diff options
author | Grant Erickson <gerickson@nuovations.com> | 2008-05-22 21:44:24 (GMT) |
---|---|---|
committer | Stefan Roese <sr@denx.de> | 2008-06-03 18:21:20 (GMT) |
commit | 8a24c07ba5da2c72ad1f05e3eb8a463750200c98 (patch) | |
tree | 7ac23429134e6127a77977a5f19a729de9d5ec03 /board/amcc | |
parent | c821b5f120bedf73867513466412587c6912a8f8 (diff) | |
download | u-boot-fsl-qoriq-8a24c07ba5da2c72ad1f05e3eb8a463750200c98.tar.xz |
ppc4xx: Enable Primordial Stack for 40x and Unify ECC Handling
This patch (Part 2 of 2):
* Rolls up a suite of changes to enable correct primordial stack and
global data handling when the data cache is used for such a purpose
for PPC40x-variants (i.e. CFG_INIT_DCACHE_CS).
* Related to the first, unifies DDR2 SDRAM and ECC initialization by
eliminating redundant ECC initialization implementations and moving
redundant SDRAM initialization out of board code into shared 4xx
code.
* Enables MCSR visibility on the 405EX(r).
* Enables the use of the data cache for initial RAM on
both AMCC's Kilauea and Makalu and removes a redundant
CFG_POST_MEMORY flag from each board's CONFIG_POST value.
- Removed, per Stefan Roese's request, defunct memory.c file for
Makalu and rolled sdram_init from it into makalu.c.
With respect to the 4xx DDR initialization and ECC unification, there
is certainly more work that can and should be done (file renaming,
etc.). However, that can be handled at a later date on a second or
third pass. As it stands, this patch moves things forward in an
incremental yet positive way for those platforms that utilize this
code and the features associated with it.
Signed-off-by: Grant Erickson <gerickson@nuovations.com>
Signed-off-by: Stefan Roese <sr@denx.de>
Diffstat (limited to 'board/amcc')
-rw-r--r-- | board/amcc/kilauea/init.S | 227 | ||||
-rw-r--r-- | board/amcc/kilauea/memory.c | 5 | ||||
-rw-r--r-- | board/amcc/makalu/Makefile | 2 | ||||
-rw-r--r-- | board/amcc/makalu/init.S | 125 | ||||
-rw-r--r-- | board/amcc/makalu/makalu.c | 5 | ||||
-rw-r--r-- | board/amcc/makalu/memory.c | 188 |
6 files changed, 135 insertions, 417 deletions
diff --git a/board/amcc/kilauea/init.S b/board/amcc/kilauea/init.S index 8cd534c..bf47d6b 100644 --- a/board/amcc/kilauea/init.S +++ b/board/amcc/kilauea/init.S @@ -1,8 +1,11 @@ /* + * Copyright (c) 2008 Nuovation System Designs, LLC + * Grant Erickson <gerickson@nuovations.com> + * * (C) Copyright 2007-2008 * Stefan Roese, DENX Software Engineering, sr@denx.de. * - * Based on code provided from UDTech and AMCC + * Originally based on code provided from UDTech and AMCC * * See file CREDITS for list of people who contributed to this * project. @@ -30,125 +33,135 @@ #include <ppc_defs.h> #define mtsdram_as(reg, value) \ - addi r4,0,reg ; \ - mtdcr memcfga,r4 ; \ - addis r4,0,value@h ; \ - ori r4,r4,value@l ; \ - mtdcr memcfgd,r4 ; + addi r4,0,reg ; \ + mtdcr memcfga,r4 ; \ + addis r4,0,value@h ; \ + ori r4,r4,value@l ; \ + mtdcr memcfgd,r4 ; + +#if defined(CONFIG_DDR_ECC) + .extern ecc_init +#endif /* defined(CONFIG_DDR_ECC) */ .globl ext_bus_cntlr_init ext_bus_cntlr_init: +#if !defined(CFG_INIT_DCACHE_CS) #if !defined(CONFIG_NAND_U_BOOT) || defined(CONFIG_NAND_SPL) /* - * DDR2 setup + * DDR2 SDRAM Controller Setup */ - /* Following the DDR Core Manual, here is the initialization */ - - /* Step 1 */ - - /* Step 2 */ - - /* Step 3 */ - - /* base=00000000, size=256MByte (6), mode=7 (n*10*8) */ - mtsdram_as(SDRAM_MB0CF, 0x00006701); - - /* SET SDRAM_MB1CF - Not enabled */ - mtsdram_as(SDRAM_MB1CF, 0x00000000); - - /* SET SDRAM_MB2CF - Not enabled */ - mtsdram_as(SDRAM_MB2CF, 0x00000000); - - /* SET SDRAM_MB3CF - Not enabled */ - mtsdram_as(SDRAM_MB3CF, 0x00000000); - - /* SDRAM_CLKTR: Adv Addr clock by 180 deg */ - mtsdram_as(SDRAM_CLKTR, 0x80000000); - - /* Refresh Time register (0x30) Refresh every 7.8125uS */ - mtsdram_as(SDRAM_RTR, 0x06180000); + /* Set Memory Bank Configuration Registers */ + mtsdram_as(SDRAM_MB0CF, CFG_SDRAM0_MB0CF); + mtsdram_as(SDRAM_MB1CF, CFG_SDRAM0_MB1CF); + mtsdram_as(SDRAM_MB2CF, CFG_SDRAM0_MB2CF); + mtsdram_as(SDRAM_MB3CF, CFG_SDRAM0_MB3CF); + + /* Set Memory Clock Timing Register */ + mtsdram_as(SDRAM_CLKTR, CFG_SDRAM0_CLKTR); + + /* Set Refresh Time Register */ + mtsdram_as(SDRAM_RTR, CFG_SDRAM0_RTR); + + /* Set SDRAM Timing Registers */ + mtsdram_as(SDRAM_SDTR1, CFG_SDRAM0_SDTR1); + mtsdram_as(SDRAM_SDTR2, CFG_SDRAM0_SDTR2); + mtsdram_as(SDRAM_SDTR3, CFG_SDRAM0_SDTR3); + + /* Set Mode and Extended Mode Registers */ + mtsdram_as(SDRAM_MMODE, CFG_SDRAM0_MMODE); + mtsdram_as(SDRAM_MEMODE, CFG_SDRAM0_MEMODE); + + /* Set Memory Controller Options 1 Register */ + mtsdram_as(SDRAM_MCOPT1, CFG_SDRAM0_MCOPT1); + + /* Set Manual Initialization Control Registers */ + mtsdram_as(SDRAM_INITPLR0, CFG_SDRAM0_INITPLR0); + mtsdram_as(SDRAM_INITPLR1, CFG_SDRAM0_INITPLR1); + mtsdram_as(SDRAM_INITPLR2, CFG_SDRAM0_INITPLR2); + mtsdram_as(SDRAM_INITPLR3, CFG_SDRAM0_INITPLR3); + mtsdram_as(SDRAM_INITPLR4, CFG_SDRAM0_INITPLR4); + mtsdram_as(SDRAM_INITPLR5, CFG_SDRAM0_INITPLR5); + mtsdram_as(SDRAM_INITPLR6, CFG_SDRAM0_INITPLR6); + mtsdram_as(SDRAM_INITPLR7, CFG_SDRAM0_INITPLR7); + mtsdram_as(SDRAM_INITPLR8, CFG_SDRAM0_INITPLR8); + mtsdram_as(SDRAM_INITPLR9, CFG_SDRAM0_INITPLR9); + mtsdram_as(SDRAM_INITPLR10, CFG_SDRAM0_INITPLR10); + mtsdram_as(SDRAM_INITPLR11, CFG_SDRAM0_INITPLR11); + mtsdram_as(SDRAM_INITPLR12, CFG_SDRAM0_INITPLR12); + mtsdram_as(SDRAM_INITPLR13, CFG_SDRAM0_INITPLR13); + mtsdram_as(SDRAM_INITPLR14, CFG_SDRAM0_INITPLR14); + mtsdram_as(SDRAM_INITPLR15, CFG_SDRAM0_INITPLR15); + + /* Set