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u-boot/board/intercontrol/digsy_mtc/digsy_mtc.c
Anatolij Gustschin 02ab0970b3 mpc5200: digsy_mtc: Fix extension board detection 
Switch to extension board detection using pci_find_device()
instead of detecting by i2c access to EEPROM device on
extension board.

This is a cleaner detection method since EEPROM addresses
can be different on different board revisions. This also
avoids "i2c_read: failed to address chip" error messages
in the boot log on boards without extension board which
may confuse users.

Signed-off-by: Anatolij Gustschin <agust@denx.de>
2011-12-12 08:17:05 +01:00

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/*
* (C) Copyright 2003
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
*
* (C) Copyright 2004
* Mark Jonas, Freescale Semiconductor, mark.jonas@motorola.com.
*
* (C) Copyright 2005-2009
* Modified for InterControl digsyMTC MPC5200 board by
* Frank Bodammer, GCD Hard- & Software GmbH,
* frank.bodammer@gcd-solutions.de
*
* (C) Copyright 2009
* Grzegorz Bernacki, Semihalf, gjb@semihalf.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 <mpc5xxx.h>
#include <net.h>
#include <pci.h>
#include <asm/processor.h>
#include <asm/io.h>
#include "eeprom.h"
#if defined(CONFIG_DIGSY_REV5)
#include "is45s16800a2.h"
#include <mtd/cfi_flash.h>
#include <flash.h>
#else
#include "is42s16800a-7t.h"
#endif
#include <libfdt.h>
#include <fdt_support.h>
#include <i2c.h>
#include <mb862xx.h>
DECLARE_GLOBAL_DATA_PTR;
extern int usb_cpu_init(void);
#if defined(CONFIG_DIGSY_REV5)
/*
* The M29W128GH needs a specail reset command function,
* details see the doc/README.cfi file
*/
void flash_cmd_reset(flash_info_t *info)
{
flash_write_cmd(info, 0, 0, AMD_CMD_RESET);
}
#endif
#ifndef CONFIG_SYS_RAMBOOT
static void sdram_start(int hi_addr)
{
long hi_addr_bit = hi_addr ? 0x01000000 : 0;
long control = SDRAM_CONTROL | hi_addr_bit;
/* unlock mode register */
out_be32((void *)MPC5XXX_SDRAM_CTRL, control | 0x80000000);
/* precharge all banks */
out_be32((void *)MPC5XXX_SDRAM_CTRL, control | 0x80000002);
/* auto refresh */
out_be32((void *)MPC5XXX_SDRAM_CTRL, control | 0x80000004);
/* set mode register */
out_be32((void *)MPC5XXX_SDRAM_MODE, SDRAM_MODE);
/* normal operation */
out_be32((void *)MPC5XXX_SDRAM_CTRL, control);
}
#endif
/*
* ATTENTION: Although partially referenced initdram does NOT make real use
* use of CONFIG_SYS_SDRAM_BASE. The code does not work if
* CONFIG_SYS_SDRAM_BASE is something else than 0x00000000.
*/
phys_size_t initdram(int board_type)
{
ulong dramsize = 0;
ulong dramsize2 = 0;
uint svr, pvr;
#ifndef CONFIG_SYS_RAMBOOT
ulong test1, test2;
/* setup SDRAM chip selects */
out_be32((void *)MPC5XXX_SDRAM_CS0CFG, 0x0000001C); /* 512MB at 0x0 */
out_be32((void *)MPC5XXX_SDRAM_CS1CFG, 0x80000000); /* disabled */
/* setup config registers */
out_be32((void *)MPC5XXX_SDRAM_CONFIG1, SDRAM_CONFIG1);
out_be32((void *)MPC5XXX_SDRAM_CONFIG2, SDRAM_CONFIG2);
/* find RAM size using SDRAM CS0 only */
sdram_start(0);
test1 = get_ram_size((long *)CONFIG_SYS_SDRAM_BASE, 0x08000000);
sdram_start(1);
test2 = get_ram_size((long *)CONFIG_SYS_SDRAM_BASE, 0x08000000);
if (test1 > test2) {
sdram_start(0);
dramsize = test1;
} else {
dramsize = test2;
}
/* memory smaller than 1MB is impossible */
if (dramsize < (1 << 20))
dramsize = 0;
/* set SDRAM CS0 size according to the amount of RAM found */
if (dramsize > 0) {
out_be32((void *)MPC5XXX_SDRAM_CS0CFG,
(0x13 + __builtin_ffs(dramsize >> 20) - 1));
} else {
out_be32((void *)MPC5XXX_SDRAM_CS0CFG, 0); /* disabled */
}
/* let SDRAM CS1 start right after CS0 */
out_be32((void *)MPC5XXX_SDRAM_CS1CFG, dramsize + 0x0000001C);
/* find RAM size using SDRAM CS1 only */
