diff options
Diffstat (limited to 'src/mainboard/lippert/frontrunner-af')
| -rw-r--r-- | src/mainboard/lippert/frontrunner-af/Makefile.inc | 4 | ||||
| -rw-r--r-- | src/mainboard/lippert/frontrunner-af/mainboard.c | 33 | ||||
| -rw-r--r-- | src/mainboard/lippert/frontrunner-af/sema.c | 89 | ||||
| -rw-r--r-- | src/mainboard/lippert/frontrunner-af/sema.h | 23 |
4 files changed, 122 insertions, 27 deletions
diff --git a/src/mainboard/lippert/frontrunner-af/Makefile.inc b/src/mainboard/lippert/frontrunner-af/Makefile.inc index ba56286636..3ea57cd1e3 100644 --- a/src/mainboard/lippert/frontrunner-af/Makefile.inc +++ b/src/mainboard/lippert/frontrunner-af/Makefile.inc @@ -27,3 +27,7 @@ romstage-y += OemCustomize.c ramstage-y += buildOpts.c ramstage-y += BiosCallOuts.c ramstage-y += OemCustomize.c + +# Minimal SEMA watchdog support +romstage-y += sema.c +ramstage-y += sema.c diff --git a/src/mainboard/lippert/frontrunner-af/mainboard.c b/src/mainboard/lippert/frontrunner-af/mainboard.c index a846528f5b..1212764cae 100644 --- a/src/mainboard/lippert/frontrunner-af/mainboard.c +++ b/src/mainboard/lippert/frontrunner-af/mainboard.c @@ -27,6 +27,7 @@ #include "SBPLATFORM.h" #include "OEM.h" /* SMBUS0_BASE_ADDRESS */ #include <southbridge/amd/cimx/sb800/gpio_oem.h> +#include "sema.h" /* Init SIO GPIOs. */ #define SIO_RUNTIME_BASE 0x0E00 @@ -59,28 +60,6 @@ static const u16 sio_init_table[] = { // hi = offset, lo = value 0x5780, // GP65: USB power 4/5 = open drain output }; -/* Write data block to slave on SMBUS0. */ -#define SMB0_STATUS ((SMBUS0_BASE_ADDRESS) + 0) -#define SMB0_CONTROL ((SMBUS0_BASE_ADDRESS) + 2) -#define SMB0_HOSTCMD ((SMBUS0_BASE_ADDRESS) + 3) -#define SMB0_ADDRESS ((SMBUS0_BASE_ADDRESS) + 4) -#define SMB0_DATA0 ((SMBUS0_BASE_ADDRESS) + 5) -#define SMB0_BLOCKDATA ((SMBUS0_BASE_ADDRESS) + 7) -static int smb_write_blk(u8 slave, u8 command, u8 length, const u8 *data) -{ - __outbyte(SMB0_STATUS, 0x1E); // clear error status - __outbyte(SMB0_ADDRESS, slave & ~1); // slave addr + direction = out - __outbyte(SMB0_HOSTCMD, command); // or destination offset - __outbyte(SMB0_DATA0, length); // sent before data - __inbyte(SMB0_CONTROL); // reset block data array - while (length--) - __outbyte(SMB0_BLOCKDATA, *(data++)); - __outbyte(SMB0_CONTROL, 0x54); // execute block write, no IRQ - - while (__inbyte(SMB0_STATUS) == 0x01); // busy, no errors - return __inbyte(SMB0_STATUS) ^ 0x02; // 0x02 = completed, no errors -} - static void init(struct device *dev) { volatile u8 *spi_base; // base addr of Hudson's SPI host controller @@ -126,11 +105,11 @@ static void init(struct device *dev) /* Notify the SMC we're alive and kicking, or after a while it will * effect a power cycle and switch to the alternate BIOS chip. - * Should be done as late as possible. */ - printk(BIOS_INFO, "Sending BIOS alive message\n"); - const u8 i_am_alive[] = { 0x03 }; - if ((i = smb_write_blk(0x50, 0x25, sizeof(i_am_alive), i_am_alive))) - printk(BIOS_ERR, "smb_write_blk failed: %d\n", i); + * Should be done as late as possible. + * Failure here does not matter if watchdog was already disabled, + * by configuration or previous boot, so ignore return value. + */ + sema_send_alive(); printk(BIOS_DEBUG, CONFIG_MAINBOARD_PART_NUMBER " EXIT %s\n", __func__); } diff --git a/src/mainboard/lippert/frontrunner-af/sema.c b/src/mainboard/lippert/frontrunner-af/sema.c new file mode 100644 index 0000000000..3a4994de1d --- /dev/null +++ b/src/mainboard/lippert/frontrunner-af/sema.c @@ -0,0 +1,89 @@ +/* + * This file is part of the coreboot 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; version 2 of the License. + * + * 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. + */ + +#include <stdlib.h> +#include <arch/io.h> +#include <console/console.h> +#include <device/device.h> +#include <delay.h> +#include "OEM.h" /* SMBUS0_BASE_ADDRESS */ + +#include "Porting.h" +#include "AGESA.h" +#include <northbridge/amd/agesa/dimmSpd.h> +#include "sema.h" + +/* Write data block to slave on SMBUS0. */ +#define SMB0_STATUS ((SMBUS0_BASE_ADDRESS) + 0) +#define SMB0_CONTROL ((SMBUS0_BASE_ADDRESS) + 2) +#define SMB0_HOSTCMD ((SMBUS0_BASE_ADDRESS) + 3) +#define SMB0_ADDRESS ((SMBUS0_BASE_ADDRESS) + 4) +#define SMB0_DATA0 ((SMBUS0_BASE_ADDRESS) + 5) +#define SMB0_BLOCKDATA ((SMBUS0_BASE_ADDRESS) + 7) + +static int smb_write_blk(u8 slave, u8 command, u8 length, const u8 *data) +{ + __outbyte(SMB0_STATUS, 0x1E); // clear error status + __outbyte(SMB0_ADDRESS, slave & ~1); // slave addr + direction = out + __outbyte(SMB0_HOSTCMD, command); // or destination offset + __outbyte(SMB0_DATA0, length); // sent before data + __inbyte(SMB0_CONTROL); // reset block data array + while (length--) + __outbyte(SMB0_BLOCKDATA, *(data++)); + __outbyte(SMB0_CONTROL, 0x54); // execute block write, no IRQ + + while (__inbyte(SMB0_STATUS) == 0x01); // busy, no errors + return __inbyte(SMB0_STATUS) ^ 0x02; // 0x02 = completed, no errors +} + +#define RETRY_COUNT 100 + +/* Use of mdelay() here would fail in romstage. */ +static void early_mdelay(int msecs) +{ + while (msecs--) { + int i; + for (i = 0; i < 1000; i++) + inb(0x80); + } +} + +int sema_send_alive(void) +{ + const u8 i_am_alive[] = { 0x03 }; + int i, j = 0; + char one_spd_byte; + + /* Fake read just to setup SMBUS controller. */ + if (ENV_ROMSTAGE) + smbus_readSpd(0xa0, &one_spd_byte, 1); + + /* Notify the SMC we're alive and kicking, or after a while it will + * effect a power cycle and switch to the alternate BIOS chip. + * Should be done as late as possible. */ + + printk(BIOS_CRIT, "Sending BIOS alive message... "); + + do { + i = smb_write_blk(0x50, 0x25, sizeof(i_am_alive), i_am_alive); + early_mdelay(25); + } while ((++j < RETRY_COUNT) && i); + + if (j == RETRY_COUNT) { + printk(BIOS_INFO, "failed\n"); + return -1; + } + printk(BIOS_CRIT, "took %d tries\n", j); + + return 0; +} diff --git a/src/mainboard/lippert/frontrunner-af/sema.h b/src/mainboard/lippert/frontrunner-af/sema.h new file mode 100644 index 0000000000..ea8ee31e4e --- /dev/null +++ b/src/mainboard/lippert/frontrunner-af/sema.h @@ -0,0 +1,23 @@ +/* + * This file is part of the coreboot 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; version 2 of the License. + * + * 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. + */ + +#ifndef __LIPPERT_SEMA_H__ +#define __LIPPERT_SEMA_H__ + +/* Signal SEMA watchdog a successful boot. + * Returns < 0 is SMBus message failed after + * several retries. + */ +int sema_send_alive(void); + +#endif |