mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-27 15:12:21 +00:00
9973e3c614
This patch changes the return type of initdram() from long int to phys_size_t. This is required for a couple of reasons: long int limits the amount of dram to 2GB, and u-boot in general is moving over to phys_size_t to represent the size of physical memory. phys_size_t is defined as an unsigned long on almost all current platforms. This patch *only* changes the return type of the initdram function (in include/common.h, as well as in each board's implementation of initdram). It does not actually modify the code inside the function on any of the platforms; platforms which wish to support more than 2GB of DRAM will need to modify their initdram() function code. Build tested with MAKEALL for ppc, arm, mips, mips-el. Booted on powerpc MPC8641HPCN. Signed-off-by: Becky Bruce <becky.bruce@freescale.com>
245 lines
6.3 KiB
C
245 lines
6.3 KiB
C
/*
|
|
* (C) Copyright 2002,2003, Motorola Inc.
|
|
* Xianghua Xiao, (X.Xiao@motorola.com)
|
|
*
|
|
* (C) Copyright 2002 Scott McNutt <smcnutt@artesyncp.com>
|
|
*
|
|
* 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>
|
|
#include <asm/immap_85xx.h>
|
|
#include <spd_sdram.h>
|
|
|
|
long int fixed_sdram (void);
|
|
|
|
int board_pre_init (void)
|
|
{
|
|
#if defined(CONFIG_PCI)
|
|
volatile ccsr_pcix_t *pci = (void *)(CFG_MPC85xx_PCIX_ADDR);
|
|
|
|
pci->peer &= 0xffffffdf; /* disable master abort */
|
|
#endif
|
|
return 0;
|
|
}
|
|
|
|
int checkboard (void)
|
|
{
|
|
sys_info_t sysinfo;
|
|
|
|
get_sys_info (&sysinfo);
|
|
|
|
printf ("Board: Freescale MPC8540EVAL Board\n");
|
|
printf ("\tCPU: %lu MHz\n", sysinfo.freqProcessor / 1000000);
|
|
printf ("\tCCB: %lu MHz\n", sysinfo.freqSystemBus / 1000000);
|
|
printf ("\tDDR: %lu MHz\n", sysinfo.freqSystemBus / 2000000);
|
|
if((CFG_LBC_LCRR & 0x0f) == 2 || (CFG_LBC_LCRR & 0x0f) == 4 \
|
|
|| (CFG_LBC_LCRR & 0x0f) == 8) {
|
|
printf ("\tLBC: %lu MHz\n",
|
|
sysinfo.freqSystemBus / 1000000/(CFG_LBC_LCRR & 0x0f));
|
|
} else {
|
|
printf("\tLBC: unknown\n");
|
|
}
|
|
printf("L1 D-cache 32KB, L1 I-cache 32KB enabled.\n");
|
|
return (0);
|
|
}
|
|
|
|
phys_size_t initdram (int board_type)
|
|
{
|
|
long dram_size = 0;
|
|
|
|
#if !defined(CONFIG_RAM_AS_FLASH)
|
|
volatile ccsr_lbc_t *lbc = (void *)(CFG_MPC85xx_LBC_ADDR);
|
|
sys_info_t sysinfo;
|
|
uint temp_lbcdll = 0;
|
|
#endif
|
|
#if !defined(CONFIG_RAM_AS_FLASH) || defined(CONFIG_DDR_DLL)
|
|
volatile ccsr_gur_t *gur = (void *)(CFG_MPC85xx_GUTS_ADDR);
|
|
#endif
|
|
|
|
#if defined(CONFIG_DDR_DLL)
|
|
uint temp_ddrdll = 0;
|
|
|
|
/* Work around to stabilize DDR DLL */
|
|
temp_ddrdll = gur->ddrdllcr;
|
|
gur->ddrdllcr = ((temp_ddrdll & 0xff) << 16) | 0x80000000;
|
|
asm("sync;isync;msync");
|
|
#endif
|
|
|
|
#if defined(CONFIG_SPD_EEPROM)
|
|
dram_size = spd_sdram ();
|
|
#else
|
|
dram_size = fixed_sdram ();
|
|
#endif
|
|
|
|
#if defined(CFG_RAMBOOT)
|
|
return dram_size;
|
|
#endif
|
|
|
|
#if !defined(CONFIG_RAM_AS_FLASH) /* LocalBus is not emulating flash */
|
|
get_sys_info(&sysinfo);
|
|
/* if localbus freq is less than 66Mhz,we use bypass mode,otherwise use DLL */
|
|
if(sysinfo.freqSystemBus/(CFG_LBC_LCRR & 0x0f) < 66000000) {
|
|
lbc->lcrr = (CFG_LBC_LCRR & 0x0fffffff)| 0x80000000;
|
|
} else {
|
|
lbc->lcrr = CFG_LBC_LCRR & 0x7fffffff;
|
|
udelay(200);
|
|
temp_lbcdll = gur->lbcdllcr;
|
|
gur->lbcdllcr = ((temp_lbcdll & 0xff) << 16 ) | 0x80000000;
|
|
asm("sync;isync;msync");
|
|
}
|
|
lbc->or2 = CFG_OR2_PRELIM; /* 64MB SDRAM */
|
|
lbc->br2 = CFG_BR2_PRELIM;
|
|
lbc->lbcr = CFG_LBC_LBCR;
|
|
lbc->lsdmr = CFG_LBC_LSDMR_1;