test1 = get_ram_size((long *)(CONFIG_SYS_SDRAM_BASE + dramsize),
0x08000000);
dramsize2 = test1;
/* memory smaller than 1MB is impossible */
if (dramsize2 < (1 << 20))
dramsize2 = 0;
/* set SDRAM CS1 size according to the amount of RAM found */
if (dramsize2 > 0) {
out_be32((void *)MPC5XXX_SDRAM_CS1CFG, (dramsize |
(0x13 + __builtin_ffs(dramsize2 >> 20) - 1)));
} else {
out_be32((void *)MPC5XXX_SDRAM_CS1CFG, dramsize); /* disabled */
}
#else /* CONFIG_SYS_RAMBOOT */
/* retrieve size of memory connected to SDRAM CS0 */
dramsize = in_be32((void *)MPC5XXX_SDRAM_CS0CFG) & 0xFF;
if (dramsize >= 0x13)
dramsize = (1 << (dramsize - 0x13)) << 20;
else
dramsize = 0;
/* retrieve size of memory connected to SDRAM CS1 */
dramsize2 = in_be32((void *)MPC5XXX_SDRAM_CS1CFG) & 0xFF;
if (dramsize2 >= 0x13)
dramsize2 = (1 << (dramsize2 - 0x13)) << 20;
else
dramsize2 = 0;
#endif /* CONFIG_SYS_RAMBOOT */
/*
* On MPC5200B we need to set the special configuration delay in the
* DDR controller. Please refer to Freescale's AN3221 "MPC5200B SDRAM
* Initialization and Configuration", 3.3.1 SDelay--MBAR + 0x0190:
*
* "The SDelay should be written to a value of 0x00000004. It is
* required to account for changes caused by normal wafer processing
* parameters."
*/
svr = get_svr();
pvr = get_pvr();
if ((SVR_MJREV(svr) >= 2) &&
(PVR_MAJ(pvr) == 1) && (PVR_MIN(pvr) == 4))
out_be32((void *)MPC5XXX_SDRAM_SDELAY, 0x04);
return dramsize + dramsize2;
}
int checkboard(void)
{
char buf[64];
int i = getenv_f("serial#", buf, sizeof(buf));
puts ("Board: InterControl digsyMTC");
#if defined(CONFIG_DIGSY_REV5)
puts (" rev5");
#endif
if (i > 0) {
puts(", ");
puts(buf);
}
putc('\n');
return 0;
}
#if defined(CONFIG_VIDEO)
#define GPIO_USB1_0 0x00010000 /* Power-On pin */
#define GPIO_USB1_9 0x08 /* PX_~EN pin */
#define GPIO_EE_DO 0x10 /* PSC6_0 (DO) pin */
#define GPIO_EE_CTS 0x20 /* PSC6_1 (CTS) pin */
#define GPIO_EE_DI 0x10000000 /* PSC6_2 (DI) pin */
#define GPIO_EE_CLK 0x20000000 /* PSC6_3 (CLK) pin */
#define GPT_GPIO_ON 0x00000034 /* GPT as simple GPIO, high */
static void exbo_hw_init(void)
{
struct mpc5xxx_gpt *gpt = (struct mpc5xxx_gpt *)MPC5XXX_GPT;
struct mpc5xxx_gpio *gpio = (struct mpc5xxx_gpio *)MPC5XXX_GPIO;
struct mpc5xxx_wu_gpio *wu_gpio =
(struct mpc5xxx_wu_gpio *)MPC5XXX_WU_GPIO;
/* configure IrDA pins (PSC6 port) as gpios */
gpio->port_config &= 0xFF8FFFFF;
/* Init for USB1_0, EE_CLK and EE_DI - Low */
setbits_be32(&gpio->simple_ddr,
GPIO_USB1_0 | GPIO_EE_CLK | GPIO_EE_DI);
clrbits_be32(&gpio->simple_ode,
GPIO_USB1_0 | GPIO_EE_CLK | GPIO_EE_DI);
clrbits_be32(&gpio->simple_dvo,
GPIO_USB1_0 | GPIO_EE_CLK | GPIO_EE_DI);
setbits_be32(&gpio->simple_gpioe,
GPIO_USB1_0 | GPIO_EE_CLK | GPIO_EE_DI);
/* Init for EE_DO, EE_CTS - Input */
clrbits_8(&wu_gpio->ddr, GPIO_EE_DO | GPIO_EE_CTS);
setbits_8(&wu_gpio->enable, GPIO_EE_DO | GPIO_EE_CTS);
/* Init for PX_~EN (USB1_9) - High */
clrbits_8(&gpio->sint_ode, GPIO_USB1_9);
setbits_8(&gpio->sint_ddr, GPIO_USB1_9);
clrbits_8(&gpio->sint_inten, GPIO_USB1_9);
setbits_8(&gpio->sint_dvo, GPIO_USB1_9);
setbits_8(&gpio->sint_gpioe, GPIO_USB1_9);
/* Init for ~OE Switch (GPIO3) - Timer_0 GPIO High */
out_be32(&gpt[0].emsr, GPT_GPIO_ON);
/* Init for S Switch (GPIO4) - Timer_1 GPIO High */
out_be32(&gpt[1].emsr, GPT_GPIO_ON);
/* Power-On camera supply */
setbits_be32(&gpio->simple_dvo, GPIO_USB1_0);
}
#else
static inline void exbo_hw_init(void) {}
#endif /* CONFIG_VIDEO */
int board_early_init_r(void)
{
#ifdef CONFIG_MPC52XX_SPI
struct mpc5xxx_gpt *gpt = (struct mpc5xxx_gpt*)MPC5XXX_GPT;
#endif
/*
* Now, when we are in RAM, enable flash write access for detection
* process. Note that CS_BOOT cannot be cleared when executing in
* flash.
