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u-boot/board/freescale/mpc8349itx/mpc8349itx.c
Simon Glass e895a4b06f fdt: Allow ft_board_setup() to report failure 
This function can fail if the device tree runs out of space. Rather than
silently booting with an incomplete device tree, allow the failure to be
detected.

Unfortunately this involves changing a lot of places in the code. I have
not changed behvaiour to return an error where one is not currently
returned, to avoid unexpected breakage.

Eventually it would be nice to allow boards to register functions to be
called to update the device tree. This would avoid all the many functions
to do this. However it's not clear yet if this should be done using driver
model or with a linker list. This work is left for later.

Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Anatolij Gustschin <agust@denx.de>
2014-11-21 04:43:15 +01:00

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/*
* Copyright (C) Freescale Semiconductor, Inc. 2006.
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <ioports.h>
#include <mpc83xx.h>
#include <i2c.h>
#include <miiphy.h>
#include <vsc7385.h>
#ifdef CONFIG_PCI
#include <asm/mpc8349_pci.h>
#include <pci.h>
#endif
#include <spd_sdram.h>
#include <asm/mmu.h>
#if defined(CONFIG_OF_LIBFDT)
#include <libfdt.h>
#endif
#ifndef CONFIG_SPD_EEPROM
/*************************************************************************
* fixed sdram init -- doesn't use serial presence detect.
************************************************************************/
int fixed_sdram(void)
{
volatile immap_t *im = (immap_t *) CONFIG_SYS_IMMR;
/* The size of RAM, in bytes */
u32 ddr_size = CONFIG_SYS_DDR_SIZE << 20;
u32 ddr_size_log2 = __ilog2(ddr_size);
im->sysconf.ddrlaw[0].ar =
LAWAR_EN | ((ddr_size_log2 - 1) & LAWAR_SIZE);
im->sysconf.ddrlaw[0].bar = CONFIG_SYS_DDR_SDRAM_BASE & 0xfffff000;
#if ((CONFIG_SYS_DDR_SDRAM_BASE & 0x00FFFFFF) != 0)
#warning Chip select bounds is only configurable in 16MB increments
#endif
im->ddr.csbnds[0].csbnds =
((CONFIG_SYS_DDR_SDRAM_BASE >> CSBNDS_SA_SHIFT) & CSBNDS_SA) |
(((CONFIG_SYS_DDR_SDRAM_BASE + ddr_size - 1) >>
CSBNDS_EA_SHIFT) & CSBNDS_EA);
im->ddr.cs_config[0] = CONFIG_SYS_DDR_CS0_CONFIG;
/* Only one CS for DDR */
im->ddr.cs_config[1] = 0;
im->ddr.cs_config[2] = 0;
im->ddr.cs_config[3] = 0;
debug("cs0_bnds = 0x%08x\n", im->ddr.csbnds[0].csbnds);
debug("cs0_config = 0x%08x\n", im->ddr.cs_config[0]);
debug("DDR:bar=0x%08x\n", im->sysconf.ddrlaw[0].bar);
debug("DDR:ar=0x%08x\n", im->sysconf.ddrlaw[0].ar);
im->ddr.timing_cfg_1 = CONFIG_SYS_DDR_TIMING_1;
im->ddr.timing_cfg_2 = CONFIG_SYS_DDR_TIMING_2;/* Was "2 << TIMING_CFG2_WR_DATA_DELAY_SHIFT" */
im->ddr.sdram_cfg = SDRAM_CFG_SREN | SDRAM_CFG_SDRAM_TYPE_DDR1;
im->ddr.sdram_mode =
(0x0000 << SDRAM_MODE_ESD_SHIFT) | (0x0032 << SDRAM_MODE_SD_SHIFT);
