diff options
author | Markus Klotzbuecher <mk@denx.de> | 2007-08-07 22:30:29 +0200 |
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committer | Markus Klotzbuecher <mk@pollux.denx.de> | 2007-08-07 22:30:29 +0200 |
commit | 78549bbf44bd2c8d1a0730fb068836071751afaa (patch) | |
tree | 92f002dc9772874bc3c884b1caa5607763c2c276 /board/lwmon5/sdram.c | |
parent | 9b7464a2c88614e1061f509c48930a3d240d1a35 (diff) | |
parent | b23b547597ff2375ad13a9ab04e5257a3ad76c99 (diff) |
Merge with git://www.denx.de/git/u-boot.git
Diffstat (limited to 'board/lwmon5/sdram.c')
-rw-r--r-- | board/lwmon5/sdram.c | 662 |
1 files changed, 662 insertions, 0 deletions
diff --git a/board/lwmon5/sdram.c b/board/lwmon5/sdram.c new file mode 100644 index 00000000000..9a4a8eea8fb --- /dev/null +++ b/board/lwmon5/sdram.c @@ -0,0 +1,662 @@ +/* + * (C) Copyright 2006 + * Sylvie Gohl, AMCC/IBM, gohl.sylvie@fr.ibm.com + * Jacqueline Pira-Ferriol, AMCC/IBM, jpira-ferriol@fr.ibm.com + * Thierry Roman, AMCC/IBM, thierry_roman@fr.ibm.com + * Alain Saurel, AMCC/IBM, alain.saurel@fr.ibm.com + * Robert Snyder, AMCC/IBM, rob.snyder@fr.ibm.com + * + * (C) Copyright 2007 + * Stefan Roese, DENX Software Engineering, sr@denx.de. + * + * 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 + */ + +/* define DEBUG for debugging output (obviously ;-)) */ +#if 0 +#define DEBUG +#endif + +#include <common.h> +#include <asm/processor.h> +#include <asm/mmu.h> +#include <asm/io.h> +#include <ppc440.h> + +#include "sdram.h" + +/* + * This DDR2 setup code can dynamically setup the TLB entries for the DDR2 memory + * region. Right now the cache should still be disabled in U-Boot because of the + * EMAC driver, that need it's buffer descriptor to be located in non cached + * memory. + * + * If at some time this restriction doesn't apply anymore, just define + * CFG_ENABLE_SDRAM_CACHE in the board config file and this code should setup + * everything correctly. + */ +#ifdef CFG_ENABLE_SDRAM_CACHE +#define MY_TLB_WORD2_I_ENABLE 0 /* enable caching on SDRAM */ +#else +#define MY_TLB_WORD2_I_ENABLE TLB_WORD2_I_ENABLE /* disable caching on SDRAM */ +#endif + +void program_tlb(u32 phys_addr, u32 virt_addr, u32 size, u32 tlb_word2_i_value); +void dcbz_area(u32 start_address, u32 num_bytes); +void dflush(void); + +#ifdef CONFIG_ADD_RAM_INFO +static u32 is_ecc_enabled(void) +{ + u32 val; + + mfsdram(DDR0_22, val); + val &= DDR0_22_CTRL_RAW_MASK; + if (val) + return 1; + else + return 0; +} + +void board_add_ram_info(int use_default) +{ + PPC440_SYS_INFO board_cfg; + u32 val; + + if (is_ecc_enabled()) + puts(" (ECC"); + else + puts(" (ECC not"); + + get_sys_info(&board_cfg); + printf(" enabled, %d MHz", (board_cfg.freqPLB * 2) / 1000000); + + mfsdram(DDR0_03, val); + val = DDR0_03_CASLAT_DECODE(val); + printf(", CL%d)", val); +} +#endif + +static int wait_for_dlllock(void) +{ + u32 val; + int wait = 0; + + /* + * Wait for the DCC master delay line to finish calibration + */ + mtdcr(ddrcfga, DDR0_17); + val = DDR0_17_DLLLOCKREG_UNLOCKED; + + while (wait != 0xffff) { + val = mfdcr(ddrcfgd); + if ((val & DDR0_17_DLLLOCKREG_MASK) == DDR0_17_DLLLOCKREG_LOCKED) + /* dlllockreg bit on */ + return 0; + else + wait++; + } + debug("0x%04x: DDR0_17 Value (dlllockreg bit): 0x%08x\n", wait, val); + debug("Waiting for dlllockreg bit to raise\n"); + + return -1; +} + +#if defined(CONFIG_DDR_DATA_EYE) +int wait_for_dram_init_complete(void) +{ + u32 val; + int wait = 0; + + /* + * Wait for 'DRAM initialization complete' bit in status register + */ + mtdcr(ddrcfga, DDR0_00); + + while (wait != 0xffff) { + val = mfdcr(ddrcfgd); + if ((val & DDR0_00_INT_STATUS_BIT6) == DDR0_00_INT_STATUS_BIT6) + /* 'DRAM initialization complete' bit */ + return 0; + else + wait++; + } + + debug("DRAM initialization complete bit in status register did not rise\n"); + + return -1; +} + +#define NUM_TRIES 64 +#define NUM_READS 10 + +void denali_core_search_data_eye(u32 start_addr, u32 memory_size) +{ + int k, j; + u32 val; + u32 wr_dqs_shift, dqs_out_shift, dll_dqs_delay_X; + u32 max_passing_cases = 0, wr_dqs_shift_with_max_passing_cases = 0; + u32 passing_cases = 0, dll_dqs_delay_X_sw_val = 0; + u32 dll_dqs_delay_X_start_window = 0, dll_dqs_delay_X_end_window = 0; + volatile u32 *ram_pointer; + u32 test[NUM_TRIES] = { + 0x00000000, 0x00000000, 0xFFFFFFFF, 0xFFFFFFFF, + 0x00000000, 0x00000000, 0xFFFFFFFF, 0xFFFFFFFF, + 0xFFFFFFFF, 0xFFFFFFFF, 0x00000000, 0x00000000, + 0xFFFFFFFF, 0xFFFFFFFF, 0x00000000, 0x00000000, + 0xAAAAAAAA, 0xAAAAAAAA, 0x55555555, 0x55555555, + 0xAAAAAAAA, 0xAAAAAAAA, 0x55555555, 0x55555555, + 0x55555555, 0x55555555, 0xAAAAAAAA, 0xAAAAAAAA, + 0x55555555, 0x55555555, 0xAAAAAAAA, 0xAAAAAAAA, + 0xA5A5A5A5, 0xA5A5A5A5, 0x5A5A5A5A, 0x5A5A5A5A, + 0xA5A5A5A5, 0xA5A5A5A5, 0x5A5A5A5A, 0x5A5A5A5A, + 0x5A5A5A5A, 0x5A5A5A5A, 0xA5A5A5A5, 0xA5A5A5A5, + 0x5A5A5A5A, 0x5A5A5A5A, 0xA5A5A5A5, 0xA5A5A5A5, + 0xAA55AA55, 0xAA55AA55, 0x55AA55AA, 0x55AA55AA, + 0xAA55AA55, 0xAA55AA55, 0x55AA55AA, 0x55AA55AA, + 0x55AA55AA, 0x55AA55AA, 0xAA55AA55, 0xAA55AA55, + 0x55AA55AA, 0x55AA55AA, 0xAA55AA55, 0xAA55AA55 }; + + ram_pointer = (volatile u32 *)start_addr; + + for (wr_dqs_shift = 64; wr_dqs_shift < 96; wr_dqs_shift++) { + /*for (wr_dqs_shift=1; wr_dqs_shift<96; wr_dqs_shift++) {*/ + + /* + * De-assert 'start' parameter. + */ + mtdcr(ddrcfga, DDR0_02); + val = (mfdcr(ddrcfgd) & ~DDR0_02_START_MASK) | DDR0_02_START_OFF; + mtdcr(ddrcfgd, val); + + /* + * Set 'wr_dqs_shift' + */ + mtdcr(ddrcfga, DDR0_09); + val = (mfdcr(ddrcfgd) & ~DDR0_09_WR_DQS_SHIFT_MASK) + | DDR0_09_WR_DQS_SHIFT_ENCODE(wr_dqs_shift); + mtdcr(ddrcfgd, val); + + /* + * Set 'dqs_out_shift' = wr_dqs_shift + 32 + */ + dqs_out_shift = wr_dqs_shift + 32; + mtdcr(ddrcfga, DDR0_22); + val = (mfdcr(ddrcfgd) & ~DDR0_22_DQS_OUT_SHIFT_MASK) + | DDR0_22_DQS_OUT_SHIFT_ENCODE(dqs_out_shift); + mtdcr(ddrcfgd, val); + + passing_cases = 0; + + for (dll_dqs_delay_X = 1; dll_dqs_delay_X < 64; dll_dqs_delay_X++) { + /*for (dll_dqs_delay_X=1; dll_dqs_delay_X<128; dll_dqs_delay_X++) {*/ + /* + * Set 'dll_dqs_delay_X'. + */ + /* dll_dqs_delay_0 */ + mtdcr(ddrcfga, DDR0_17); + val = (mfdcr(ddrcfgd) & ~DDR0_17_DLL_DQS_DELAY_0_MASK) + | DDR0_17_DLL_DQS_DELAY_0_ENCODE(dll_dqs_delay_X); + mtdcr(ddrcfgd, val); + /* dll_dqs_delay_1 to dll_dqs_delay_4 */ + mtdcr(ddrcfga, DDR0_18); + val = (mfdcr(ddrcfgd) & ~DDR0_18_DLL_DQS_DELAY_X_MASK) + | DDR0_18_DLL_DQS_DELAY_4_ENCODE(dll_dqs_delay_X) + | DDR0_18_DLL_DQS_DELAY_3_ENCODE(dll_dqs_delay_X) + | DDR0_18_DLL_DQS_DELAY_2_ENCODE(dll_dqs_delay_X) + | DDR0_18_DLL_DQS_DELAY_1_ENCODE(dll_dqs_delay_X); + mtdcr(ddrcfgd, val); + /* dll_dqs_delay_5 to dll_dqs_delay_8 */ + mtdcr(ddrcfga, DDR0_19); + val = (mfdcr(ddrcfgd) & ~DDR0_19_DLL_DQS_DELAY_X_MASK) + | DDR0_19_DLL_DQS_DELAY_8_ENCODE(dll_dqs_delay_X) + | DDR0_19_DLL_DQS_DELAY_7_ENCODE(dll_dqs_delay_X) + | DDR0_19_DLL_DQS_DELAY_6_ENCODE(dll_dqs_delay_X) + | DDR0_19_DLL_DQS_DELAY_5_ENCODE(dll_dqs_delay_X); + mtdcr(ddrcfgd, val); + + ppcMsync(); + ppcMbar(); + + /* + * Assert 'start' parameter. + */ + mtdcr(ddrcfga, DDR0_02); + val = (mfdcr(ddrcfgd) & ~DDR0_02_START_MASK) | DDR0_02_START_ON; + mtdcr(ddrcfgd, val); + + ppcMsync(); + ppcMbar(); + + /* + * Wait for the DCC master delay line to finish calibration + */ + if (wait_for_dlllock() != 0) { + printf("dlllock did not occur !!!\n"); + printf("denali_core_search_data_eye!!!\n"); + printf("wr_dqs_shift = %d - dll_dqs_delay_X = %d\n", + wr_dqs_shift, dll_dqs_delay_X); + hang(); + } + ppcMsync(); + ppcMbar(); + + if (wait_for_dram_init_complete() != 0) { + printf("dram init complete did not occur !!!\n"); + printf("denali_core_search_data_eye!!!\n"); + printf("wr_dqs_shift = %d - dll_dqs_delay_X = %d\n", + wr_dqs_shift, dll_dqs_delay_X); + hang(); + } + udelay(100); /* wait 100us to ensure init is really completed !!! */ + + /* write values */ + for (j=0; j<NUM_TRIES; j++) { + ram_pointer[j] = test[j]; + + /* clear any cache at ram location */ + __asm__("dcbf 0,%0": :"r" (&ram_pointer[j])); + } + + /* read values back */ + for (j=0; j<NUM_TRIES; j++) { + for (k=0; k<NUM_READS; k++) { + /* clear any cache at ram location */ + __asm__("dcbf 0,%0": :"r" (&ram_pointer[j])); + + if (ram_pointer[j] != test[j]) + break; + } + + /* read error */ + if (k != NUM_READS) + break; + } + + /* See if the dll_dqs_delay_X value passed.*/ + if (j < NUM_TRIES) { + /* Failed */ + passing_cases = 0; + /* break; */ + } else { + /* Passed */ + if (passing_cases == 0) + dll_dqs_delay_X_sw_val = dll_dqs_delay_X; + passing_cases++; + if (passing_cases >= max_passing_cases) { + max_passing_cases = passing_cases; + wr_dqs_shift_with_max_passing_cases = wr_dqs_shift; + dll_dqs_delay_X_start_window = dll_dqs_delay_X_sw_val; + dll_dqs_delay_X_end_window = dll_dqs_delay_X; + } + } + + /* + * De-assert 'start' parameter. + */ + mtdcr(ddrcfga, DDR0_02); + val = (mfdcr(ddrcfgd) & ~DDR0_02_START_MASK) | DDR0_02_START_OFF; + mtdcr(ddrcfgd, val); + + } /* for (dll_dqs_delay_X=0; dll_dqs_delay_X<128; dll_dqs_delay_X++) */ + + } /* for (wr_dqs_shift=0; wr_dqs_shift<96; wr_dqs_shift++) */ + + /* + * Largest passing window is now detected. + */ + + /* Compute dll_dqs_delay_X value */ + dll_dqs_delay_X = (dll_dqs_delay_X_end_window + dll_dqs_delay_X_start_window) / 2; + wr_dqs_shift = wr_dqs_shift_with_max_passing_cases; + + debug("DQS calibration - Window detected:\n"); + debug("max_passing_cases = %d\n", max_passing_cases); + debug("wr_dqs_shift = %d\n", wr_dqs_shift); + debug("dll_dqs_delay_X = %d\n", dll_dqs_delay_X); + debug("dll_dqs_delay_X window = %d - %d\n", + dll_dqs_delay_X_start_window, dll_dqs_delay_X_end_window); + + /* + * De-assert 'start' parameter. + */ + mtdcr(ddrcfga, DDR0_02); + val = (mfdcr(ddrcfgd) & ~DDR0_02_START_MASK) | DDR0_02_START_OFF; + mtdcr(ddrcfgd, val); + + /* + * Set 'wr_dqs_shift' + */ + mtdcr(ddrcfga, DDR0_09); + val = (mfdcr(ddrcfgd) & ~DDR0_09_WR_DQS_SHIFT_MASK) + | DDR0_09_WR_DQS_SHIFT_ENCODE(wr_dqs_shift); + mtdcr(ddrcfgd, val); + debug("DDR0_09=0x%08lx\n", val); + + /* + * Set 'dqs_out_shift' = wr_dqs_shift + 32 + */ + dqs_out_shift = wr_dqs_shift + 32; + mtdcr(ddrcfga, DDR0_22); + val = (mfdcr(ddrcfgd) & ~DDR0_22_DQS_OUT_SHIFT_MASK) + | DDR0_22_DQS_OUT_SHIFT_ENCODE(dqs_out_shift); + mtdcr(ddrcfgd, val); + debug("DDR0_22=0x%08lx\n", val); + + /* + * Set 'dll_dqs_delay_X'. + */ + /* dll_dqs_delay_0 */ + mtdcr(ddrcfga, DDR0_17); + val = (mfdcr(ddrcfgd) & ~DDR0_17_DLL_DQS_DELAY_0_MASK) + | DDR0_17_DLL_DQS_DELAY_0_ENCODE(dll_dqs_delay_X); + mtdcr(ddrcfgd, val); + debug("DDR0_17=0x%08lx\n", val); + + /* dll_dqs_delay_1 to dll_dqs_delay_4 */ + mtdcr(ddrcfga, DDR0_18); + val = (mfdcr(ddrcfgd) & ~DDR0_18_DLL_DQS_DELAY_X_MASK) + | DDR0_18_DLL_DQS_DELAY_4_ENCODE(dll_dqs_delay_X) + | DDR0_18_DLL_DQS_DELAY_3_ENCODE(dll_dqs_delay_X) + | DDR0_18_DLL_DQS_DELAY_2_ENCODE(dll_dqs_delay_X) + | DDR0_18_DLL_DQS_DELAY_1_ENCODE(dll_dqs_delay_X); + mtdcr(ddrcfgd, val); + debug("DDR0_18=0x%08lx\n", val); + + /* dll_dqs_delay_5 to dll_dqs_delay_8 */ + mtdcr(ddrcfga, DDR0_19); + val = (mfdcr(ddrcfgd) & ~DDR0_19_DLL_DQS_DELAY_X_MASK) + | DDR0_19_DLL_DQS_DELAY_8_ENCODE(dll_dqs_delay_X) + | DDR0_19_DLL_DQS_DELAY_7_ENCODE(dll_dqs_delay_X) + | DDR0_19_DLL_DQS_DELAY_6_ENCODE(dll_dqs_delay_X) + | DDR0_19_DLL_DQS_DELAY_5_ENCODE(dll_dqs_delay_X); + mtdcr(ddrcfgd, val); + debug("DDR0_19=0x%08lx\n", val); + + /* + * Assert 'start' parameter. + */ + mtdcr(ddrcfga, DDR0_02); + val = (mfdcr(ddrcfgd) & ~DDR0_02_START_MASK) | DDR0_02_START_ON; + mtdcr(ddrcfgd, val); + + ppcMsync(); + ppcMbar(); + + /* + * Wait for the DCC master delay line to finish calibration + */ + if (wait_for_dlllock() != 0) { + printf("dlllock did not occur !!!\n"); + hang(); + } + ppcMsync(); + ppcMbar(); + + if (wait_for_dram_init_complete() != 0) { + printf("dram init complete did not occur !!!