board/amcc/makalu/init.S: board/amcc/makalu/memory.c: include/configs/makalu.h:
Makalu now uses the data cache for its primordial stack and data area and leverages the common, shared parameter-based SDRAM initialization code.
include/ppc405.h:
Redefined SDRAM configuration size mnemonics on PPC_REG_VAL macro and added self-documenting mnemonics to remove any ambiuity about the units associated with the mnemonic.
Signed-off-by: Grant Erickson gerickson@nuovations.com --- include/ppc405.h | 52 ++++++++++++++++++++++++++++++++++---------- board/amcc/makalu/init.S | 127 ++------------------------------------------ board/amcc/makalu/memory.c | 122 ++---------------------------------------- include/configs/makalu.h | 117 ++++++++++++++++++++++++++++++++++++++-- 4 files changed, 158 insertions(+), 260 deletions(-)
diff --git a/include/ppc405.h b/include/ppc405.h index d02eb71..f8eeeae 100644 --- a/include/ppc405.h +++ b/include/ppc405.h @@ -1339,21 +1339,45 @@ #define SDRAM_ECCCR 0x98 /* ECC error status */ #define SDRAM_RID 0xF8 /* revision ID */
-/*-----------------------------------------------------------------------------+ +/*----------------------------------------------------------------------------+ | Memory Bank 0-7 configuration -+-----------------------------------------------------------------------------*/ -#define SDRAM_RXBAS_SDSZ_4 0x00000000 /* 4M */ -#define SDRAM_RXBAS_SDSZ_8 0x00001000 /* 8M */ -#define SDRAM_RXBAS_SDSZ_16 0x00002000 /* 16M */ -#define SDRAM_RXBAS_SDSZ_32 0x00003000 /* 32M */ -#define SDRAM_RXBAS_SDSZ_64 0x00004000 /* 64M */ -#define SDRAM_RXBAS_SDSZ_128 0x00005000 /* 128M */ -#define SDRAM_RXBAS_SDSZ_256 0x00006000 /* 256M */ -#define SDRAM_RXBAS_SDSZ_512 0x00007000 /* 512M */ -#define SDRAM_RXBAS_SDSZ_1024 0x00008000 /* 1024M */ -#define SDRAM_RXBAS_SDSZ_2048 0x00009000 /* 2048M */ -#define SDRAM_RXBAS_SDSZ_4096 0x0000a000 /* 4096M */ -#define SDRAM_RXBAS_SDSZ_8192 0x0000b000 /* 8192M */ ++----------------------------------------------------------------------------*/ +#define SDRAM_RXBAS_SDSZ_MASK PPC_REG_VAL(19, 0xF) +#define SDRAM_RXBAS_SDSZ_4MB PPC_REG_VAL(19, 0x0) +#define SDRAM_RXBAS_SDSZ_8MB PPC_REG_VAL(19, 0x1) +#define SDRAM_RXBAS_SDSZ_16MB PPC_REG_VAL(19, 0x2) +#define SDRAM_RXBAS_SDSZ_32MB PPC_REG_VAL(19, 0x3) +#define SDRAM_RXBAS_SDSZ_64MB PPC_REG_VAL(19, 0x4) +#define SDRAM_RXBAS_SDSZ_128MB PPC_REG_VAL(19, 0x5) +#define SDRAM_RXBAS_SDSZ_256MB PPC_REG_VAL(19, 0x6) +#define SDRAM_RXBAS_SDSZ_512MB PPC_REG_VAL(19, 0x7) +#define SDRAM_RXBAS_SDSZ_1024MB PPC_REG_VAL(19, 0x8) +#define SDRAM_RXBAS_SDSZ_2048MB PPC_REG_VAL(19, 0x9) +#define SDRAM_RXBAS_SDSZ_4096MB PPC_REG_VAL(19, 0xA) +#define SDRAM_RXBAS_SDSZ_8192MB PPC_REG_VAL(19, 0xB) +#define SDRAM_RXBAS_SDSZ_8 SDRAM_RXBAS_SDSZ_8MB +#define SDRAM_RXBAS_SDSZ_16 SDRAM_RXBAS_SDSZ_16MB +#define SDRAM_RXBAS_SDSZ_32 SDRAM_RXBAS_SDSZ_32MB +#define SDRAM_RXBAS_SDSZ_64 SDRAM_RXBAS_SDSZ_64MB +#define SDRAM_RXBAS_SDSZ_128 SDRAM_RXBAS_SDSZ_128MB +#define SDRAM_RXBAS_SDSZ_256 SDRAM_RXBAS_SDSZ_256MB +#define SDRAM_RXBAS_SDSZ_512 SDRAM_RXBAS_SDSZ_512MB +#define SDRAM_RXBAS_SDSZ_1024 SDRAM_RXBAS_SDSZ_1024MB +#define SDRAM_RXBAS_SDSZ_2048 SDRAM_RXBAS_SDSZ_2048MB +#define SDRAM_RXBAS_SDSZ_4096 SDRAM_RXBAS_SDSZ_4096MB +#define SDRAM_RXBAS_SDSZ_8192 SDRAM_RXBAS_SDSZ_8192MB +#define SDRAM_RXBAS_SDAM_MODE0 PPC_REG_VAL(23, 0x0) +#define SDRAM_RXBAS_SDAM_MODE1 PPC_REG_VAL(23, 0x1) +#define