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u-boot/board/sbc8349/sbc8349.c
Paul Gortmaker 91e2576977 mpc83xx: U-Boot support for Wind River SBC8349 
I've redone the SBC8349 support to match git-current, which
incorporates all the MPC834x updates from Freescale since the 1.1.6
release,  including the DDR changes.

I've kept all the SBC8349 files as parallel as possible to the
MPC8349EMDS ones for ease of maintenance and to allow for easy
inspection of what was changed to support this board.  Hence the SBC8349
U-Boot has FDT support and everything else that the MPC8349EMDS has.

Fortunately the Freescale updates added support for boards using CS0,
but I had to change spd_sdram.c to allow for board specific settings for
the sdram_clk_cntl (it is/was hard coded to zero, and that remains the
default if the board doesn't specify a value.)

Hopefully this should be mergeable as-is and require no whitespace
cleanups or similar, but if something doesn't measure up then let me
know and I'll fix it.

Thanks,
Paul.
2007-03-02 11:05:53 -06:00

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/*
* sbc8349.c -- WindRiver SBC8349 board support.
* Copyright (c) 2006-2007 Wind River Systems, Inc.
*
* Paul Gortmaker <paul.gortmaker@windriver.com>
* Based on board/mpc8349emds/mpc8349emds.c (and previous 834x releases.)
*
* 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 <ioports.h>
#include <mpc83xx.h>
#include <asm/mpc8349_pci.h>
#include <i2c.h>
#include <spd.h>
#include <miiphy.h>
#include <command.h>
#if defined(CONFIG_SPD_EEPROM)
#include <spd_sdram.h>
#endif
#if defined(CONFIG_OF_FLAT_TREE)
#include <ft_build.h>
#endif
int fixed_sdram(void);
void sdram_init(void);
#if defined(CONFIG_DDR_ECC) && defined(CONFIG_MPC83XX)
void ddr_enable_ecc(unsigned int dram_size);
#endif
#ifdef CONFIG_BOARD_EARLY_INIT_F
int board_early_init_f (void)
{
return 0;
}
#endif
#define ns2clk(ns) (ns / (1000000000 / CONFIG_8349_CLKIN) + 1)
long int initdram (int board_type)
{
volatile immap_t *im = (immap_t *)CFG_IMMR;
u32 msize = 0;
if ((im->sysconf.immrbar & IMMRBAR_BASE_ADDR) != (u32)im)
return -1;
puts("Initializing\n");
/* DDR SDRAM - Main SODIMM */
im->sysconf.ddrlaw[0].bar = CFG_DDR_BASE & LAWBAR_BAR;
#if defined(CONFIG_SPD_EEPROM)
msize = spd_sdram();
#else
msize = fixed_sdram();
#endif
/*
* Initialize SDRAM if it is on local bus.
*/
sdram_init();
#if defined(CONFIG_DDR_ECC) && !defined(CONFIG_ECC_INIT_VIA_DDRCONTROLLER)
/*
* Initialize and enable DDR ECC.
*/
ddr_enable_ecc(msize * 1024 * 1024);
#endif
puts(" DDR RAM: ");
/* return total bus SDRAM size(bytes) -- DDR */
return (msize * 1024 * 1024);
}
#if !defined(CONFIG_SPD_EEPROM)
/*************************************************************************
* fixed sdram init -- doesn't use serial presence detect.