On-Die Termination Registers */ + mtsdram_as(SDRAM_CODT, CFG_SDRAM0_CODT); + mtsdram_as(SDRAM_MODT0, CFG_SDRAM0_MODT0); + mtsdram_as(SDRAM_MODT1, CFG_SDRAM0_MODT1); + + /* Set Write Timing Register */ + mtsdram_as(SDRAM_WRDTR, CFG_SDRAM0_WRDTR); - /* SDRAM_SDTR1 */ - mtsdram_as(SDRAM_SDTR1, 0x80201000); - - /* SDRAM_SDTR2 */ - mtsdram_as(SDRAM_SDTR2, 0x32204232); + /* + * Start Initialization by SDRAM0_MCOPT2[SREN] = 0 and + * SDRAM0_MCOPT2[IPTR] = 1 + */ + mtsdram_as(SDRAM_MCOPT2, SDRAM_MCOPT2_SREN_EXIT | \ + SDRAM_MCOPT2_IPTR_EXECUTE); - /* SDRAM_SDTR3 */ - mtsdram_as(SDRAM_SDTR3, 0x080b0d1a); + /* + * Poll SDRAM0_MCSTAT[MIC] for assertion to indicate the + * completion of initialization. + * + * do { + * mfsdram(SDRAM_MCSTAT, val); + * } while ((val & SDRAM_MCSTAT_MIC_MASK) != SDRAM_MCSTAT_MIC_COMP); + */ + li r4,SDRAM_MCSTAT + lis r2,SDRAM_MCSTAT_MIC_COMP@h + ori r2,r2,SDRAM_MCSTAT_MIC_COMP@l +0: mtdcr memcfga,r4 + mfdcr r3,memcfgd + clrrwi r3,r3,31 + cmpw cr7,r3,r2 + bne+ cr7,0b + + /* Set Delay Control Registers */ + mtsdram_as(SDRAM_DLCR, CFG_SDRAM0_DLCR); + mtsdram_as(SDRAM_RDCC, CFG_SDRAM0_RDCC); + mtsdram_as(SDRAM_RQDC, CFG_SDRAM0_RQDC); + mtsdram_as(SDRAM_RFDC, CFG_SDRAM0_RFDC); - mtsdram_as(SDRAM_MMODE, 0x00000442); - mtsdram_as(SDRAM_MEMODE, 0x00000404); + /* + * Enable Controller by SDRAM0_MCOPT2[DCEN] = 1: + * + * mcopt2 = mfsdram(SDRAM_MCOPT2); + */ + li r4,SDRAM_MCOPT2 + mtdcr memcfga,r4 + mfdcr r3,memcfgd - /* SDRAM0_MCOPT1 (0X20) No ECC Gen */ - mtsdram_as(SDRAM_MCOPT1, 0x04322000); + /* + * mtsdram(SDRAM_MCOPT2, mcopt2 | SDRAM_MCOPT2_DCEN_ENABLE); + */ + mtdcr memcfga,r4 + oris r3,r3,SDRAM_MCOPT2_DCEN_ENABLE@h + ori r3,r3,SDRAM_MCOPT2_DCEN_ENABLE@l + mtdcr memcfgd,r3 - /* NOP */ - mtsdram_as(SDRAM_INITPLR0, 0xa8380000); - /* precharge 3 DDR clock cycle */ - mtsdram_as(SDRAM_INITPLR1, 0x81900400); - /* EMR2 twr = 2tck */ - mtsdram_as(SDRAM_INITPLR2, 0x81020000); - /* EMR3 twr = 2tck */ - mtsdram_as(SDRAM_INITPLR3, 0x81030000); - /* EMR DLL ENABLE twr = 2tck */ - mtsdram_as(SDRAM_INITPLR4, 0x81010404); - /* MR w/ DLL reset - * Note: 5 is CL. May need to be changed +#if defined(CONFIG_DDR_ECC) + /* + * ecc_init(CFG_SDRAM_BASE, CFG_MBYTES_SDRAM << 20); */ - mtsdram_as(SDRAM_INITPLR5, 0x81000542); - /* precharge 3 DDR clock cycle */ - mtsdram_as(SDRAM_INITPLR6, 0x81900400); - /* Auto-refresh trfc = 26tck */ - mtsdram_as(SDRAM_INITPLR7, 0x8D080000); - /* Auto-refresh trfc = 26tck */ - mtsdram_as(SDRAM_INITPLR8, 0x8D080000); - /* Auto-refresh */ - mtsdram_as(SDRAM_INITPLR9, 0x8D080000); - /* Auto-refresh */ - mtsdram_as(SDRAM_INITPLR10, 0x8D080000); - /* MRS - normal operation; wait 2 cycle (set wait to tMRD) */ - mtsdram_as(SDRAM_INITPLR11, 0x81000442); - mtsdram_as(SDRAM_INITPLR12, 0x81010780); - mtsdram_as(SDRAM_INITPLR13, 0x81010400); - mtsdram_as(SDRAM_INITPLR14, 0x00000000); - mtsdram_as(SDRAM_INITPLR15, 0x00000000); - - /* SET MCIF0_CODT Die Termination On */ - mtsdram_as(SDRAM_CODT, 0x0080f837); - mtsdram_as(SDRAM_MODT0, 0x01800000); - mtsdram_as(SDRAM_MODT1, 0x00000000); - - mtsdram_as(SDRAM_WRDTR, 0x00000000); - - /* SDRAM0_MCOPT2 (0X21) Start initialization */ - mtsdram_as(SDRAM_MCOPT2, 0x20000000); - - /* Step 5 */ - lis r3,0x1 /* 400000 = wait 100ms */ - mtctr r3 - -pll_wait: - bdnz pll_wait - - /* Step 6 */ - - /* SDRAM_DLCR */ - mtsdram_as(SDRAM_DLCR, 0x030000a5); - - /* SDRAM_RDCC */ - mtsdram_as(SDRAM_RDCC, 0x40000000); - - /* SDRAM_RQDC */ - mtsdram_as(SDRAM_RQDC, 0x80000038); - - /* SDRAM_RFDC */ - mtsdram_as(SDRAM_RFDC, 0x00000209); - - /* Enable memory controller */ - mtsdram_as(SDRAM_MCOPT2, 0x28000000); -#endif /* #ifndef CONFIG_NAND_U_BOOT */ + mflr r13 + lis r3,CFG_SDRAM_BASE@h + ori r3,r3,CFG_SDRAM_BASE@l + lis r4,(CFG_MBYTES_SDRAM << 20)@h + ori r4,r4,(CFG_MBYTES_SDRAM << 20)@l + bl ecc_init + mtlr r13 +#endif /* defined(CONFIG_DDR_ECC) */ +#endif /* !defined(CONFIG_NAND_U_BOOT) || defined(CONFIG_NAND_SPL) */ +#endif /* !defined(CFG_INIT_DCACHE_CS) */ blr diff --git a/board/amcc/kilauea/memory.c b/board/amcc/kilauea/memory.c index 1d7a3fa..b7e2344 100644 --- a/board/amcc/kilauea/memory.c +++ b/board/amcc/kilauea/memory.c @@ -1,4 +1,7 @@ /* + * Copyright (c) 2008 Nuovation System Designs, LLC + * Grant Erickson <gerickson@nuovations.com> + * * (C) Copyright 2007 * Stefan Roese, DENX Software Engineering, sr@denx.de. * @@ -30,10 +33,12 @@ void sdram_init(void) return; } +#if defined(CONFIG_NAND_U_BOOT) long int initdram(int board_type) { return (CFG_MBYTES_SDRAM << 20); } +#endif /* defined(CONFIG_NAND_U_BOOT) */ #if defined(CFG_DRAM_TEST) int testdram (void) diff --git a/board/amcc/makalu/Makefile b/board/amcc/makalu/Makefile index 39328c2..4def0d4 100644 --- a/board/amcc/makalu/Makefile +++ b/board/amcc/makalu/Makefile @@ -25,7 +25,7 @@ include $(TOPDIR)/config.mk LIB = $(obj)lib$(BOARD).a -COBJS = $(BOARD).o cmd_pll.o memory.o +COBJS = $(BOARD).o cmd_pll.o SOBJS = init.o SRCS := $(SOBJS:.o=.S) $(COBJS:.o=.c) diff --git a/board/amcc/makalu/init.S b/board/amcc/makalu/init.S index 11c5b19..4d0f460 100644 --- a/board/amcc/makalu/init.S +++ b/board/amcc/makalu/init.S @@ -1,8 +1,11 @@ /* + * Copyright (c) 2008 Nuovation System Designs, LLC + * Grant Erickson <gerickson@nuovations.com> + * * (C) Copyright 2007-2008 * Stefan Roese, DENX Software Engineering, sr@denx.de. * - * Based on code provided from Senao and AMCC + * Originally based on code provided from Senao and AMCC * * See file CREDITS for list of people who contributed to this * project. @@ -23,126 +26,6 @@ * MA 02111-1307 USA */ -#include <config.h> -#include <ppc4xx.h> - -#include <ppc_asm.tmpl> -#include <ppc_defs.h> - -#define mtsdram_as(reg, value) \ - addi r4,0,reg ; \ - mtdcr memcfga,r4 ; \ - addis r4,0,value@h ; \ - ori r4,r4,value@l ; \ - mtdcr memcfgd,r4 ; - .globl ext_bus_cntlr_init ext_bus_cntlr_init: - - /* - * DDR2 setup - */ - - /* Following the DDR Core Manual, here is the initialization */ - - /* Step 1 */ - - /* Step 2 */ - - /* Step 3 */ - - /* base=00000000, size=128MByte (5), mode=2 (n*10*4) */ - mtsdram_as(SDRAM_MB0CF, 0x00005201); - - /* base=08000000, size=128MByte (5), mode=2 (n*10*4) */ - mtsdram_as(SDRAM_MB1CF, (0x08000000 >> 3) | 0x5201); - - /* SDRAM_CLKTR: Adv Addr clock by 180 deg */ - mtsdram_as(SDRAM_CLKTR,0x80000000); - - /* Refresh Time register (0x30) Refresh every 7.8125uS */ - mtsdram_as(SDRAM_RTR, 0x06180000); - - /* SDRAM_SDTR1 */ - mtsdram_as(SDRAM_SDTR1, 0x80201000); - - /* SDRAM_SDTR2 */ - mtsdram_as(SDRAM_SDTR2, 0x32204232); - - /* SDRAM_SDTR3 */ - mtsdram_as(SDRAM_SDTR3, 0x080b0d1a); - - mtsdram_as(SDRAM_MMODE, 0x00000442); - mtsdram_as(SDRAM_MEMODE, 0x00000404); - - /* SDRAM0_MCOPT1 (0X20) No ECC Gen */ - mtsdram_as(SDRAM_MCOPT1, 0x04322000); - - /* NOP */ - mtsdram_as(SDRAM_INITPLR0, 0xa8380000); - /* precharge 3 DDR clock cycle */ - mtsdram_as(SDRAM_INITPLR1, 0x81900400); - /* EMR2 twr = 2tck */ - mtsdram_as(SDRAM_INITPLR2, 0x81020000); - /* EMR3 twr = 2tck */ - mtsdram_as(SDRAM_INITPLR3, 0x81030000); - /* EMR DLL ENABLE twr = 2tck */ - mtsdram_as(SDRAM_INITPLR4, 0x81010404); - /* MR w/ DLL reset - * Note: 5 is CL. May need to be changed - */ - mtsdram_as(SDRAM_INITPLR5, 0x81000542); - /* precharge 3 DDR clock cycle */ - mtsdram_as(SDRAM_INITPLR6, 0x81900400); - /* Auto-refresh trfc = 26tck */ - mtsdram_as(SDRAM_INITPLR7, 0x8D080000); - /* Auto-refresh trfc = 26tck */ - mtsdram_as(SDRAM_INITPLR8, 0x8D080000); - /* Auto-refresh */ - mtsdram_as(SDRAM_INITPLR9, 0x8D080000); - /* Auto-refresh */ - mtsdram_as(SDRAM_INITPLR10, 0x8D080000); - /* MRS - normal operation; wait 2 cycle (set wait to tMRD) */ - mtsdram_as(SDRAM_INITPLR11, 0x81000442); - mtsdram_as(SDRAM_INITPLR12, 0x81010780); - mtsdram_as(SDRAM_INITPLR13, 0x81010400); - mtsdram_as(SDRAM_INITPLR14, 0x00000000); - mtsdram_as(SDRAM_INITPLR15, 0x00000000); - - /* SET MCIF0_CODT Die Termination On */ - mtsdram_as(SDRAM_CODT, 0x0080f837); - mtsdram_as(SDRAM_MODT0, 