28 Jun
2008
28 Jun
'08
11:04 p.m.
See patch. It's a first attempt, but I think we should get this in in small enough step by step improvements.
--
coresystems GmbH • Brahmsstr. 16 • D-79104 Freiburg i. Br.
Tel.: +49 761 7668825 • Fax: +49 761 7664613
Email: info@coresystems.de • http://www.coresystems.de/
Registergericht: Amtsgericht Freiburg • HRB 7656
Geschäftsführer: Stefan Reinauer • Ust-IdNr.: DE245674866
First attempt to clean up SPI probing and create a common
construct: the flash bus.
At some point the flash bus will be part of struct flashchip.
Signed-off-by: Stefan Reinauer stepan@coresystems.de
Index: flash.h
===================================================================
--- flash.h (revision 3393)
+++ flash.h (working copy)
@@ -370,10 +370,18 @@
/* chipset_enable.c */
int chipset_flash_enable(void);
void print_supported_chipsets(void);
-extern int ich7_detected;
-extern int ich9_detected;
-extern void *ich_spibar;
+typedef enum {
+ BUS_TYPE_LPC,
+ BUS_TYPE_ICH7_SPI,
+ BUS_TYPE_ICH9_SPI,
+ BUS_TYPE_IT87XX_SPI,
+ BUS_TYPE_VIA_SPI
+} flashbus_t;
+
+extern flashbus_t flashbus;
+extern void *spibar;
+
/* Physical memory mapping device */
#if defined (__sun) && (defined(__i386) || defined(__amd64))
# define MEM_DEV "/dev/xsvc"
Index: it87spi.c
===================================================================
--- it87spi.c (revision 3393)
+++ it87spi.c (working copy)
@@ -3,6 +3,7 @@
*
* Copyright (C) 2007, 2008 Carl-Daniel Hailfinger
* Copyright (C) 2008 Ronald Hoogenboom ronald@zonnet.nl
+ * Copyright (C) 2008 coresystems GmbH
*
* 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
@@ -112,8 +113,13 @@
int it87xx_probe_spi_flash(const char *name)
{
it8716f_flashport = find_ite_spi_flash_port(ITE_SUPERIO_PORT1);
+
if (!it8716f_flashport)
it8716f_flashport = find_ite_spi_flash_port(ITE_SUPERIO_PORT2);
+
+ if (it8716f_flashport)
+ flashbus = BUS_TYPE_IT87XX_SPI;
+
return (!it8716f_flashport);
}
Index: spi.c
===================================================================
--- spi.c (revision 3393)
+++ spi.c (working copy)
@@ -34,13 +34,15 @@
int spi_command(unsigned int writecnt, unsigned int readcnt, const unsigned char *writearr, unsigned char *readarr)
{
- if (it8716f_flashport)
+ switch (flashbus) {
+ case BUS_TYPE_IT87XX_SPI:
return it8716f_spi_command(writecnt, readcnt, writearr, readarr);
- else if (ich7_detected)
+ case BUS_TYPE_ICH7_SPI:
+ case BUS_TYPE_ICH9_SPI:
return ich_spi_command(writecnt, readcnt, writearr, readarr);
- else if (ich9_detected)
- return ich_spi_command(writecnt, readcnt, writearr, readarr);