************************************************************************/
int fixed_sdram(void)
{
volatile immap_t *im = (immap_t *)CFG_IMMR;
u32 msize = 0;
u32 ddr_size;
u32 ddr_size_log2;
msize = CFG_DDR_SIZE;
for (ddr_size = msize << 20, ddr_size_log2 = 0;
(ddr_size > 1);
ddr_size = ddr_size>>1, ddr_size_log2++) {
if (ddr_size & 1) {
return -1;
}
}
im->sysconf.ddrlaw[0].bar = ((CFG_DDR_SDRAM_BASE>>12) & 0xfffff);
im->sysconf.ddrlaw[0].ar = LAWAR_EN | ((ddr_size_log2 - 1) & LAWAR_SIZE);
#if (CFG_DDR_SIZE != 256)
#warning Currently any ddr size other than 256 is not supported
#endif
im->ddr.csbnds[2].csbnds = 0x0000000f;
im->ddr.cs_config[2] = CFG_DDR_CONFIG;
/* currently we use only one CS, so disable the other banks */
im->ddr.cs_config[0] = 0;
im->ddr.cs_config[1] = 0;
im->ddr.cs_config[3] = 0;
im->ddr.timing_cfg_1 = CFG_DDR_TIMING_1;
im->ddr.timing_cfg_2 = CFG_DDR_TIMING_2;
im->ddr.sdram_cfg =
SDRAM_CFG_SREN
#if defined(CONFIG_DDR_2T_TIMING)
| SDRAM_CFG_2T_EN
#endif
| 2 << SDRAM_CFG_SDRAM_TYPE_SHIFT;
#if defined (CONFIG_DDR_32BIT)
/* for 32-bit mode burst length is 8 */
im->ddr.sdram_cfg |= (SDRAM_CFG_32_BE | SDRAM_CFG_8_BE);
#endif
im->ddr.sdram_mode = CFG_DDR_MODE;
im->ddr.sdram_interval = CFG_DDR_INTERVAL;
udelay(200);
/* enable DDR controller */
im->ddr.sdram_cfg |= SDRAM_CFG_MEM_EN;
return msize;
}
#endif/*!CFG_SPD_EEPROM*/
int checkboard (void)
{
puts("Board: Wind River SBC834x\n");
return 0;
}
/*
* if board is fitted with SDRAM
*/
#if defined(CFG_BR2_PRELIM) \
&& defined(CFG_OR2_PRELIM) \
&& defined(CFG_LBLAWBAR2_PRELIM) \
&& defined(CFG_LBLAWAR2_PRELIM)
/*
* Initialize SDRAM memory on the Local Bus.
*/
void sdram_init(void)
{
volatile immap_t *immap = (immap_t *)CFG_IMMR;
volatile lbus83xx_t *lbc= &immap->lbus;
uint *sdram_addr = (uint *)CFG_LBC_SDRAM_BASE;
puts("\n SDRAM on Local Bus: ");
print_size (CFG_LBC_SDRAM_SIZE * 1024 * 1024, "\n");
/*
* Setup SDRAM Base and Option Registers, already done in cpu_init.c
*/
/* setup mtrpt, lsrt and lbcr for LB bus */
lbc->lbcr = CFG_LBC_LBCR;
lbc->mrtpr = CFG_LBC_MRTPR;
lbc->lsrt = CFG_LBC_LSRT;
asm("sync");
/*
* Configure the SDRAM controller Machine Mode Register.
*/
lbc->lsdmr = CFG_LBC_LSDMR_5; /* 0x40636733; normal operation */
lbc->lsdmr = CFG_LBC_LSDMR_1; /* 0x68636733; precharge all the banks */
asm("sync");
*sdram_addr = 0xff;
udelay(100);
lbc->lsdmr = CFG_LBC_LSDMR_2; /* 0x48636733; auto refresh */
asm("sync");
/*1 times*/
*sdram_addr = 0xff;
udelay(100);
/*2 times*/
*sdram_addr = 0xff;
udelay(100);
/*3 times*/
*sdram_addr = 0xff;
udelay(100);
/*4 times*/
*sdram_addr = 0xff;
udelay(100);
/*5 times*/
*sdram_addr = 0xff;
udelay(100);
/*6 times*/
*sdram_addr = 0xff;
udelay(100);
/*7 times*/
*sdram_addr = 0xff;
udelay(100);
/*8 times*/
*sdram_addr = 0xff;
udelay(100);
/* 0x58636733; mode register write operation */
lbc->lsdmr = CFG_LBC_LSDMR_4;
asm("sync");
*sdram_addr = 0xff;
udelay(100);
lbc->lsdmr = CFG_LBC_LSDMR_5; /* 0x40636733; normal operation */
asm("sync");
*sdram_addr = 0xff;
udelay(100);
}
#else
void sdram_init(void)
{
puts(" SDRAM on Local Bus: Disabled in config\n");
}
#endif
#if defined(CONFIG_DDR_ECC) && defined(CONFIG_DDR_ECC_CMD)
/*
* ECC user commands
*/
void ecc_print_status(void)
{