|
|
asm("sync");
|
|
* (ulong *)0 = 0x000000ff;
|
|
lbc->lsdmr = CFG_LBC_LSDMR_2;
|
|
asm("sync");
|
|
* (ulong *)0 = 0x000000ff;
|
|
lbc->lsdmr = CFG_LBC_LSDMR_3;
|
|
asm("sync");
|
|
* (ulong *)0 = 0x000000ff;
|
|
lbc->lsdmr = CFG_LBC_LSDMR_4;
|
|
asm("sync");
|
|
* (ulong *)0 = 0x000000ff;
|
|
lbc->lsdmr = CFG_LBC_LSDMR_5;
|
|
asm("sync");
|
|
lbc->lsrt = CFG_LBC_LSRT;
|
|
asm("sync");
|
|
lbc->mrtpr = CFG_LBC_MRTPR;
|
|
asm("sync");
|
|
#endif
|
|
|
|
#if defined(CONFIG_DDR_ECC)
|
|
{
|
|
/* Initialize all of memory for ECC, then
|
|
* enable errors */
|
|
uint *p = 0;
|
|
uint i = 0;
|
|
volatile ccsr_ddr_t *ddr= (void *)(CFG_MPC85xx_DDR_ADDR);
|
|
dma_init();
|
|
for (*p = 0; p < (uint *)(8 * 1024); p++) {
|
|
if (((unsigned int)p & 0x1f) == 0) { dcbz(p); }
|
|
*p = (unsigned int)0xdeadbeef;
|
|
if (((unsigned int)p & 0x1c) == 0x1c) { dcbf(p); }
|
|
}
|
|
|
|
/* 8K */
|
|
dma_xfer((uint *)0x2000,0x2000,(uint *)0);
|
|
/* 16K */
|
|
dma_xfer((uint *)0x4000,0x4000,(uint *)0);
|
|
/* 32K */
|
|
dma_xfer((uint *)0x8000,0x8000,(uint *)0);
|
|
/* 64K */
|
|
dma_xfer((uint *)0x10000,0x10000,(uint *)0);
|
|
/* 128k */
|
|
dma_xfer((uint *)0x20000,0x20000,(uint *)0);
|
|
/* 256k */
|
|
dma_xfer((uint *)0x40000,0x40000,(uint *)0);
|
|
/* 512k */
|
|
dma_xfer((uint *)0x80000,0x80000,(uint *)0);
|
|
/* 1M */
|
|
dma_xfer((uint *)0x100000,0x100000,(uint *)0);
|
|
/* 2M */
|
|
dma_xfer((uint *)0x200000,0x200000,(uint *)0);
|
|
/* 4M */
|
|
dma_xfer((uint *)0x400000,0x400000,(uint *)0);
|
|
|
|
for (i = 1; i < dram_size / 0x800000; i++) {
|
|
dma_xfer((uint *)(0x800000*i),0x800000,(uint *)0);
|
|
}
|
|
|
|
/* Enable errors for ECC */
|
|
ddr->err_disable = 0x00000000;
|
|
asm("sync;isync;msync");
|
|
}
|
|
#endif
|
|
|
|
return dram_size;
|
|
}
|
|
|
|
#if defined(CFG_DRAM_TEST)
|
|
int testdram (void)
|
|
{
|
|
uint *pstart = (uint *) CFG_MEMTEST_START;
|
|
uint *pend = (uint *) CFG_MEMTEST_END;
|
|
uint *p;
|
|
|
|
printf("SDRAM test phase 1:\n");
|
|
for (p = pstart; p < pend; p++)
|
|
*p = 0xaaaaaaaa;
|
|
|
|
for (p = pstart; p < pend; p++) {
|
|
if (*p != 0xaaaaaaaa) {
|
|
printf ("SDRAM test fails at: %08x\n", (uint) p);
|
|
return 1;
|
|
}
|
|
}
|
|
|
|
printf("SDRAM test phase 2:\n");
|
|
for (p = pstart; p < pend; p++)
|
|
*p = 0x55555555;
|
|
|
|
for (p = pstart; p < pend; p++) {
|
|
if (*p != 0x55555555) {
|
|
printf ("SDRAM test fails at: %08x\n", (uint) p);
|
|
return 1;
|
|
}
|
|
}
|
|
|
|
printf("SDRAM test passed.\n");
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
#if !defined(CONFIG_SPD_EEPROM)
|
|
/*************************************************************************
|
|
* fixed sdram init -- doesn't use serial presence detect.
|
|
************************************************************************/
|
|
long int fixed_sdram (void)
|
|
{
|
|
#ifndef CFG_RAMBOOT
|
|
volatile ccsr_ddr_t *ddr= (void *)(CFG_MPC85xx_DDR_ADDR);
|
|
|
|
ddr->cs0_bnds = CFG_DDR_CS0_BNDS;
|
|
ddr->cs0_config = CFG_DDR_CS0_CONFIG;
|
|
ddr->timing_cfg_1 = CFG_DDR_TIMING_1;
|
|
ddr->timing_cfg_2 = CFG_DDR_TIMING_2;
|
|
ddr->sdram_mode = CFG_DDR_MODE;
|
|
ddr->sdram_interval = CFG_DDR_INTERVAL;
|
|
#if defined (CONFIG_DDR_ECC)
|
|
ddr->err_disable = 0x0000000D;
|
|
ddr->err_sbe = 0x00ff0000;
|
|
#endif
|
|
asm("sync;isync;msync");
|
|
udelay(500);
|
|
#if defined (CONFIG_DDR_ECC)
|
|
/* Enable ECC checking */
|
|
ddr->sdram_cfg = (CFG_DDR_CONTROL | 0x20000000);
|
|
#else
|
|
ddr->sdram_cfg = CFG_DDR_CONTROL;
|
|
#endif
|
|
asm("sync; isync; msync");
|
|
udelay(500);
|
|
#endif
|
|
return (CFG_SDRAM_SIZE * 1024 * 1024);
|
|
}
|
|
#endif /* !defined(CONFIG_SPD_EEPROM) */
|