08200100
#define CONFIG_SYS_DDR_TIMING_3_667 0x00030000
#define CONFIG_SYS_DDR_TIMING_0_667 0x55770802
#define CONFIG_SYS_DDR_TIMING_1_667 0x5f599543
#define CONFIG_SYS_DDR_TIMING_2_667 0x0fa074d1
#define CONFIG_SYS_DDR_CLK_CTRL_667 0x03000000
#define CONFIG_SYS_DDR_MODE_1_667 0x00040852
#define CONFIG_SYS_DDR_MODE_2_667 0x00000000
#define CONFIG_SYS_DDR_INTERVAL_667 0x0a280100
#define CONFIG_SYS_DDR_TIMING_3_800 0x00040000
#define CONFIG_SYS_DDR_TIMING_0_800 0x00770802
#define CONFIG_SYS_DDR_TIMING_1_800 0x6f6b6543
#define CONFIG_SYS_DDR_TIMING_2_800 0x0fa074d1
#define CONFIG_SYS_DDR_CLK_CTRL_800 0x02800000
#define CONFIG_SYS_DDR_MODE_1_800 0x00040852
#define CONFIG_SYS_DDR_MODE_2_800 0x00000000
#define CONFIG_SYS_DDR_INTERVAL_800 0x0c300100
fsl_ddr_cfg_regs_t ddr_cfg_regs_400 = {
.cs[0].bnds = CONFIG_SYS_DDR_CS0_BNDS,
.cs[0].config = CONFIG_SYS_DDR_CS0_CONFIG,
.cs[0].config_2 = CONFIG_SYS_DDR_CS0_CONFIG_2,
.timing_cfg_3 = CONFIG_SYS_DDR_TIMING_3_400,
.timing_cfg_0 = CONFIG_SYS_DDR_TIMING_0_400,
.timing_cfg_1 = CONFIG_SYS_DDR_TIMING_1_400,
.timing_cfg_2 = CONFIG_SYS_DDR_TIMING_2_400,
.ddr_sdram_cfg = CONFIG_SYS_DDR_CONTROL,
.ddr_sdram_cfg_2 = CONFIG_SYS_DDR_CONTROL_2,
.ddr_sdram_mode = CONFIG_SYS_DDR_MODE_1_400,
.ddr_sdram_mode_2 = CONFIG_SYS_DDR_MODE_2_400,
.ddr_sdram_md_cntl = CONFIG_SYS_DDR_MODE_CONTROL,
.ddr_sdram_interval = CONFIG_SYS_DDR_INTERVAL_400,
.ddr_data_init = CONFIG_MEM_INIT_VALUE,
.ddr_sdram_clk_cntl = CONFIG_SYS_DDR_CLK_CTRL_400,
.ddr_init_addr = CONFIG_SYS_DDR_INIT_ADDR,
.ddr_init_ext_addr = CONFIG_SYS_DDR_INIT_EXT_ADDR,
.timing_cfg_4 = CONFIG_SYS_DDR_TIMING_4,
.timing_cfg_5 = CONFIG_SYS_DDR_TIMING_5,
.ddr_zq_cntl = CONFIG_SYS_DDR_ZQ_CONTROL,
.ddr_wrlvl_cntl = CONFIG_SYS_DDR_WRLVL_CONTROL,
.ddr_sr_cntr = CONFIG_SYS_DDR_SR_CNTR,
.ddr_sdram_rcw_1 = CONFIG_SYS_DDR_RCW_1,
.ddr_sdram_rcw_2 = CONFIG_SYS_DDR_RCW_2
};
fsl_ddr_cfg_regs_t ddr_cfg_regs_533 = {
.cs[0].bnds = CONFIG_SYS_DDR_CS0_BNDS,
.cs[0].config = CONFIG_SYS_DDR_CS0_CONFIG,
.cs[0].config_2 = CONFIG_SYS_DDR_CS0_CONFIG_2,
.timing_cfg_3 = CONFIG_SYS_DDR_TIMING_3_533,
.timing_cfg_0 = CONFIG_SYS_DDR_TIMING_0_533,
.timing_cfg_1 = CONFIG_SYS_DDR_TIMING_1_533,