im->ddr.sdram_interval =
(0x0410 << SDRAM_INTERVAL_REFINT_SHIFT) | (0x0100 <<
SDRAM_INTERVAL_BSTOPRE_SHIFT);
im->ddr.sdram_clk_cntl = CONFIG_SYS_DDR_SDRAM_CLK_CNTL;
udelay(200);
im->ddr.sdram_cfg |= SDRAM_CFG_MEM_EN;
debug("DDR:timing_cfg_1=0x%08x\n", im->ddr.timing_cfg_1);
debug("DDR:timing_cfg_2=0x%08x\n", im->ddr.timing_cfg_2);
debug("DDR:sdram_mode=0x%08x\n", im->ddr.sdram_mode);
debug("DDR:sdram_interval=0x%08x\n", im->ddr.sdram_interval);
debug("DDR:sdram_cfg=0x%08x\n", im->ddr.sdram_cfg);
return CONFIG_SYS_DDR_SIZE;
}
#endif
#ifdef CONFIG_PCI
/*
* Initialize PCI Devices, report devices found
*/
#ifndef CONFIG_PCI_PNP
static struct pci_config_table pci_mpc83xxmitx_config_table[] = {
{
PCI_ANY_ID,
PCI_ANY_ID,
PCI_ANY_ID,
PCI_ANY_ID,
0x0f,
PCI_ANY_ID,
pci_cfgfunc_config_device,
{
PCI_ENET0_IOADDR,
PCI_ENET0_MEMADDR,
PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER}
},
{}
}
#endif
volatile static struct pci_controller hose[] = {
{
#ifndef CONFIG_PCI_PNP
config_table:pci_mpc83xxmitx_config_table,
#endif
},
{
#ifndef CONFIG_PCI_PNP
config_table:pci_mpc83xxmitx_config_table,
#endif
}
};
#endif /* CONFIG_PCI */
phys_size_t initdram(int board_type)
{
volatile immap_t *im = (immap_t *) CONFIG_SYS_IMMR;
u32 msize = 0;
#ifdef CONFIG_DDR_ECC
volatile ddr83xx_t *ddr = &im->ddr;
#endif
if ((im->sysconf.immrbar & IMMRBAR_BASE_ADDR) != (u32) im)
return -1;
/* DDR SDRAM - Main SODIMM */
im->sysconf.ddrlaw[0].bar = CONFIG_SYS_DDR_BASE & LAWBAR_BAR;
#ifdef CONFIG_SPD_EEPROM
msize = spd_sdram();
#else
msize = fixed_sdram();
#endif
#ifdef CONFIG_DDR_ECC
if (ddr->sdram_cfg & SDRAM_CFG_ECC_EN)
/* Unlike every other board, on the 83xx spd_sdram() returns
megabytes instead of just bytes. That's why we need to
multiple by 1MB when calling ddr_enable_ecc(). */
ddr_enable_ecc(msize * 1048576);
#endif
/* return total bus RAM size(bytes) */
return msize * 1024 * 1024;
}
int checkboard(void)
{
#ifdef CONFIG_MPC8349ITX
puts("Board: Freescale MPC8349E-mITX\n");
#else
puts("Board: Freescale MPC8349E-mITX-GP\n");
#endif
return 0;
}
/*
* Implement a work-around for a hardware problem with compact
* flash.
*
* Program the UPM if compact flash is enabled.
*/
int misc_init_f(void)
{
#ifdef CONFIG_VSC7385_ENET
volatile u32 *vsc7385_cpuctrl;
/* 0x1c0c0 is the VSC7385 CPU Control (CPUCTRL) Register. The power up
default of VSC7385 L1_IRQ and L2_IRQ requests are active high. That
means it is 0 when the IRQ is not active. This makes the wire-AND
logic always assert IRQ7 to CPU even if there is no request from the
switch. Since the compact flash and the switch share the same IRQ,
the Linux kernel will think that the compact flash is requesting irq
and get stuck when it tries to clear the IRQ. Thus we need to set
the L2_IRQ0 and L2_IRQ1 to active low.
The following code sets the L1_IRQ and L2_IRQ polarity to active low.