volatile immap_t *immap = (immap_t *)CFG_IMMR;
volatile ddr83xx_t *ddr = &immap->ddr;
printf("\nECC mode: %s\n\n", (ddr->sdram_cfg & SDRAM_CFG_ECC_EN) ? "ON" : "OFF");
/* Interrupts */
printf("Memory Error Interrupt Enable:\n");
printf(" Multiple-Bit Error Interrupt Enable: %d\n",
(ddr->err_int_en & ECC_ERR_INT_EN_MBEE) ? 1 : 0);
printf(" Single-Bit Error Interrupt Enable: %d\n",
(ddr->err_int_en & ECC_ERR_INT_EN_SBEE) ? 1 : 0);
printf(" Memory Select Error Interrupt Enable: %d\n\n",
(ddr->err_int_en & ECC_ERR_INT_EN_MSEE) ? 1 : 0);
/* Error disable */
printf("Memory Error Disable:\n");
printf(" Multiple-Bit Error Disable: %d\n",
(ddr->err_disable & ECC_ERROR_DISABLE_MBED) ? 1 : 0);
printf(" Sinle-Bit Error Disable: %d\n",
(ddr->err_disable & ECC_ERROR_DISABLE_SBED) ? 1 : 0);
printf(" Memory Select Error Disable: %d\n\n",
(ddr->err_disable & ECC_ERROR_DISABLE_MSED) ? 1 : 0);
/* Error injection */
printf("Memory Data Path Error Injection Mask High/Low: %08lx %08lx\n",
ddr->data_err_inject_hi, ddr->data_err_inject_lo);
printf("Memory Data Path Error Injection Mask ECC:\n");
printf(" ECC Mirror Byte: %d\n",
(ddr->ecc_err_inject & ECC_ERR_INJECT_EMB) ? 1 : 0);
printf(" ECC Injection Enable: %d\n",
(ddr->ecc_err_inject & ECC_ERR_INJECT_EIEN) ? 1 : 0);
printf(" ECC Error Injection Mask: 0x%02x\n\n",
ddr->ecc_err_inject & ECC_ERR_INJECT_EEIM);
/* SBE counter/threshold */
printf("Memory Single-Bit Error Management (0..255):\n");
printf(" Single-Bit Error Threshold: %d\n",
(ddr->err_sbe & ECC_ERROR_MAN_SBET) >> ECC_ERROR_MAN_SBET_SHIFT);
printf(" Single-Bit Error Counter: %d\n\n",
(ddr->err_sbe & ECC_ERROR_MAN_SBEC) >> ECC_ERROR_MAN_SBEC_SHIFT);
/* Error detect */
printf("Memory Error Detect:\n");
printf(" Multiple Memory Errors: %d\n",
(ddr->err_detect & ECC_ERROR_DETECT_MME) ? 1 : 0);
printf(" Multiple-Bit Error: %d\n",
(ddr->err_detect & ECC_ERROR_DETECT_MBE) ? 1 : 0);
printf(" Single-Bit Error: %d\n",
(ddr->err_detect & ECC_ERROR_DETECT_SBE) ? 1 : 0);
printf(" Memory Select Error: %d\n\n",
(ddr->err_detect & ECC_ERROR_DETECT_MSE) ? 1 : 0);
/* Capture data */
printf("Memory Error Address Capture: 0x%08lx\n", ddr->capture_address);
printf("Memory Data Path Read Capture High/Low: %08lx %08lx\n",
ddr->capture_data_hi, ddr->capture_data_lo);
printf("Memory Data Path Read Capture ECC: 0x%02x\n\n",
ddr->capture_ecc & CAPTURE_ECC_ECE);
printf("Memory Error Attributes Capture:\n");
printf(" Data Beat Number: %d\n",
(ddr->capture_attributes & ECC_CAPT_ATTR_BNUM) >> ECC_CAPT_ATTR_BNUM_SHIFT);
printf(" Transaction Size: %d\n",
(ddr->capture_attributes & ECC_CAPT_ATTR_TSIZ) >> ECC_CAPT_ATTR_TSIZ_SHIFT);
printf(" Transaction Source: %d\n",
(ddr->capture_attributes & ECC_CAPT_ATTR_TSRC) >> ECC_CAPT_ATTR_TSRC_SHIFT);
printf(" Transaction Type: %d\n",
(ddr->capture_attributes & ECC_CAPT_ATTR_TTYP) >> ECC_CAPT_ATTR_TTYP_SHIFT);
printf(" Error Information Valid: %d\n\n",
ddr->capture_attributes & ECC_CAPT_ATTR_VLD);
}
int do_ecc ( cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
{
volatile immap_t *immap = (immap_t *)CFG_IMMR;
volatile ddr83xx_t *ddr = &immap->ddr;
volatile u32 val;
u64 *addr, count, val64;
register u64 *i;
if (argc > 4) {
printf ("Usage:\n%s\n", cmdtp->usage);