0x01800000); -#if 0 /* test-only: not sure if 0 is ok when 2nd bank is used */ - mtsdram_as(SDRAM_MODT1, 0x00000000); -#endif - - mtsdram_as(SDRAM_WRDTR, 0x00000000); - - /* SDRAM0_MCOPT2 (0X21) Start initialization */ - mtsdram_as(SDRAM_MCOPT2, 0x20000000); - - /* Step 5 */ - lis r3,0x1 /* 400000 = wait 100ms */ - mtctr r3 - -pll_wait: - bdnz pll_wait - - /* Step 6 */ - - /* SDRAM_DLCR */ - mtsdram_as(SDRAM_DLCR, 0x030000a5); - - /* SDRAM_RDCC */ - mtsdram_as(SDRAM_RDCC, 0x40000000); - - /* SDRAM_RQDC */ - mtsdram_as(SDRAM_RQDC, 0x80000038); - - /* SDRAM_RFDC */ - mtsdram_as(SDRAM_RFDC, 0x00000209); - - /* Enable memory controller */ - mtsdram_as(SDRAM_MCOPT2, 0x28000000); - blr diff --git a/board/amcc/makalu/makalu.c b/board/amcc/makalu/makalu.c index 9baec9a..adf604f 100644 --- a/board/amcc/makalu/makalu.c +++ b/board/amcc/makalu/makalu.c @@ -351,3 +351,8 @@ void ft_board_setup(void *blob, bd_t *bd) fdt_strerror(rc)); } #endif /* defined(CONFIG_OF_LIBFDT) && defined(CONFIG_OF_BOARD_SETUP) */ + +void sdram_init(void) +{ + return; +} diff --git a/board/amcc/makalu/memory.c b/board/amcc/makalu/memory.c deleted file mode 100644 index b03b60b..0000000 --- a/board/amcc/makalu/memory.c +++ /dev/null @@ -1,188 +0,0 @@ -/* - * (C) Copyright 2007 - * Stefan Roese, DENX Software Engineering, sr@denx.de. - * - * See file CREDITS for list of people who contributed to this - * project. - * - * 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 <asm/processor.h> - -void sdram_init(void) -{ - return; -} - -long int initdram(int board_type) -{ - /* - * Same as on Kilauea, Makalu generates exception 0x200 - * (machine check) after trap_init() in board_init_f, - * when SDRAM is initialized here (late) and d-cache is - * used earlier as INIT_RAM. - * So for now, initialize DDR2 in init.S very early and - * also use it for INIT_RAM. Then this exception doesn't - * occur. - */ -#if 0 - u32 val; - - /* base=00000000, size=128MByte (5), mode=2 (n*10*4) */ - mtsdram(SDRAM_MB0CF, 0x00005201); - - /* SET SDRAM_MB1CF - Not enabled */ - mtsdram(SDRAM_MB1CF, 0x00000000); - - /* SET SDRAM_MB2CF - Not enabled */ - mtsdram(SDRAM_MB2CF, 0x00000000); - - /* SET SDRAM_MB3CF - Not enabled */ - mtsdram(SDRAM_MB3CF, 0x00000000); - - /* SDRAM_CLKTR: Adv Addr clock by 90 deg */ - mtsdram(SDRAM_CLKTR, 0x80000000); - - /* Refresh Time register (0x30) Refresh every 7.8125uS */ - mtsdram(SDRAM_RTR, 0x06180000); - - /* SDRAM_SDTR1 */ - mtsdram(SDRAM_SDTR1, 0x80201000); - - /* SDRAM_SDTR2 */ - mtsdram(SDRAM_SDTR2, 0x32204232); - - /* SDRAM_SDTR3 */ - mtsdram(SDRAM_SDTR3, 0x080b0d1a); - - mtsdram(SDRAM_MMODE, 0x00000442); - mtsdram(SDRAM_MEMODE, 0x00000404); - - /* SDRAM0_MCOPT1 (0X20) No