*/
/* disable CS_BOOT */
clrbits_be32((void *)MPC5XXX_ADDECR, (1 << 25));
/* enable CS1 */
setbits_be32((void *)MPC5XXX_ADDECR, (1 << 17));
/* enable CS0 */
setbits_be32((void *)MPC5XXX_ADDECR, (1 << 16));
#if defined(CONFIG_USB_OHCI_NEW) && defined(CONFIG_SYS_USB_OHCI_CPU_INIT)
/* Low level USB init, required for proper kernel operation */
usb_cpu_init();
#endif
#ifdef CONFIG_MPC52XX_SPI
/* GPT 6 Output Enable */
out_be32(&gpt[6].emsr, 0x00000034);
/* GPT 7 Output Enable */
out_be32(&gpt[7].emsr, 0x00000034);
#endif
return (0);
}
void board_get_enetaddr (uchar * enet)
{
ushort read = 0;
ushort addr_of_eth_addr = 0;
ushort len_sys = 0;
ushort len_sys_cfg = 0;
/* check identification word */
eeprom_read(EEPROM_ADDR, EEPROM_ADDR_IDENT, (uchar *)&read, 2);
if (read != EEPROM_IDENT)
return;
/* calculate offset of config area */
eeprom_read(EEPROM_ADDR, EEPROM_ADDR_LEN_SYS, (uchar *)&len_sys, 2);
eeprom_read(EEPROM_ADDR, EEPROM_ADDR_LEN_SYSCFG,
(uchar *)&len_sys_cfg, 2);
addr_of_eth_addr = (len_sys + len_sys_cfg + EEPROM_ADDR_ETHADDR) << 1;
if (addr_of_eth_addr >= EEPROM_LEN)
return;
eeprom_read(EEPROM_ADDR, addr_of_eth_addr, enet, 6);
}
int misc_init_r(void)
{
pci_dev_t devbusfn;
uchar enetaddr[6];
/* check if graphic extension board is present */
devbusfn = pci_find_device(PCI_VENDOR_ID_FUJITSU,
PCI_DEVICE_ID_CORAL_PA, 0);
if (devbusfn != -1)
exbo_hw_init();
if (!eth_getenv_enetaddr("ethaddr", enetaddr)) {
board_get_enetaddr(enetaddr);
eth_setenv_enetaddr("ethaddr", enetaddr);
}
return 0;
}
#ifdef CONFIG_PCI
static struct pci_controller hose;
extern void pci_mpc5xxx_init(struct pci_controller *);
void pci_init_board(void)
{
pci_mpc5xxx_init(&hose);
}
#endif
#ifdef CONFIG_CMD_IDE
#ifdef CONFIG_IDE_RESET
void init_ide_reset(void)
{
debug ("init_ide_reset\n");
/* set gpio output value to 1 */
setbits_be32((void *)MPC5XXX_WU_GPIO_DATA_O, (1 << 25));
/* open drain output */
setbits_be32((void *)MPC5XXX_WU_GPIO_ODE, (1 << 25));
/* direction output */
setbits_be32((void *)MPC5XXX_WU_GPIO_DIR, (1 << 25));
/* enable gpio */
setbits_be32((void *)MPC5XXX_WU_GPIO_ENABLE, (1 << 25));
}
void ide_set_reset(int idereset)
{
debug ("ide_reset(%d)\n", idereset);
/* set gpio output value to 0 */
clrbits_be32((void *)MPC5XXX_WU_GPIO_DATA_O, (1 << 25));
/* open drain output */
setbits_be32((void *)MPC5XXX_WU_GPIO_ODE, (1 << 25));
/* direction output */
setbits_be32((void *)MPC5XXX_WU_GPIO_DIR, (1 << 25));
/* enable gpio */
setbits_be32((void *)MPC5XXX_WU_GPIO_ENABLE, (1 << 25));
udelay(10000);
/* set gpio output value to 1 */
setbits_be32((void *)MPC5XXX_WU_GPIO_DATA_O, (1 << 25));
/* open drain output */
setbits_be32((void *)MPC5XXX_WU_GPIO_ODE, (1 << 25));
/* direction output */
