diff options
Diffstat (limited to 'board/amcc/makalu/init.S')
| -rw-r--r-- | board/amcc/makalu/init.S | 125 |
1 files changed, 4 insertions, 121 deletions
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 |