.timing_cfg_2 = CONFIG_SYS_DDR_TIMING_2_533,
.ddr_sdram_cfg = CONFIG_SYS_DDR_CONTROL,
.ddr_sdram_cfg_2 = CONFIG_SYS_DDR_CONTROL_2,
.ddr_sdram_mode = CONFIG_SYS_DDR_MODE_1_533,
.ddr_sdram_mode_2 = CONFIG_SYS_DDR_MODE_2_533,
.ddr_sdram_md_cntl = CONFIG_SYS_DDR_MODE_CONTROL,
.ddr_sdram_interval = CONFIG_SYS_DDR_INTERVAL_533,
.ddr_data_init = CONFIG_MEM_INIT_VALUE,
.ddr_sdram_clk_cntl = CONFIG_SYS_DDR_CLK_CTRL_533,
.ddr_init_addr = CONFIG_SYS_DDR_INIT_ADDR,
.ddr_init_ext_addr = CONFIG_SYS_DDR_INIT_EXT_ADDR,
.timing_cfg_4 = CONFIG_SYS_DDR_TIMING_4,
.timing_cfg_5 = CONFIG_SYS_DDR_TIMING_5,
.ddr_zq_cntl = CONFIG_SYS_DDR_ZQ_CONTROL,
.ddr_wrlvl_cntl = CONFIG_SYS_DDR_WRLVL_CONTROL,
.ddr_sr_cntr = CONFIG_SYS_DDR_SR_CNTR,
.ddr_sdram_rcw_1 = CONFIG_SYS_DDR_RCW_1,
.ddr_sdram_rcw_2 = CONFIG_SYS_DDR_RCW_2
};
fsl_ddr_cfg_regs_t ddr_cfg_regs_667 = {
.cs[0].bnds = CONFIG_SYS_DDR_CS0_BNDS,
.cs[0].config = CONFIG_SYS_DDR_CS0_CONFIG,
.cs[0].config_2 = CONFIG_SYS_DDR_CS0_CONFIG_2,
.timing_cfg_3 = CONFIG_SYS_DDR_TIMING_3_667,
.timing_cfg_0 = CONFIG_SYS_DDR_TIMING_0_667,
.timing_cfg_1 = CONFIG_SYS_DDR_TIMING_1_667,
.timing_cfg_2 = CONFIG_SYS_DDR_TIMING_2_667,
.ddr_sdram_cfg = CONFIG_SYS_DDR_CONTROL,
.ddr_sdram_cfg_2 = CONFIG_SYS_DDR_CONTROL_2,
.ddr_sdram_mode = CONFIG_SYS_DDR_MODE_1_667,
.ddr_sdram_mode_2 = CONFIG_SYS_DDR_MODE_2_667,
.ddr_sdram_md_cntl = CONFIG_SYS_DDR_MODE_CONTROL,
.ddr_sdram_interval = CONFIG_SYS_DDR_INTERVAL_667,
.ddr_data_init = CONFIG_MEM_INIT_VALUE,
.ddr_sdram_clk_cntl = CONFIG_SYS_DDR_CLK_CTRL_667,
.ddr_init_addr = CONFIG_SYS_DDR_INIT_ADDR,
.ddr_init_ext_addr = CONFIG_SYS_DDR_INIT_EXT_ADDR,
.timing_cfg_4 = CONFIG_SYS_DDR_TIMING_4,
.timing_cfg_5 = CONFIG_SYS_DDR_TIMING_5,
.ddr_zq_cntl = CONFIG_SYS_DDR_ZQ_CONTROL,
.ddr_wrlvl_cntl = CONFIG_SYS_DDR_WRLVL_CONTROL,
.ddr_sr_cntr = CONFIG_SYS_DDR_SR_CNTR,
.ddr_sdram_rcw_1 = CONFIG_SYS_DDR_RCW_1,
.ddr_sdram_rcw_2 = CONFIG_SYS_DDR_RCW_2
};
fsl_ddr_cfg_regs_t ddr_cfg_regs_800 = {
.cs[0].bnds = CONFIG_SYS_DDR_CS0_BNDS,
.cs[0].config = CONFIG_SYS_DDR_CS0_CONFIG,
.cs[0].config_2 = CONFIG_SYS_DDR_CS0_CONFIG_2,
.timing_cfg_3 = CONFIG_SYS_DDR_TIMING_3_800,