return 1;
}
if (argc == 2) {
if (strcmp(argv[1], "status") == 0) {
ecc_print_status();
return 0;
} else if (strcmp(argv[1], "captureclear") == 0) {
ddr->capture_address = 0;
ddr->capture_data_hi = 0;
ddr->capture_data_lo = 0;
ddr->capture_ecc = 0;
ddr->capture_attributes = 0;
return 0;
}
}
if (argc == 3) {
if (strcmp(argv[1], "sbecnt") == 0) {
val = simple_strtoul(argv[2], NULL, 10);
if (val > 255) {
printf("Incorrect Counter value, should be 0..255\n");
return 1;
}
val = (val << ECC_ERROR_MAN_SBEC_SHIFT);
val |= (ddr->err_sbe & ECC_ERROR_MAN_SBET);
ddr->err_sbe = val;
return 0;
} else if (strcmp(argv[1], "sbethr") == 0) {
val = simple_strtoul(argv[2], NULL, 10);
if (val > 255) {
printf("Incorrect Counter value, should be 0..255\n");
return 1;
}
val = (val << ECC_ERROR_MAN_SBET_SHIFT);
val |= (ddr->err_sbe & ECC_ERROR_MAN_SBEC);
ddr->err_sbe = val;
return 0;
} else if (strcmp(argv[1], "errdisable") == 0) {
val = ddr->err_disable;
if (strcmp(argv[2], "+sbe") == 0) {
val |= ECC_ERROR_DISABLE_SBED;
} else if (strcmp(argv[2], "+mbe") == 0) {
val |= ECC_ERROR_DISABLE_MBED;
} else if (strcmp(argv[2], "+mse") == 0) {
val |= ECC_ERROR_DISABLE_MSED;
} else if (strcmp(argv[2], "+all") == 0) {
val |= (ECC_ERROR_DISABLE_SBED |
ECC_ERROR_DISABLE_MBED |
ECC_ERROR_DISABLE_MSED);
} else if (strcmp(argv[2], "-sbe") == 0) {
val &= ~ECC_ERROR_DISABLE_SBED;
} else if (strcmp(argv[2], "-mbe") == 0) {
val &= ~ECC_ERROR_DISABLE_MBED;
} else if (strcmp(argv[2], "-mse") == 0) {
val &= ~ECC_ERROR_DISABLE_MSED;
} else if (strcmp(argv[2], "-all") == 0) {
val &= ~(ECC_ERROR_DISABLE_SBED |
ECC_ERROR_DISABLE_MBED |
ECC_ERROR_DISABLE_MSED);
} else {
printf("Incorrect err_disable field\n");
return 1;
}
ddr->err_disable = val;
__asm__ __volatile__ ("sync");
__asm__ __volatile__ ("isync");
return 0;
} else if (strcmp(argv[1], "errdetectclr") == 0) {
val = ddr->err_detect;
if (strcmp(argv[2], "mme") == 0) {
val |= ECC_ERROR_DETECT_MME;
} else if (strcmp(argv[2], "sbe") == 0) {
val |= ECC_ERROR_DETECT_SBE;
} else if (strcmp(argv[2], "mbe") == 0) {
val |= ECC_ERROR_DETECT_MBE;
} else if (strcmp(argv[2], "mse") == 0) {
val |= ECC_ERROR_DETECT_MSE;
} else if (strcmp(argv[2], "all") == 0) {
val |= (ECC_ERROR_DETECT_MME |
ECC_ERROR_DETECT_MBE |
ECC_ERROR_DETECT_SBE |
ECC_ERROR_DETECT_MSE);
} else {
printf("Incorrect err_detect field\n");
return 1;
}
ddr->err_detect = val;
return 0;
} else if (strcmp(argv[1], "injectdatahi") == 0) {
val = simple_strtoul(argv[2], NULL, 16);
ddr->data_err_inject_hi = val;
return 0;
} else if (strcmp(argv[1], "injectdatalo") == 0) {
val = simple_strtoul(argv[2], NULL, 16);
ddr->data_err_inject_lo = val;
return 0;
} else if (strcmp(argv[1], "injectecc") == 0) {
val = simple_strtoul(argv[2], NULL, 16);
if (val > 0xff) {
printf("Incorrect ECC inject mask, should be 0x00..0xff\n");
return 1;
}
val |= (ddr->ecc_err_inject & ~ECC_ERR_INJECT_EEIM);
ddr->ecc_err_inject = val;
return 0;
} else if (strcmp(argv[1], "inject") == 0) {
val = ddr->ecc_err_inject;
if (strcmp(argv[2], "en") == 0)
val |= ECC_ERR_INJECT_EIEN;
else if (strcmp(argv[2], "dis") == 0)
val &= ~ECC_ERR_INJECT_EIEN;
else
printf("Incorrect command\n");
ddr->ecc_err_inject = val;
__asm__ __volatile__ ("sync");
__asm__ __volatile__ ("isync");
return 0;