SDRAM_RXBAS_SDAM_MODE2 PPC_REG_VAL(23, 0x2) +#define SDRAM_RXBAS_SDAM_MODE3 PPC_REG_VAL(23, 0x3) +#define SDRAM_RXBAS_SDAM_MODE4 PPC_REG_VAL(23, 0x4) +#define SDRAM_RXBAS_SDAM_MODE5 PPC_REG_VAL(23, 0x5) +#define SDRAM_RXBAS_SDAM_MODE6 PPC_REG_VAL(23, 0x6) +#define SDRAM_RXBAS_SDAM_MODE7 PPC_REG_VAL(23, 0x7) +#define SDRAM_RXBAS_SDAM_MODE8 PPC_REG_VAL(23, 0x8) +#define SDRAM_RXBAS_SDAM_MODE9 PPC_REG_VAL(23, 0x9) +#define SDRAM_RXBAS_SDBE_DISABLE PPC_REG_VAL(31, 0x0) +#define SDRAM_RXBAS_SDBE_ENABLE PPC_REG_VAL(31, 0x1)
/*-----------------------------------------------------------------------------+ | Memory Controller Status diff --git a/board/amcc/makalu/init.S b/board/amcc/makalu/init.S index 5e9a5e0..d74d93b 100644 --- a/board/amcc/makalu/init.S +++ b/board/amcc/makalu/init.S @@ -1,8 +1,9 @@ /* - * (C) Copyright 2007-2008 - * Stefan Roese, DENX Software Engineering, sr@denx.de. + * Copyright (c) 2008 Nuovation System Designs, LLC + * Grant Erickson gerickson@nuovations.com * - * Based on code provided from Senao and AMCC + * Copyright (c) 2007-2008 DENX Software Engineering, GmbH + * Stefan Roese sr@denx.de * * See file CREDITS for list of people who contributed to this * project. @@ -23,126 +24,6 @@ * 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/memory.c b/board/amcc/makalu/memory.c index b03b60b..03c64fa 100644 --- a/board/amcc/makalu/memory.c +++ b/board/amcc/makalu/memory.c @@ -1,6 +1,9 @@ /* - * (C) Copyright 2007 - * Stefan Roese, DENX Software Engineering, sr@denx.de. + * Copyright (c) 2008 Nuovation System Designs, LLC + * Grant Erickson gerickson@nuovations.com + * + * Copyright (c) 2007 DENX Software Engineering, GmbH + * Stefan Roese sr@denx.de * * See file CREDITS for list of people who contributed to this * project. @@ -29,121 +32,6 @@ 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) { diff --git a/include/configs/makalu.h b/include/configs/makalu.h index 67243d4..7465473 100644 --- a/include/configs/makalu.h +++ b/include/configs/makalu.h @@ -1,6 +1,9 @@ /* - * (C) Copyright 2007-2008 - * Stefan Roese, DENX Software Engineering, sr@denx.de. + * Copyright (c) 2008 Nuovation System Designs, LLC + * Grant Erickson gerickson@nuovations.com + * + * Copyright (c) 2007-2008 DENX Software Engineering, GmbH + * Stefan Roese sr@denx.de * * See file CREDITS for list of people who contributed to this * project. @@ -52,10 +55,64 @@ #define CFG_MONITOR_BASE (TEXT_BASE)
/*----------------------------------------------------------------------- - * Initial RAM & stack pointer - *----------------------------------------------------------------------*/ -#define CFG_INIT_RAM_ADDR 0x02000000 /* inside of SDRAM */ -#define CFG_INIT_RAM_END (4 << 10) + * Initial RAM & Stack Pointer Configuration Options + * + * There are traditionally three options for the primordial + * (i.e. initial) stack usage on the 405-series: + * + * 1) On-chip Memory (OCM) (i.e. SRAM) + * 2) Data cache + * 3) SDRAM + * + * For the 405EX(r), there is no OCM, so we are left with (2) or (3) + * the latter of which is less than desireable since it requires + * setting up the SDRAM and ECC in assembly code which is always + * tedious. Regardless of the method chosen, the configuration ends + * up being: + * + * CFG_INIT_RAM_END --> .