\n"); + hang(); + } + udelay(100); /* wait 100us to ensure init is really completed !!! */ +} +#endif /* CONFIG_DDR_DATA_EYE */ + +#ifdef CONFIG_DDR_ECC +static void wait_ddr_idle(void) +{ + /* + * Controller idle status cannot be determined for Denali + * DDR2 code. Just return here. + */ +} + +static void blank_string(int size) +{ + int i; + + for (i=0; i<size; i++) + putc('\b'); + for (i=0; i<size; i++) + putc(' '); + for (i=0; i<size; i++) + putc('\b'); +} + +static void program_ecc(u32 start_address, + u32 num_bytes, + u32 tlb_word2_i_value) +{ + u32 current_address; + u32 end_address; + u32 address_increment; + u32 val; + char str[] = "ECC generation -"; + char slash[] = "\\|/-\\|/-"; + int loop = 0; + int loopi = 0; + + current_address = start_address; + + sync(); + eieio(); + wait_ddr_idle(); + + if (tlb_word2_i_value == TLB_WORD2_I_ENABLE) { + /* ECC bit set method for non-cached memory */ + address_increment = 4; + end_address = current_address + num_bytes; + + puts(str); + + while (current_address < end_address) { + *((u32 *)current_address) = 0x00000000; + current_address += address_increment; + + if ((loop++ % (2 << 20)) == 0) { + putc('\b'); + putc(slash[loopi++ % 8]); + } + } + + blank_string(strlen(str)); + } else { + /* ECC bit set method for cached memory */ +#if 1 /* test-only: will remove this define later, when ECC problems are solved! */ + /* + * Some boards (like lwmon5) need to preserve the memory + * content upon ECC generation (for the log-buffer). + * Therefore we don't fill the memory with a pattern or + * just zero it, but write the same values back that are + * already in the memory cells. + */ + address_increment = CFG_CACHELINE_SIZE; + end_address = current_address + num_bytes; + + current_address = start_address; + while (current_address < end_address) { + ppcDcbi(current_address); + ppcDcbf(current_address); + current_address += CFG_CACHELINE_SIZE; + } +#else + dcbz_area(start_address, num_bytes); + dflush(); +#endif + } + + sync(); + eieio(); + wait_ddr_idle(); + + /* Clear error status */ + mfsdram(DDR0_00, val); + mtsdram(DDR0_00, val | DDR0_00_INT_ACK_ALL); + + /* Set 'int_mask' parameter to functionnal value */ + mfsdram(DDR0_01, val); + mtsdram(DDR0_01, ((val &~ DDR0_01_INT_MASK_MASK) | DDR0_01_INT_MASK_ALL_OFF)); + + sync(); + eieio(); + wait_ddr_idle(); +} +#endif + +static __inline__ u32 get_mcsr(void) +{ + u32 val; + + asm volatile("mfspr %0, 0x23c" : "=r" (val) :); + return val; +} + +static __inline__ void set_mcsr(u32 val) +{ + asm volatile("mtspr 0x23c, %0" : "=r" (val) :); +} + +/************************************************************************* + * + * initdram -- 440EPx's DDR controller is a DENALI Core + * + ************************************************************************/ +long int initdram (int board_type) +{ + u32 val; + +#if 0 /* test-only: will remove this define later, when ECC problems are solved! */ + /* CL=3 */ + mtsdram(DDR0_02, 0x00000000); + + mtsdram(DDR0_00, 0x0000190A); + mtsdram(DDR0_01, 0x01000000); + mtsdram(DDR0_03, 0x02030603); /* A suitable burst length was taken. CAS is right for our board */ + + mtsdram(DDR0_04, 0x0A030300); + mtsdram(DDR0_05, 0x02020308); + mtsdram(DDR0_06, 0x0103C812); + mtsdram(DDR0_07, 