tiny4412 --Uboot移植(5) DDR3內存
阿新 • • 發佈：2019-02-17
ctc ctr ubun cred value redist top oot part
開發環境：win10 64位 + VMware12 + Ubuntu14.04 32位
工具鏈：linaro提供的gcc-linaro-6.1.1-2016.08-x86_64_arm-linux-gnueabi
要移植的u-boot版本：u-boot-2016-11
Tiny4412開發板硬件版本為：
底板： Tiny4412SDK 1312B
核心板：Tiny4412 - 1306
1、原理圖
從原理圖上可以看出，4顆ddr3@16bit，用到一個控制器兩個片選(chip0,chip1).共1G
2，DDR3初始化代碼
diff --git a/arch/arm/mach-exynos/Makefile b/arch/arm/mach-exynos/Makefil index 5575adf..5889802 100644 --- a/arch/arm/mach-exynos/Makefile +++ b/arch/arm/mach-exynos/Makefile @@ -15,7 +15,7 @@ ifdef CONFIG_SPL_BUILD obj-$(CONFIG_EXYNOS5) += clock_init_exynos5.o obj-$(CONFIG_EXYNOS5) += dmc_common.o dmc_init_ddr3.o obj-$(CONFIG_EXYNOS4210)+= dmc_init_exynos4.o clock_init_exynos4.o -obj-$(CONFIG_EXYNOS4412)+= dmc_init_exynos4.o clock_init_exynos4412.o+obj-$(CONFIG_EXYNOS4412)+= dmc_init_exynos4412.o clock_init_exynos4412.o obj-y += spl_boot.o tzpc.o obj-y += lowlevel_init.o
diff --git a/arch/arm/mach-exynos/dmc_init_exynos4412.c b/arch/arm/mach-e new file mode 100644 index 0000000..b2c0c0d --- /dev/null +++ b/arch/arm/mach-exynos/dmc_init_exynos4412.c @@ -0,0 +1,254@@ +/*^M + * Memory setup for board based on EXYNOS4412^M + *^M + * 2016^M + * Modified by AP0904225 <[email protected]>^M + *^M + * Copyright (C) 2013 Samsung Electronics^M + * Rajeshwari Shinde <[email protected]>^M + *^M + * See file CREDITS for list of people who contributed to this^M + * project.^M + *^M + * This program is free software; you can redistribute it and/or^M + * modify it under the terms of the GNU General Public License as^M + * published by the Free Software Foundation; either version 2 of^M + * the License, or (at your option) any later version.^M + *^M + * This program is distributed in the hope that it will be useful,^M + * but WITHOUT ANY WARRANTY; without even the implied warranty of^M + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the^M + * GNU General Public License for more details.^M + *^M + * You should have received a copy of the GNU General Public License^M + * along with this program; if not, write to the Free Software^M + * Foundation, Inc., 59 Temple Place, Suite 330, Boston,^M + * MA 02111-1307 USA^M + */^M +^M +#include <config.h>^M +#include <asm/arch/dmc.h>^M +#include "common_setup.h"^M +#include "exynos4412_setup.h"^M +^M +#ifdef TINY4412^M +struct mem_timings mem = {^M + .direct_cmd_msr = {^M + DIRECT_CMD1, DIRECT_CMD2, DIRECT_CMD3, DIRECT_CMD4^M + },^M + .timingref = 0x000000BB,^M + .timingrow = 0x4046654f,^M + .timingdata = 0x46400506,^M + .timingpower = 0x52000A3C,^M + .zqcontrol = 0xE3854C03,^M + .control0 = 0x71101008,^M + .control1 = 0xe0000086,^M + .control2 = 0x00000000,^M + .concontrol = 0x0FFF301A,^M + .prechconfig = 0xff000000,^M + .memcontrol = 0x00312640, /* Tiny4412-1412 