---------------------. Higher Address + * (Offset Only) | | + * | | + * | CFG_GBL_DATA_SIZE | + * | | + * | | + * CFG_GBL_DATA_OFFSET --> |---------------------| -. + * | POST Status | | + * CFG_POST_WORD_ADDR --> |---------------------| | + * | | |- CFG_INIT_EXTRA_SIZE + * | | | + * | | | + * CFG_INIT_SP_OFFSET --> |---------------------| -' + * | | | | + * | | | | + * | | | | + * | V Stack V | + * | | + * . . . + * . . . + * . . . + * | | + * | | + * | | + * CFG_INIT_RAM_ADDR --> '---------------------' Lower Address + * + * To use (2), define 'CFG_INIT_DCACHE_CS' to be an unused chip + * select on the External Bus Controller (EBC) and then select a + * value for 'CFG_INIT_RAM_ADDR' outside of the range of valid, + * physical SDRAM. Otherwise, undefine 'CFG_INIT_DCACHE_CS' and + * select a value for 'CFG_INIT_RAM_ADDR' within the range of valid, + * physical SDRAM to use (3). + *-----------------------------------------------------------------------*/ + +#define CFG_INIT_DCACHE_CS 4 + +#if defined(CFG_INIT_DCACHE_CS) +#define CFG_INIT_RAM_ADDR (CFG_SDRAM_BASE + ( 1 << 30)) /* 1 GiB */ +#else +#define CFG_INIT_RAM_ADDR (CFG_SDRAM_BASE + (32 << 20)) /* 32 MiB */ +#endif /* defined(CFG_INIT_DCACHE_CS) */ + +#define CFG_INIT_RAM_END (4 << 10) /* 4 KiB */ #define CFG_GBL_DATA_SIZE 256 /* num bytes initial data */ #define CFG_GBL_DATA_OFFSET (CFG_INIT_RAM_END - CFG_GBL_DATA_SIZE) /* reserve some memory for POST and BOOT limit info */ @@ -115,6 +172,54 @@ *----------------------------------------------------------------------*/ #define CFG_MBYTES_SDRAM 256
+#define CFG_SDRAM0_MB0CF_BASE (( 0 << 20) + CFG_SDRAM_BASE) +#define CFG_SDRAM0_MB1CF_BASE ((128 << 20) + CFG_SDRAM_BASE) + +/* DDR1/2 SDRAM Device Control Register Data Values */ +#define CFG_SDRAM0_MB0CF ((CFG_SDRAM0_MB0CF_BASE >> 3) | \ + SDRAM_RXBAS_SDSZ_128MB | \ + SDRAM_RXBAS_SDAM_MODE2 | \ + SDRAM_RXBAS_SDBE_ENABLE) +#define CFG_SDRAM0_MB1CF ((CFG_SDRAM0_MB1CF_BASE >> 3) | \ + SDRAM_RXBAS_SDSZ_128MB | \ + SDRAM_RXBAS_SDAM_MODE2 | \ + SDRAM_RXBAS_SDBE_ENABLE) +#define CFG_SDRAM0_MB2CF SDRAM_RXBAS_SDBE_DISABLE +#define CFG_SDRAM0_MB3CF SDRAM_RXBAS_SDBE_DISABLE +#define CFG_SDRAM0_MCOPT1 0x04322000 +#define CFG_SDRAM0_MCOPT2 0x00000000 +#define CFG_SDRAM0_MODT0 0x01800000 +#define CFG_SDRAM0_MODT1 0x00000000 +#define CFG_SDRAM0_CODT 0x0080f837 +#define CFG_SDRAM0_RTR 0x06180000 +#define CFG_SDRAM0_INITPLR0 0xa8380000 +#define CFG_SDRAM0_INITPLR1 0x81900400 +#define CFG_SDRAM0_INITPLR2 0x81020000 +#define CFG_SDRAM0_INITPLR3 0x81030000 +#define CFG_SDRAM0_INITPLR4 0x81010404 +#define CFG_SDRAM0_INITPLR5 0x81000542 +#define CFG_SDRAM0_INITPLR6 0x81900400 +#define CFG_SDRAM0_INITPLR7 0x8D080000 +#define CFG_SDRAM0_INITPLR8 0x8D080000 +#define CFG_SDRAM0_INITPLR9 0x8D080000 +#define CFG_SDRAM0_INITPLR10 0x8D080000 +#define CFG_SDRAM0_INITPLR11 0x81000442 +#define CFG_SDRAM0_INITPLR12 0x81010780 +#define CFG_SDRAM0_INITPLR13 0x81010400 +#define CFG_SDRAM0_INITPLR14 0x00000000 +#define CFG_SDRAM0_INITPLR15 0x00000000 +#define CFG_SDRAM0_RQDC 0x80000038 +#define CFG_SDRAM0_RFDC 0x00000209 +#define CFG_SDRAM0_RDCC 0x40000000 +#define CFG_SDRAM0_DLCR 0x030000a5 +#define CFG_SDRAM0_CLKTR 0x80000000 +#define CFG_SDRAM0_WRDTR 0x00000000 +#define CFG_SDRAM0_SDTR1 0x80201000 +#define CFG_SDRAM0_SDTR2 0x32204232 +#define CFG_SDRAM0_SDTR3 0x080b0d1a +#define CFG_SDRAM0_MMODE 0x00000442 +#define CFG_SDRAM0_MEMODE 0x00000404 + /*----------------------------------------------------------------------- * I2C *----------------------------------------------------------------------*/