Without this code, compact flash will not work in Linux because
unlike U-Boot, Linux uses the IRQ, so this code is necessary if we
don't enable compact flash for U-Boot.
*/
vsc7385_cpuctrl = (volatile u32 *)(CONFIG_SYS_VSC7385_BASE + 0x1c0c0);
*vsc7385_cpuctrl |= 0x0c;
#endif
#ifdef CONFIG_COMPACT_FLASH
/* UPM Table Configuration Code */
static uint UPMATable[] = {
0xcffffc00, 0x0fffff00, 0x0fafff00, 0x0fafff00,
0x0faffd00, 0x0faffc04, 0x0ffffc00, 0x3ffffc01,
0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc00,
0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc00,
0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfff7fc00,
0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc01,
0xcffffc00, 0x0fffff00, 0x0ff3ff00, 0x0ff3ff00,
0x0ff3fe00, 0x0ffffc00, 0x3ffffc05, 0xfffffc00,
0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc00,
0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc00,
0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc00,
0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc01,
0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc00,
0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc00,
0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc01,
0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc01
};
volatile immap_t *immap = (immap_t *) CONFIG_SYS_IMMR;
set_lbc_br(3, CONFIG_SYS_BR3_PRELIM);
set_lbc_or(3, CONFIG_SYS_OR3_PRELIM);
/* Program the MAMR. RFEN=0, OP=00, UWPL=1, AM=000, DS=01, G0CL=000,
GPL4=0, RLF=0001, WLF=0001, TLF=0001, MAD=000000
*/
immap->im_lbc.mamr = 0x08404440;
upmconfig(0, UPMATable, sizeof(UPMATable) / sizeof(UPMATable[0]));
puts("UPMA: Configured for compact flash\n");
#endif
return 0;
}
/*
* Miscellaneous late-boot configurations
*
* Make sure the EEPROM has the HRCW correctly programmed.
* Make sure the RTC is correctly programmed.
*
* The MPC8349E-mITX can be configured to load the HRCW from
* EEPROM instead of flash. This is controlled via jumpers
* LGPL0, 1, and 3. Normally, these jumpers are set to 000 (all
* jumpered), but if they're set to 001 or 010, then the HRCW is
* read from the "I2C EEPROM".
*
* This function makes sure that the I2C EEPROM is programmed
* correctly.
*
* If a VSC7385 microcode image is present, then upload it.
*/
int misc_init_r(void)
{
int rc = 0;
#if defined(CONFIG_SYS_I2C)
unsigned int orig_bus = i2c_get_bus_num();
u8 i2c_data;
#ifdef CONFIG_SYS_I2C_RTC_ADDR
u8 ds1339_data[17];
#endif
#ifdef CONFIG_SYS_I2C_EEPROM_ADDR
static u8 eeprom_data[] = /* HRCW data */
{
0xAA, 0x55, 0xAA, /* Preamble */
0x7C, /* ACS=0, BYTE_EN=1111, CONT=1 */
0x02, 0x40, /* RCWL ADDR=0x0_0900 */
(CONFIG_SYS_HRCW_LOW >> 24) & 0xFF,
(CONFIG_SYS_HRCW_LOW >> 16) & 0xFF,
(CONFIG_SYS_HRCW_LOW >> 8) & 0xFF,
CONFIG_SYS_HRCW_LOW & 0xFF,
0x7C, /* ACS=0, BYTE_EN=1111, CONT=1 */