core board only use + .memconfig0 = 0x40e01333, /* ROW is 15bit */^M + .memconfig1 = 0x60e01333, /* DMC0 address up to 0x7FFFFFFF */^M + .dll_resync = FORCE_DLL_RESYNC,^M + .dll_on = DLL_CONTROL_ON,^M +^M +};^M +#else^M +struct mem_timings mem = {^M + .direct_cmd_msr = {^M + DIRECT_CMD1, DIRECT_CMD2, DIRECT_CMD3, DIRECT_CMD4^M + },^M + .timingref = TIMINGREF_VAL,^M + .timingrow = TIMINGROW_VAL,^M + .timingdata = TIMINGDATA_VAL,^M + .timingpower = TIMINGPOWER_VAL,^M + .zqcontrol = ZQ_CONTROL_VAL,^M + .control0 = CONTROL0_VAL,^M + .control1 = CONTROL1_VAL,^M + .control2 = CONTROL2_VAL,^M + .concontrol = CONCONTROL_VAL,^M + .prechconfig = PRECHCONFIG,^M + .memcontrol = MEMCONTROL_VAL,^M + .memconfig0 = MEMCONFIG0_VAL,^M + .memconfig1 = MEMCONFIG1_VAL,^M + .dll_resync = FORCE_DLL_RESYNC,^M + .dll_on = DLL_CONTROL_ON,^M +};^M +#endif^M +^M +static void phy_control_reset(int ctrl_no, struct exynos4_dmc *dmc)^M +{^M + if (ctrl_no) {^M + writel((mem.control1 | (1 << mem.dll_resync)),^M + &dmc->phycontrol1);^M + writel((mem.control1 | (0 << mem.dll_resync)),^M + &dmc->phycontrol1);^M + } else {^M + writel((mem.control0 | (0 << mem.dll_on)),^M + &dmc->phycontrol0);^M + writel((mem.control0 | (1 << mem.dll_on)),^M + &dmc->phycontrol0);^M + }^M +}^M +^M +static void dmc_config_mrs(struct exynos4_dmc *dmc, int chip)^M +{^M + int i;^M + unsigned long mask = 0;^M +^M + if (chip)^M + mask = DIRECT_CMD_CHIP1_SHIFT;^M +^M + for (i = 0; i < MEM_TIMINGS_MSR_COUNT; i++) {^M + writel(mem.direct_cmd_msr[i] | mask,^M + &dmc->directcmd);^M + }^M +}^M +^M +static void dmc_init(struct exynos4_dmc *dmc)^M +{^M + /*^M + * DLL Parameter Setting:^M + * Termination: Enable R/W^M + * Phase Delay for DQS Cleaning: 180‘ Shift^M + */^M + writel(mem.control1, &dmc->phycontrol1);^M +^M + /*^M + * ZQ Calibration^M + * Termination: Disable^M + * Auto Calibration Start: Enable^M + */^M + writel(mem.zqcontrol, &dmc->phyzqcontrol);^M + sdelay(0x100000);^M +^M + /*^M + * Update DLL Information:^M + * Force DLL Resyncronization^M + */^M + phy_control_reset(1, dmc);^M + phy_control_reset(0, dmc);^M +^M + /* Set DLL Parameters */^M + writel(mem.control1, &dmc->phycontrol1);^M +^M + /* DLL Start */^M + writel((mem.control0 | CTRL_START | CTRL_DLL_ON), &dmc->phycontrol0); +^M + writel(mem.control2, &dmc->phycontrol2);^M +^M + /* Set Clock Ratio of Bus clock to Memory Clock */^M + writel(mem.concontrol, &dmc->concontrol);^M +^M + /*^M + * Memor Burst length: 8^M + * Number of chips: 2^M + * Memory Bus width: 32 bit^M + * Memory Type: DDR3^M + * Additional Latancy for PLL: 1 Cycle^M + */^M + writel(mem.memcontrol, &dmc->memcontrol);^M +^M + writel(mem.memconfig0, &dmc->memconfig0);^M + writel(mem.memconfig1, &dmc->memconfig1);^M +/*^M +#ifdef TINY4412^M + writel(0x8000001F, &dmc->ivcontrol);^M +#endif^M +*/^M + /* Config Precharge Policy */^M + writel(mem.prechconfig, &dmc->prechconfig);^M + /*^M + * TimingAref, TimingRow, TimingData, TimingPower Setting:^M + * Values as per Memory AC Parameters^M + */^M + writel(mem.timingref, &dmc->timingref);^M + writel(mem.timingrow, &dmc->timingrow);^M + writel(mem.timingdata, &dmc->timingdata);^M + writel(mem.timingpower, &dmc->timingpower);^M +^M + /* Chip0: NOP Command: Assert and Hold CKE to high level */^M + writel(DIRECT_CMD_NOP, &dmc->directcmd);^M + sdelay(0x100000);^M +^M + /* Chip0: EMRS2, EMRS3, EMRS, MRS Commands Using Direct Command */^M + dmc_config_mrs(dmc, 0);^M + sdelay(0x100000);^M +^M + /* Chip0: ZQINIT */^M + writel(DIRECT_CMD_ZQ, &dmc->directcmd);^M + sdelay(0x100000);^M +^M +//#ifndef TINY4412^M + /* Chip1: NOP Command: Assert and Hold CKE to high level */^M + writel((DIRECT_CMD_NOP | DIRECT_CMD_CHIP1_SHIFT), &dmc->directcmd);^M + sdelay(0x100000);^M +^M + /* Chip1: EMRS2, EMRS3, EMRS, MRS Commands Using Direct Command */^M + dmc_config_mrs(dmc, 1);^M + sdelay(0x100000);^M +^M + /* Chip1: ZQINIT */^M + writel((DIRECT_CMD_ZQ | DIRECT_CMD_CHIP1_SHIFT), &dmc->directcmd);^M + sdelay(0x100000);^M +//#endif^M +^M + phy_control_reset(1, dmc);^M + sdelay(0x100000);^M +^M + /* turn on DREX0, DREX1 */^M + writel((mem.concontrol | AREF_EN), &dmc->concontrol);^M +}^M +^M +void mem_ctrl_init(int reset)^M +{^M + struct exynos4_dmc *dmc;^M +^M + /*^M + * Async bridge configuration at CPU_core:^M + * 1: half_sync^M + * 0: full_sync^M + */^M + writel(1, ASYNC_CONFIG);^M +^M +#ifndef TINY4412^M +#ifdef CONFIG_ORIGE^M + /* Interleave: 2Bit, Interleave_bit1: 0x15, Interleave_bit0: 0x7 */^M + writel(APB_SFR_INTERLEAVE_CONF_VAL, EXYNOS4_MIU_BASE ^M + APB_SFR_INTERLEAVE_CONF_OFFSET);^M + /* Update MIU Configuration */^M + writel(APB_SFR_ARBRITATION_CONF_VAL, EXYNOS4_MIU_BASE ^M + APB_SFR_ARBRITATION_CONF_OFFSET);^M +#else^M + writel(APB_SFR_INTERLEAVE_CONF_VAL, EXYNOS4_MIU_BASE ^M + APB_SFR_INTERLEAVE_CONF_OFFSET);^M + writel(INTERLEAVE_ADDR_MAP_START_ADDR, EXYNOS4_MIU_BASE ^M + ABP_SFR_INTERLEAVE_ADDRMAP_START_OFFSET);^M + writel(INTERLEAVE_ADDR_MAP_END_ADDR, EXYNOS4_MIU_BASE ^M + ABP_SFR_INTERLEAVE_ADDRMAP_END_OFFSET);^M + writel(INTERLEAVE_ADDR_MAP_EN, EXYNOS4_MIU_BASE ^M + ABP_SFR_SLV_ADDRMAP_CONF_OFFSET);^M +#ifdef CONFIG_MIU_LINEAR^M + writel(SLAVE0_SINGLE_ADDR_MAP_START_ADDR, EXYNOS4_MIU_BASE ^M + ABP_SFR_SLV0_SINGLE_ADDRMAP_START_OFFSET);^M + writel(SLAVE0_SINGLE_ADDR_MAP_END_ADDR, EXYNOS4_MIU_BASE ^M + ABP_SFR_SLV0_SINGLE_ADDRMAP_END_OFFSET);^M + writel(SLAVE1_SINGLE_ADDR_MAP_START_ADDR, EXYNOS4_MIU_BASE ^M + ABP_SFR_SLV1_SINGLE_ADDRMAP_START_OFFSET);^M + writel(SLAVE1_SINGLE_ADDR_MAP_END_ADDR, EXYNOS4_MIU_BASE ^M + ABP_SFR_SLV1_SINGLE_ADDRMAP_END_OFFSET);^M + writel(APB_SFR_SLV_ADDR_MAP_CONF_VAL, EXYNOS4_MIU_BASE ^M + ABP_SFR_SLV_ADDRMAP_CONF_OFFSET);^M +#endif^M +#endif^M +#endif^M +^M + /* DREX0 */^M + dmc = (struct exynos4_dmc *)samsung_get_base_dmc_ctrl();^M + dmc_init(dmc);^M +^M + /* DREX1 */^M + dmc = (struct exynos4_dmc *)(samsung_get_base_dmc_ctrl()^M + +DMC_OFFSET);^M + dmc_init(dmc);^M +}^M