- printf_debug("%s called, but no SPI chipset detected\n", __FUNCTION__);
+ default:
+ printf_debug("%s called, but no SPI chipset/strapping detected\n", __FUNCTION__);
+ }
return 1;
}
@@ -299,11 +301,17 @@
void spi_page_program(int block, uint8_t *buf, uint8_t *bios)
{
- if (it8716f_flashport) {
+ switch (flashbus) {
+ case BUS_TYPE_IT87XX_SPI:
it8716f_spi_page_program(block, buf, bios);
- return;
+ break;
+ case BUS_TYPE_ICH7_SPI:
+ case BUS_TYPE_ICH9_SPI:
+ printf_debug("%s called, but not implemented for ICH\n", __FUNCTION__);
+ break;
+ default:
+ printf_debug("%s called, but no SPI chipset/strapping detected\n", __FUNCTION__);
}
- printf_debug("%s called, but no SPI chipset detected\n", __FUNCTION__);
}
/*
@@ -358,25 +366,32 @@
int spi_chip_read(struct flashchip *flash, uint8_t *buf)
{
- if (it8716f_flashport)
+
+ switch (flashbus) {
+ case BUS_TYPE_IT87XX_SPI:
return it8716f_spi_chip_read(flash, buf);
- else if (ich7_detected)
- return ich_spi_read(flash, buf);
- else if (ich9_detected)
+ case BUS_TYPE_ICH7_SPI:
+ case BUS_TYPE_ICH9_SPI:
return ich_spi_read(flash, buf);
- printf_debug("%s called, but no SPI chipset detected\n", __FUNCTION__);
+ default:
+ printf_debug("%s called, but no SPI chipset/strapping detected\n", __FUNCTION__);
+ }
+
return 1;
}
int spi_chip_write(struct flashchip *flash, uint8_t *buf)
{
- if (it8716f_flashport)
+ switch (flashbus) {
+ case BUS_TYPE_IT87XX_SPI:
return it8716f_spi_chip_write(flash, buf);
- else if (ich7_detected)
- return ich_spi_write(flash, buf);
- else if (ich9_detected)
+ case BUS_TYPE_ICH7_SPI:
+ case BUS_TYPE_ICH9_SPI:
return ich_spi_write(flash, buf);
- printf_debug("%s called, but no SPI chipset detected\n", __FUNCTION__);
+ default:
+ printf_debug("%s called, but no SPI chipset/strapping detected\n", __FUNCTION__);
+ }
+
return 1;
}
Index: chipset_enable.c
===================================================================
--- chipset_enable.c (revision 3393)
+++ chipset_enable.c (working copy)
@@ -35,6 +35,17 @@
#include <unistd.h>
#include "flash.h"
+/**
+ * flashrom defaults to LPC flash devices. If a known SPI controller is found
+ * and the SPI strappings are set, this will be overwritten by the probing code.
+ *
+ * Eventually, this will become an array when multiple flash support works.
+ */
+
+flashbus_t flashbus = BUS_TYPE_LPC;
+void *spibar = NULL;
+
+
static int enable_flash_ali_m1533(struct pci_dev *dev, const char *name)
{
uint8_t tmp;
@@ -124,7 +135,7 @@
* Note: Accesses to FFFF0000-FFFFFFFF are always forwarded to ISA.
* Set bit 2: BIOSCS# Write Enable (1=enable, 0=disable).