0x02, 0x41, /* RCWH ADDR=0x0_0904 */
(CONFIG_SYS_HRCW_HIGH >> 24) & 0xFF,
(CONFIG_SYS_HRCW_HIGH >> 16) & 0xFF,
(CONFIG_SYS_HRCW_HIGH >> 8) & 0xFF,
CONFIG_SYS_HRCW_HIGH & 0xFF
};
u8 data[sizeof(eeprom_data)];
#endif
printf("Board revision: ");
i2c_set_bus_num(1);
if (i2c_read(CONFIG_SYS_I2C_8574A_ADDR2, 0, 0, &i2c_data, sizeof(i2c_data)) == 0)
printf("%u.%u (PCF8475A)\n", (i2c_data & 0x02) >> 1, i2c_data & 0x01);
else if (i2c_read(CONFIG_SYS_I2C_8574_ADDR2, 0, 0, &i2c_data, sizeof(i2c_data)) == 0)
printf("%u.%u (PCF8475)\n", (i2c_data & 0x02) >> 1, i2c_data & 0x01);
else {
printf("Unknown\n");
rc = 1;
}
#ifdef CONFIG_SYS_I2C_EEPROM_ADDR
i2c_set_bus_num(0);
if (i2c_read(CONFIG_SYS_I2C_EEPROM_ADDR, 0, 2, data, sizeof(data)) == 0) {
if (memcmp(data, eeprom_data, sizeof(data)) != 0) {
if (i2c_write
(CONFIG_SYS_I2C_EEPROM_ADDR, 0, 2, eeprom_data,
sizeof(eeprom_data)) != 0) {
puts("Failure writing the HRCW to EEPROM via I2C.\n");
rc = 1;
}
}
} else {
puts("Failure reading the HRCW from EEPROM via I2C.\n");
rc = 1;
}
#endif
#ifdef CONFIG_SYS_I2C_RTC_ADDR
i2c_set_bus_num(1);
if (i2c_read(CONFIG_SYS_I2C_RTC_ADDR, 0, 1, ds1339_data, sizeof(ds1339_data))
== 0) {
/* Work-around for MPC8349E-mITX bug #13601.
If the RTC does not contain valid register values, the DS1339
Linux driver will not work.
*/
/* Make sure status register bits 6-2 are zero */
ds1339_data[0x0f] &= ~0x7c;
/* Check for a valid day register value */
ds1339_data[0x03] &= ~0xf8;
if (ds1339_data[0x03] == 0) {
ds1339_data[0x03] = 1;
}
/* Check for a valid date register value */
ds1339_data[0x04] &= ~0xc0;
if ((ds1339_data[0x04] == 0) ||
((ds1339_data[0x04] & 0x0f) > 9) ||
(ds1339_data[0x04] >= 0x32)) {
ds1339_data[0x04] = 1;
}
/* Check for a valid month register value */
ds1339_data[0x05] &= ~0x60;
if ((ds1339_data[0x05] == 0) ||
((ds1339_data[0x05] & 0x0f) > 9) ||
((ds1339_data[0x05] >= 0x13)
&& (ds1339_data[0x05] <= 0x19))) {
ds1339_data[0x05] = 1;
}
/* Enable Oscillator and rate select */
ds1339_data[0x0e] = 0x1c;
/* Work-around for MPC8349E-mITX bug #13330.
Ensure that the RTC control register contains the value 0x1c.
This affects SATA performance.
*/
if (i2c_write
(CONFIG_SYS_I2C_RTC_ADDR, 0, 1, ds1339_data,
sizeof(ds1339_data))) {
puts("Failure writing to the RTC via I2C.\n");
rc = 1;
}
} else {
puts("Failure reading from the RTC via I2C.\n");
rc = 1;
}
#endif
i2c_set_bus_num(orig_bus);
#endif
#ifdef CONFIG_VSC7385_IMAGE
if (vsc7385_upload_firmware((void *) CONFIG_VSC7385_IMAGE,
CONFIG_VSC7385_IMAGE_SIZE)) {
puts("Failure uploading VSC7385 microcode.\n");
rc = 1;
}
#endif
return rc;
}
#if defined(CONFIG_OF_BOARD_SETUP)
int ft_board_setup(void *blob, bd_t *bd)
{
ft_cpu_setup(blob, bd);
#ifdef CONFIG_PCI
ft_pci_setup(blob, bd);
#endif
return 0;
}
#endif
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