diff --git a/arch/arm/mach-exynos/exynos4412_setup.h b/arch/arm/mach-exyn index 11e9d09..fced9a8 100644 --- a/arch/arm/mach-exynos/exynos4412_setup.h +++ b/arch/arm/mach-exynos/exynos4412_setup.h +/* Bus Configuration Register Address */^M +#define ASYNC_CONFIG 0x10010350^M +^M +/* DMC */^M +#define DIRECT_CMD_NOP 0x07000000^M +#define DIRECT_CMD_ZQ 0x0a000000^M +#define DIRECT_CMD_CHIP1_SHIFT (1 << 20)^M +#define MEM_TIMINGS_MSR_COUNT 4^M +#define CTRL_START (1 << 0)^M +#define CTRL_DLL_ON (1 << 1)^M +#define AREF_EN (1 << 5)^M +#define DRV_TYPE (1 << 6)^M +^M +struct mem_timings {^M + unsigned direct_cmd_msr[MEM_TIMINGS_MSR_COUNT];^M + unsigned timingref;^M + unsigned timingrow;^M + unsigned timingdata;^M + unsigned timingpower;^M + unsigned zqcontrol;^M + unsigned control0;^M + unsigned control1;^M + unsigned control2;^M + unsigned concontrol;^M + unsigned prechconfig;^M + unsigned memcontrol;^M + unsigned memconfig0;^M + unsigned memconfig1;^M + unsigned dll_resync;^M + unsigned dll_on;^M +};^M +^M +/* MIU */^M +/* MIU Config Register Offsets*/^M +#define APB_SFR_INTERLEAVE_CONF_OFFSET 0x400^M +#define APB_SFR_ARBRITATION_CONF_OFFSET 0xC00^M +#define ABP_SFR_SLV_ADDRMAP_CONF_OFFSET 0x800^M +#define ABP_SFR_INTERLEAVE_ADDRMAP_START_OFFSET 0x808^M +#define ABP_SFR_INTERLEAVE_ADDRMAP_END_OFFSET 0x810^M +#define ABP_SFR_SLV0_SINGLE_ADDRMAP_START_OFFSET 0x818^M +#define ABP_SFR_SLV0_SINGLE_ADDRMAP_END_OFFSET 0x820^M +#define ABP_SFR_SLV1_SINGLE_ADDRMAP_START_OFFSET 0x828^M +#define ABP_SFR_SLV1_SINGLE_ADDRMAP_END_OFFSET 0x830^M +^M +^M +#ifdef TINY4412^M +/* Interleave: 2Bit, Interleave_bit1: 0x15, Interleave_bit0: 0x7 */^M +#define APB_SFR_INTERLEAVE_CONF_VAL 0x20001507^M +#define APB_SFR_ARBRITATION_CONF_VAL 0x00000001^M +#endif^M +^M +#define INTERLEAVE_ADDR_MAP_START_ADDR 0x40000000^M +#define INTERLEAVE_ADDR_MAP_END_ADDR 0xbfffffff^M +#define INTERLEAVE_ADDR_MAP_EN 0x00000001^M +^M +#ifdef CONFIG_MIU_1BIT_INTERLEAVED^M +/* Interleave_bit0: 0xC*/^M +#define APB_SFR_INTERLEAVE_CONF_VAL 0x0000000c^M +#endif^M +#ifdef CONFIG_MIU_2BIT_INTERLEAVED^M +/* Interleave: 2Bit, Interleave_bit1: 0x15, Interleave_bit0: 0xc */^M +#define APB_SFR_INTERLEAVE_CONF_VAL 0x2000150c^M +#endif^M +#define SLAVE0_SINGLE_ADDR_MAP_START_ADDR 0x40000000^M +#define SLAVE0_SINGLE_ADDR_MAP_END_ADDR 0x7fffffff^M +#define SLAVE1_SINGLE_ADDR_MAP_START_ADDR 0x80000000^M +#define SLAVE1_SINGLE_ADDR_MAP_END_ADDR 0xbfffffff^M +/* Enable