} else if (strcmp(argv[1], "mirror") == 0) {
val = ddr->ecc_err_inject;
if (strcmp(argv[2], "en") == 0)
val |= ECC_ERR_INJECT_EMB;
else if (strcmp(argv[2], "dis") == 0)
val &= ~ECC_ERR_INJECT_EMB;
else
printf("Incorrect command\n");
ddr->ecc_err_inject = val;
return 0;
}
}
if (argc == 4) {
if (strcmp(argv[1], "test") == 0) {
addr = (u64 *)simple_strtoul(argv[2], NULL, 16);
count = simple_strtoul(argv[3], NULL, 16);
if ((u32)addr % 8) {
printf("Address not alligned on double word boundary\n");
return 1;
}
disable_interrupts();
icache_disable();
for (i = addr; i < addr + count; i++) {
/* enable injects */
ddr->ecc_err_inject |= ECC_ERR_INJECT_EIEN;
__asm__ __volatile__ ("sync");
__asm__ __volatile__ ("isync");
/* write memory location injecting errors */
*i = 0x1122334455667788ULL;
__asm__ __volatile__ ("sync");
/* disable injects */
ddr->ecc_err_inject &= ~ECC_ERR_INJECT_EIEN;
__asm__ __volatile__ ("sync");
__asm__ __volatile__ ("isync");
/* read data, this generates ECC error */
val64 = *i;
__asm__ __volatile__ ("sync");
/* disable errors for ECC */
ddr->err_disable |= ~ECC_ERROR_ENABLE;
__asm__ __volatile__ ("sync");
__asm__ __volatile__ ("isync");
/* re-initialize memory, write the location again
* NOT injecting errors this time */
*i = 0xcafecafecafecafeULL;
__asm__ __volatile__ ("sync");
/* enable errors for ECC */
ddr->err_disable &= ECC_ERROR_ENABLE;
__asm__ __volatile__ ("sync");
__asm__ __volatile__ ("isync");
}
icache_enable();
enable_interrupts();
return 0;
}
}
printf ("Usage:\n%s\n", cmdtp->usage);
return 1;
}
U_BOOT_CMD(
ecc, 4, 0, do_ecc,
"ecc - support for DDR ECC features\n",
"status - print out status info\n"
"ecc captureclear - clear capture regs data\n"
"ecc sbecnt <val> - set Single-Bit Error counter\n"
"ecc sbethr <val> - set Single-Bit Threshold\n"
"ecc errdisable <flag> - clear/set disable Memory Error Disable, flag:\n"
" [-|+]sbe - Single-Bit Error\n"
" [-|+]mbe - Multiple-Bit Error\n"
" [-|+]mse - Memory Select Error\n"
" [-|+]all - all errors\n"
"ecc errdetectclr <flag> - clear Memory Error Detect, flag:\n"
" mme - Multiple Memory Errors\n"
" sbe - Single-Bit Error\n"
" mbe - Multiple-Bit Error\n"
" mse - Memory Select Error\n"
" all - all errors\n"
"ecc injectdatahi <hi> - set Memory Data Path Error Injection Mask High\n"
"ecc injectdatalo <lo> - set Memory Data Path Error Injection Mask Low\n"
"ecc injectecc <ecc> - set ECC Error Injection Mask\n"
"ecc inject <en|dis> - enable/disable error injection\n"
"ecc mirror <en|dis> - enable/disable mirror byte\n"
"ecc test <addr> <cnt> - test mem region:\n"
" - enables injects\n"
" - writes pattern injecting errors\n"
" - disables injects\n"
" - reads pattern back, generates error\n"
" - re-inits memory"
);
#endif /* if defined(CONFIG_DDR_ECC) && defined(CONFIG_DDR_ECC_CMD) */
#if defined(CONFIG_OF_FLAT_TREE) && defined(CONFIG_OF_BOARD_SETUP)
void
ft_board_setup(void *blob, bd_t *bd)
{
u32 *p;
int len;
#ifdef CONFIG_PCI
ft_pci_setup(blob, bd);
#endif
ft_cpu_setup(blob, bd);
p = ft_get_prop(blob, "/memory/reg", &len);
if (p != NULL) {
*p++ = cpu_to_be32(bd->bi_memstart);
*p = cpu_to_be32(bd->bi_memsize);
}
}
#endif
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