setbits_be32((void *)MPC5XXX_WU_GPIO_DIR, (1 << 25));
/* enable gpio */
setbits_be32((void *)MPC5XXX_WU_GPIO_ENABLE, (1 << 25));
}
#endif /* CONFIG_IDE_RESET */
#endif /* CONFIG_CMD_IDE */
#if defined(CONFIG_OF_LIBFDT) && defined(CONFIG_OF_BOARD_SETUP)
static void ft_delete_node(void *fdt, const char *compat)
{
int off = -1;
int ret;
off = fdt_node_offset_by_compatible(fdt, -1, compat);
if (off < 0) {
printf("Could not find %s node.\n", compat);
return;
}
ret = fdt_del_node(fdt, off);
if (ret < 0)
printf("Could not delete %s node.\n", compat);
}
#if defined(CONFIG_SYS_UPDATE_FLASH_SIZE)
static void ft_adapt_flash_base(void *blob)
{
flash_info_t *dev = &flash_info[0];
int off;
struct fdt_property *prop;
int len;
u32 *reg, *reg2;
off = fdt_node_offset_by_compatible(blob, -1, "fsl,mpc5200b-lpb");
if (off < 0) {
printf("Could not find fsl,mpc5200b-lpb node.\n");
return;
}
/* found compatible property */
prop = fdt_get_property_w(blob, off, "ranges", &len);
if (prop) {
reg = reg2 = (u32 *)&prop->data[0];
reg[2] = dev->start[0];
reg[3] = dev->size;
fdt_setprop(blob, off, "ranges", reg2, len);
} else
printf("Could not find ranges\n");
}
extern ulong flash_get_size (phys_addr_t base, int banknum);
/* Update the Flash Baseaddr settings */
int update_flash_size (int flash_size)
{
volatile struct mpc5xxx_mmap_ctl *mm =
(struct mpc5xxx_mmap_ctl *) CONFIG_SYS_MBAR;
flash_info_t *dev;
int i;
int size = 0;
unsigned long base = 0x0;
u32 *cs_reg = (u32 *)&mm->cs0_start;
for (i = 0; i < 2; i++) {
dev = &flash_info[i];
if (dev->size) {
/* calculate new base addr for this chipselect */
base -= dev->size;
out_be32(cs_reg, START_REG(base));
cs_reg++;
out_be32(cs_reg, STOP_REG(base, dev->size));
cs_reg++;
/* recalculate the sectoraddr in the cfi driver */
size += flash_get_size(base, i);
}
}
flash_protect_default();
gd->bd->bi_flashstart = base;
return 0;
}
#endif /* defined(CONFIG_SYS_UPDATE_FLASH_SIZE) */
void ft_board_setup(void *blob, bd_t *bd)
{
int phy_addr = CONFIG_PHY_ADDR;
char eth_path[] = "/soc5200@f0000000/mdio@3000/ethernet-phy@0";
ft_cpu_setup(blob, bd);
/*
* There are 2 RTC nodes in the DTS, so remove
* the unneeded node here.
*/
#if defined(CONFIG_DIGSY_REV5)
ft_delete_node(blob, "dallas,ds1339");
#else
ft_delete_node(blob, "mc,rv3029c2");
#endif
#if defined(CONFIG_SYS_UPDATE_FLASH_SIZE)
#ifdef CONFIG_FDT_FIXUP_NOR_FLASH_SIZE
/* Update reg property in all nor flash nodes too */
fdt_fixup_nor_flash_size(blob);
#endif
ft_adapt_flash_base(blob);
#endif
/* fix up the phy address */
do_fixup_by_path(blob, eth_path, "reg", &phy_addr, sizeof(int), 0);
}
#endif /* defined(CONFIG_OF_LIBFDT) && defined(CONFIG_OF_BOARD_SETUP) */
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