SME0 and SME1*/^M +#define APB_SFR_SLV_ADDR_MAP_CONF_VAL 0x00000006^M +^M +#define FORCE_DLL_RESYNC 3^M +#define DLL_CONTROL_ON 1^M +^M +#define DIRECT_CMD1 0x00020000^M +#define DIRECT_CMD2 0x00030000^M +#define DIRECT_CMD3 0x00010002^M +#define DIRECT_CMD4 0x00000328^M +^M +#define CTRL_ZQ_MODE_NOTERM (0x1 << 0)^M +#define CTRL_ZQ_START (0x1 << 1)^M +#define CTRL_ZQ_DIV (0 << 4)^M +#define CTRL_ZQ_MODE_DDS (0x7 << 8)^M +#define CTRL_ZQ_MODE_TERM (0x2 << 11)^M +#define CTRL_ZQ_FORCE_IMPN (0x5 << 14)^M +#define CTRL_ZQ_FORCE_IMPP (0x6 << 17)^M +#define CTRL_DCC (0xE38 << 20)^M +#define ZQ_CONTROL_VAL (CTRL_ZQ_MODE_NOTERM | CTRL_ZQ_START\^M + | CTRL_ZQ_DIV | CTRL_ZQ_MODE_DDS\^M + | CTRL_ZQ_MODE_TERM | CTRL_ZQ_FORCE_IMPN\^M + | CTRL_ZQ_FORCE_IMPP | CTRL_DCC)^M +^M +#define ASYNC (0 << 0)^M +#define CLK_RATIO (1 << 1)^M +#define DIV_PIPE (1 << 3)^M +#define AWR_ON (1 << 4)^M +#define AREF_DISABLE (0 << 5)^M +#define DRV_TYPE_DISABLE (0 << 6)^M +#define CHIP0_NOT_EMPTY (0 << 8)^M +#define CHIP1_NOT_EMPTY (0 << 9)^M +#define DQ_SWAP_DISABLE (0 << 10)^M +#define QOS_FAST_DISABLE (0 << 11)^M +#define RD_FETCH (0x3 << 12)^M +#define TIMEOUT_LEVEL0 (0xFFF << 16)^M +#define CONCONTROL_VAL (ASYNC | CLK_RATIO | DIV_PIPE | AWR_ON\^M + | AREF_DISABLE | DRV_TYPE_DISABLE\^M + | CHIP0_NOT_EMPTY | CHIP1_NOT_EMPTY\^M + | DQ_SWAP_DISABLE | QOS_FAST_DISABLE\^M + | RD_FETCH | TIMEOUT_LEVEL0)^M +^M +#define CLK_STOP_DISABLE (0 << 1)^M +#define DPWRDN_DISABLE (0 << 2)^M +#define DPWRDN_TYPE (0 << 3)^M +#define TP_DISABLE (0 << 4)^M +#define DSREF_DIABLE (0 << 5)^M +#define ADD_LAT_PALL (1 << 6)^M +#define MEM_TYPE_DDR3 (0x6 << 8)^M +#define MEM_WIDTH_32 (0x2 << 12)^M +#define NUM_CHIP_2 (1 << 16)^M +#define BL_8 (0x3 << 20)^M +#define MEMCONTROL_VAL (CLK_STOP_DISABLE | DPWRDN_DISABLE\^M + | DPWRDN_TYPE | TP_DISABLE | DSREF_DIABLE\^M + | ADD_LAT_PALL | MEM_TYPE_DDR3 | MEM_WIDTH_32\^M + | NUM_CHIP_2 | BL_8)^M +^M +^M +#define CHIP_BANK_8 (0x3 << 0)^M +#define CHIP_ROW_14 (0x2 << 4)^M +#define CHIP_COL_10 (0x3 << 8)^M +#define CHIP_MAP_INTERLEAVED (1 << 12)^M +#define CHIP_MASK (0xe0 << 16)^M +#ifdef CONFIG_MIU_LINEAR^M +#define CHIP0_BASE (0x40 << 24)^M +#define CHIP1_BASE (0x60 << 24)^M +#else^M +#define CHIP0_BASE (0x20 << 24)^M +#define CHIP1_BASE (0x40 << 24)^M +#endif^M +#define MEMCONFIG0_VAL (CHIP_BANK_8 | CHIP_ROW_14 | CHIP_COL_10\^M + | CHIP_MAP_INTERLEAVED | CHIP_MASK | CHIP0_BASE)^M +#define MEMCONFIG1_VAL (CHIP_BANK_8 | CHIP_ROW_14 | CHIP_COL_10\^M + | CHIP_MAP_INTERLEAVED | CHIP_MASK | CHIP1_BASE)^M +^M +#define TP_CNT (0xff << 24)^M +#define PRECHCONFIG TP_CNT^M +^M +#define CTRL_OFF (0 << 0)^M +#define CTRL_DLL_OFF (0 << 1)^M +#define CTRL_HALF (0 << 2)^M +#define CTRL_DFDQS (1 << 3)^M +#define DQS_DELAY (0 << 4)^M +#define CTRL_START_POINT (0x10 << 