.timing_cfg_0 = CONFIG_SYS_DDR_TIMING_0_800,
.timing_cfg_1 = CONFIG_SYS_DDR_TIMING_1_800,
.timing_cfg_2 = CONFIG_SYS_DDR_TIMING_2_800,
.ddr_sdram_cfg = CONFIG_SYS_DDR_CONTROL,
.ddr_sdram_cfg_2 = CONFIG_SYS_DDR_CONTROL_2,
.ddr_sdram_mode = CONFIG_SYS_DDR_MODE_1_800,
.ddr_sdram_mode_2 = CONFIG_SYS_DDR_MODE_2_800,
.ddr_sdram_md_cntl = CONFIG_SYS_DDR_MODE_CONTROL,
.ddr_sdram_interval = CONFIG_SYS_DDR_INTERVAL_800,
.ddr_data_init = CONFIG_MEM_INIT_VALUE,
.ddr_sdram_clk_cntl = CONFIG_SYS_DDR_CLK_CTRL_800,
.ddr_init_addr = CONFIG_SYS_DDR_INIT_ADDR,
.ddr_init_ext_addr = CONFIG_SYS_DDR_INIT_EXT_ADDR,
.timing_cfg_4 = CONFIG_SYS_DDR_TIMING_4,
.timing_cfg_5 = CONFIG_SYS_DDR_TIMING_5,
.ddr_zq_cntl = CONFIG_SYS_DDR_ZQ_CONTROL,
.ddr_wrlvl_cntl = CONFIG_SYS_DDR_WRLVL_CONTROL,
.ddr_sr_cntr = CONFIG_SYS_DDR_SR_CNTR,
.ddr_sdram_rcw_1 = CONFIG_SYS_DDR_RCW_1,
.ddr_sdram_rcw_2 = CONFIG_SYS_DDR_RCW_2
};
/*
* Fixed sdram init -- doesn't use serial presence detect.
*/
phys_size_t fixed_sdram (void)
{
fsl_ddr_cfg_regs_t ddr_cfg_regs;
size_t ddr_size;
struct cpu_type *cpu;
ulong ddr_freq, ddr_freq_mhz;
cpu = gd->arch.cpu;
ddr_size = CONFIG_SYS_SDRAM_SIZE * 1024 * 1024;
#if defined(CONFIG_SYS_RAMBOOT)
return ddr_size;
#endif
ddr_freq = get_ddr_freq(0);
ddr_freq_mhz = ddr_freq / 1000000;
printf("Configuring DDR for %ld T/s data rate\n", ddr_freq);
if(ddr_freq_mhz <= 400)
memcpy(&ddr_cfg_regs, &ddr_cfg_regs_400, sizeof(ddr_cfg_regs));
else if(ddr_freq_mhz <= 533)
memcpy(&ddr_cfg_regs, &ddr_cfg_regs_533, sizeof(ddr_cfg_regs));
else if(ddr_freq_mhz <= 667)
memcpy(&ddr_cfg_regs, &ddr_cfg_regs_667, sizeof(ddr_cfg_regs));
else if(ddr_freq_mhz <= 800)
memcpy(&ddr_cfg_regs, &ddr_cfg_regs_800, sizeof(ddr_cfg_regs));
else
panic("Unsupported DDR data rate %ld T/s\n", ddr_freq);
/* P1020 and it's derivatives support max 32bit DDR width */
if (cpu->soc_ver == SVR_P1020 || cpu->soc_ver == SVR_P1011) {
ddr_cfg_regs.ddr_sdram_cfg |= SDRAM_CFG_32_BE;
ddr_cfg_regs.cs[0].bnds = 0x0000001F;
}
fsl_ddr_set_memctl_regs(&ddr_cfg_regs, 0, 0);
set_ddr_laws(0, ddr_size, LAW_TRGT_IF_DDR_1);
return ddr_size;
}
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