0x00090100); + mtsdram(DDR0_08, 0x02c80001); + mtsdram(DDR0_09, 0x00011D5F); + mtsdram(DDR0_10, 0x00000300); + mtsdram(DDR0_11, 0x000CC800); + mtsdram(DDR0_12, 0x00000003); + mtsdram(DDR0_14, 0x00000000); + mtsdram(DDR0_17, 0x1e000000); + mtsdram(DDR0_18, 0x1e1e1e1e); + mtsdram(DDR0_19, 0x1e1e1e1e); + mtsdram(DDR0_20, 0x0B0B0B0B); + mtsdram(DDR0_21, 0x0B0B0B0B); +#ifdef CONFIG_DDR_ECC + mtsdram(DDR0_22, 0x00267F0B | DDR0_22_CTRL_RAW_ECC_ENABLE); /* enable ECC */ +#else + mtsdram(DDR0_22, 0x00267F0B); +#endif + + mtsdram(DDR0_23, 0x01000000); + mtsdram(DDR0_24, 0x01010001); + + mtsdram(DDR0_26, 0x2D93028A); + mtsdram(DDR0_27, 0x0784682B); + + mtsdram(DDR0_28, 0x00000080); + mtsdram(DDR0_31, 0x00000000); + mtsdram(DDR0_42, 0x01000006); + + mtsdram(DDR0_43, 0x030A0200); + mtsdram(DDR0_44, 0x00000003); + mtsdram(DDR0_02, 0x00000001); /* Activate the denali core */ +#else + /* CL=4 */ + mtsdram(DDR0_02, 0x00000000); + + mtsdram(DDR0_00, 0x0000190A); + mtsdram(DDR0_01, 0x01000000); + mtsdram(DDR0_03, 0x02040803); /* A suitable burst length was taken. CAS is right for our board */ + + mtsdram(DDR0_04, 0x0B030300); + mtsdram(DDR0_05, 0x02020308); + mtsdram(DDR0_06, 0x0003C812); + mtsdram(DDR0_07, 0x00090100); + mtsdram(DDR0_08, 0x03c80001); + mtsdram(DDR0_09, 0x00011D5F); + mtsdram(DDR0_10, 0x00000300); + mtsdram(DDR0_11, 0x000CC800); + mtsdram(DDR0_12, 0x00000003); + mtsdram(DDR0_14, 0x00000000); + mtsdram(DDR0_17, 0x1e000000); + mtsdram(DDR0_18, 0x1e1e1e1e); + mtsdram(DDR0_19, 0x1e1e1e1e); + mtsdram(DDR0_20, 0x0B0B0B0B); + mtsdram(DDR0_21, 0x0B0B0B0B); +#ifdef CONFIG_DDR_ECC + mtsdram(DDR0_22, 0x00267F0B | DDR0_22_CTRL_RAW_ECC_ENABLE); /* enable ECC */ +#else + mtsdram(DDR0_22, 0x00267F0B); +#endif + + mtsdram(DDR0_23, 0x01000000); + mtsdram(DDR0_24, 0x01010001); + + mtsdram(DDR0_26, 0x2D93028A); + mtsdram(DDR0_27, 0x0784682B); + + mtsdram(DDR0_28, 0x00000080); + mtsdram(DDR0_31, 0x00000000); + mtsdram(DDR0_42, 0x01000008); + + mtsdram(DDR0_43, 0x050A0200); + mtsdram(DDR0_44, 0x00000005); + mtsdram(DDR0_02, 0x00000001); /* Activate the denali core */ +#endif + + wait_for_dlllock(); + + /* + * Program tlb entries for this size (dynamic) + */ + program_tlb(0, 0, CFG_MBYTES_SDRAM << 20, MY_TLB_WORD2_I_ENABLE); + + /* + * Setup 2nd TLB with same physical address but different virtual address + * with cache enabled. This is done for fast ECC generation. + */ + program_tlb(0, CFG_DDR_CACHED_ADDR, CFG_MBYTES_SDRAM << 20, 0); + +#ifdef CONFIG_DDR_DATA_EYE + /* + * Perform data eye search if requested. + */ + denali_core_search_data_eye(CFG_DDR_CACHED_ADDR, CFG_MBYTES_SDRAM << 20); + + /* + * Clear possible errors resulting from data-eye-search. + * If not done, then we could get an interrupt later on when + * exceptions are enabled. + */ + val = get_mcsr(); + set_mcsr(val); +#endif + +#ifdef CONFIG_DDR_ECC + /* + * If ECC is enabled, initialize the parity bits. + */ + program_ecc(CFG_DDR_CACHED_ADDR, CFG_MBYTES_SDRAM << 20, 0); +#endif + + return (CFG_MBYTES_SDRAM << 20); +} |