8)^M +#define CTRL_INC (0x10 << 16)^M +#define CTRL_FORCE (0x71 << 24)^M +#define CONTROL0_VAL (CTRL_OFF | CTRL_DLL_OFF | CTRL_HALF\^M + | CTRL_DFDQS | DQS_DELAY | CTRL_START_POINT\^M + | CTRL_INC | CTRL_FORCE)^M +^M +#define CTRL_SHIFTC (0x6 << 0)^M +#define CTRL_REF (8 << 4)^M +#define CTRL_SHGATE (1 << 29)^M +#define TERM_READ_EN (1 << 30)^M +#define TERM_WRITE_EN (1 << 31)^M +#define CONTROL1_VAL (CTRL_SHIFTC | CTRL_REF | CTRL_SHGATE\^M + | TERM_READ_EN | TERM_WRITE_EN)^M +^M +#define CONTROL2_VAL 0x00000000^M +^M +#ifdef TINY4412^M +#define TIMINGREF_VAL 0x000000BB^M +#define TIMINGROW_VAL 0x4046654f^M +#define TIMINGDATA_VAL 0x46400506^M +#define TIMINGPOWER_VAL 0x52000A3C^M +#else^M +#define TIMINGREF_VAL 0x000000BC^M +#ifdef DRAM_CLK_330^M +#define TIMINGROW_VAL 0x3545548d^M +#define TIMINGDATA_VAL 0x45430506^M +#define TIMINGPOWER_VAL 0x4439033c^M +#endif^M +#ifdef DRAM_CLK_400^M +#define TIMINGROW_VAL 0x45430506^M +#define TIMINGDATA_VAL 0x56500506^M +#define TIMINGPOWER_VAL 0x5444033d^M +#endif^M +#endif^M +^M +^M +^M + #endif /*__EXYNOS4412_SETUP__ */
diff --git a/arch/arm/mach-exynos/lowlevel_init.c b/arch/arm/mach-exynos/ index c69be57..2963b9d 100644 --- a/arch/arm/mach-exynos/lowlevel_init.c +++ b/arch/arm/mach-exynos/lowlevel_init.c @@ -229,7 +229,34 @@ int do_lowlevel_init(void) printascii("UART0 init ... OK !!!\n\r"); #endif mem_ctrl_init(actions & DO_MEM_RESET); - tzpc_init(); + + writel(0x44444444, 0x40000000); + if(readl(0x40000000) == 0x44444444) + printascii("addriss is :0x40000000 ;value is 0x44444444... !!!\n\ + + writel(0x55555555, 0x50000004); + if(readl(0x50000004) == 0x55555555) + printascii("addriss is :0x50000004 ;value is 0x55555555... !!!\n\ + + writel(0x66666666, 0x60000000); + if(readl(0x60000000) == 0x66666666) + printascii("addriss is :0x60000000 ;value is 0x66666666... !!!\n\ + + writel(0x77777777, 0x70000000); + if(readl(0x70000000) == 0x77777777) + printascii("addriss is :0x70000000 ;value is 0x77777777... !!!\n\ + + writel(0x88888888, 0x70000001); + if(readl(0x70000001) == 0x88888888) + printascii("addriss is :0x70000001 ;value is 0x88888888... !!!\n\ + + writel(0x88888888, 0x7000000f); + if(readl(0x7000000f) == 0x88888888) + printascii("addriss is :0x7000000f ;value is 0x88888888... !!!\n\ + + #ifndef TINY4412 + tzpc_init(); + #endif } return actions & DO_WAKEUP;
3、測試結果
UART0 init ... OK !!! addriss is :0x40000000 ;value is 0x44444444... !!! addriss is :0x50000004 ;value is 0x55555555... !!! addriss is :0x60000000 ;value is 0x66666666... !!! addriss is :0x70000000 ;value is 0x77777777... !!! addriss is :0x70000001 ;value is 0x88888888... !!! addriss is :0x7000000f ;value is 0x88888888... !!!
問題：內存測試從0x4000_0000開始，理論到0x7fff_ffff ；而我只能寫到0x7000_000f ；目前不知道原因，且會對後面造成什麽影響。
tiny4412 --Uboot移植(5) DDR3內存