ECC Gen */ - mtsdram(SDRAM_MCOPT1, 0x04322000); - - /* NOP */ - mtsdram(SDRAM_INITPLR0, 0xa8380000); - /* precharge 3 DDR clock cycle */ - mtsdram(SDRAM_INITPLR1, 0x81900400); - /* EMR2 twr = 2tck */ - mtsdram(SDRAM_INITPLR2, 0x81020000); - /* EMR3 twr = 2tck */ - mtsdram(SDRAM_INITPLR3, 0x81030000); - /* EMR DLL ENABLE twr = 2tck */ - mtsdram(SDRAM_INITPLR4, 0x81010404); - /* MR w/ DLL reset - * Note: 5 is CL. May need to be changed - */ - mtsdram(SDRAM_INITPLR5, 0x81000542); - /* precharge 3 DDR clock cycle */ - mtsdram(SDRAM_INITPLR6, 0x81900400); - /* Auto-refresh trfc = 26tck */ - mtsdram(SDRAM_INITPLR7, 0x8D080000); - /* Auto-refresh trfc = 26tck */ - mtsdram(SDRAM_INITPLR8, 0x8D080000); - /* Auto-refresh */ - mtsdram(SDRAM_INITPLR9, 0x8D080000); - /* Auto-refresh */ - mtsdram(SDRAM_INITPLR10, 0x8D080000); - /* MRS - normal operation; wait 2 cycle (set wait to tMRD) */ - mtsdram(SDRAM_INITPLR11, 0x81000442); - mtsdram(SDRAM_INITPLR12, 0x81010780); - mtsdram(SDRAM_INITPLR13, 0x81010400); - mtsdram(SDRAM_INITPLR14, 0x00000000); - mtsdram(SDRAM_INITPLR15, 0x00000000); - - /* SET MCIF0_CODT Die Termination On */ - mtsdram(SDRAM_CODT, 0x0080f837); - mtsdram(SDRAM_MODT0, 0x01800000); - mtsdram(SDRAM_MODT1, 0x00000000); - - mtsdram(SDRAM_WRDTR, 0x00000000); - - /* SDRAM0_MCOPT2 (0X21) Start initialization */ - mtsdram(SDRAM_MCOPT2, 0x20000000); - - /* Step 5 */ - do { - mfsdram(SDRAM_MCSTAT, val); - } while ((val & SDRAM_MCSTAT_MIC_COMP) != SDRAM_MCSTAT_MIC_COMP); - - /* Step 6 */ - - /* SDRAM_DLCR */ - mtsdram(SDRAM_DLCR, 0x030000a5); - - /* SDRAM_RDCC */ - mtsdram(SDRAM_RDCC, 0x40000000); - - /* SDRAM_RQDC */ - mtsdram(SDRAM_RQDC, 0x80000038); - - /* SDRAM_RFDC */ - mtsdram(SDRAM_RFDC, 0x00000209); - - /* Enable memory controller */ - mfsdram(SDRAM_MCOPT2, val); - val |= SDRAM_MCOPT2_DCEN_ENABLE; - mtsdram(SDRAM_MCOPT2, val); -#endif - return (CFG_MBYTES_SDRAM << 20); -} - -#if defined(CFG_DRAM_TEST) -int testdram (void) -{ - printf ("testdram\n"); -#if defined (CONFIG_NAND_U_BOOT) - return 0; -#endif - uint *pstart = (uint *) 0x00000000; - uint *pend = (uint *) 0x00001000; - uint *p; - - for (p = pstart; p < pend; p++) { - *p = 0xaaaaaaaa; - } - - for (p = pstart; p < pend; p++) { - if (*p != 0xaaaaaaaa) { -#if !defined (CONFIG_NAND_SPL) - printf ("SDRAM test fails at: %08x\n", (uint) p); -#endif - return 1; - } - } - - for (p = pstart; p < pend; p++) { - *p = 0x55555555; - } - - for (p = pstart; p < pend; p++) { - if (*p != 0x55555555) { -#if !defined (CONFIG_NAND_SPL) - printf ("SDRAM test fails at: %08x\n", (uint) p); -#endif - return 1; - } - } -#if !defined (CONFIG_NAND_SPL) - printf ("SDRAM test passed!!!\n"); -#endif - return 0; -} -#endif |