*/
- new = old | 0x2c4;
+ new = old | 0x02c4;
if (new == old)
return 0;
@@ -185,68 +196,106 @@
return enable_flash_ich(dev, name, 0xdc);
}
-void *ich_spibar = NULL;
+#define ICH_STRAP_RSVD 0x00
+#define ICH_STRAP_SPI 0x01
+#define ICH_STRAP_PCI 0x02
+#define ICH_STRAP_LPC 0x03
-static int enable_flash_ich_dc_spi(struct pci_dev *dev, const char *name, unsigned long spibar)
+static int enable_flash_ich_dc_spi(struct pci_dev *dev, const char *name, int ich_generation)
{
+ int ret, i;
uint8_t old, new, bbs, buc;
+ uint16_t spibar_offset;
uint32_t tmp, gcs;
void *rcrb;
+ static const char *straps_names[] = { "reserved", "SPI", "PCI", "LPC" };
+
+ /* Enable Flash Writes */
+ ret = enable_flash_ich_dc(dev, name);
- /* Read the Root Complex Base Address Register (RCBA) */
- tmp = pci_read_long(dev, 0xf0);
+ /* Get physical address of Root Complex Register Block */
+ tmp = pci_read_long(dev, 0xf0) & 0xffffc000;
+ printf_debug("\nRoot Complex Register Block address = 0x%x\n", tmp);
- /* Calculate the Root Complex Register Block address */
- tmp &= 0xffffc000;
- printf_debug("\nRoot Complex Register Block address = 0x%x\n", tmp);
+ /* Map RCBA to virtual memory */
rcrb = mmap(0, 0x4000, PROT_READ | PROT_WRITE, MAP_SHARED, fd_mem, (off_t)tmp);
if (rcrb == MAP_FAILED) {
perror("Can't mmap memory using " MEM_DEV);
exit(1);
}
- printf_debug("GCS address = 0x%x\n", tmp + 0x3410);
+
gcs = *(volatile uint32_t *)(rcrb + 0x3410);
printf_debug("GCS = 0x%x: ", gcs);
printf_debug("BIOS Interface Lock-Down: %sabled, ",
(gcs & 0x1) ? "en" : "dis");
bbs = (gcs >> 10) & 0x3;
- printf_debug("BOOT BIOS Straps: 0x%x (%s)\n", bbs,
- (bbs == 0x3) ? "LPC" : ((bbs == 0x2) ? "PCI" : "SPI"));
+ printf_debug("BOOT BIOS Straps: 0x%x (%s)\n", bbs, straps_names[bbs]);
buc = *(volatile uint8_t *)(rcrb + 0x3414);
printf_debug("Top Swap : %s\n", (buc & 1)?"enabled (A16 inverted)":"not enabled");
+ if (bbs == ICH_STRAP_LPC) {
+ /* No further SPI initialization required */
+ return ret;
+ }
+
+ switch (ich_generation) {
+ case 7:
+ flashbus = BUS_TYPE_ICH7_SPI;
+ spibar_offset = 0x3020;
+ break;
+ case 8:
+ flashbus = BUS_TYPE_ICH9_SPI;
+ spibar_offset = 0x3020;
+ break;
+ case 9:
+ default: /* Future version might behave the same */
+ flashbus = BUS_TYPE_ICH9_SPI;
+ spibar_offset = 0x3800;
+ break;
+ }
+
/* SPIBAR is at RCRB+0x3020 for ICH[78] and RCRB+0x3800 for ICH9. */
- printf_debug("SPIBAR = 0x%x + 0x%04x\n", tmp, (uint16_t)spibar);
+ printf_debug("SPIBAR = 0x%x + 0x%04x\n", tmp, spibar_offset);
- // Assign Virtual Address
- ich_spibar = rcrb + spibar;
+ /* Assign Virtual Address */
+ spibar = rcrb + spibar_offset;
- if (ich7_detected) {
- int i;
- printf_debug("0x00: 0x%04x (SPIS)\n", *(uint16_t *)(ich_spibar + 0));
- printf_debug("0x02: 0x%04x (SPIC)\n", *(uint16_t *)(ich_spibar + 2));
- printf_debug("0x04: 0x%08x (SPIA)\n", *(uint32_t *)(ich_spibar + 4));
+ switch (flashbus) {
+ case BUS_TYPE_ICH7_SPI:
+ printf_debug("0x00: 0x%04x (SPIS)\n", *(uint16_t *)(spibar + 0));
+ printf_debug("0x02: 0x%04x (SPIC)\n", *(uint16_t *)(spibar + 2));
+ printf_debug("0x04: 0x%08x (SPIA)\n", *(uint32_t *)(spibar + 4));
for (i=0; i < 8; i++) {
int offs;
offs = 8 + (i * 8);
- printf_debug("0x%02x: 0x%08x (SPID%d)\n", offs, *(uint32_t *)(ich_spibar + offs), i);
- printf_debug("0x%02x: 0x%08x (SPID%d+4)\n", offs+4, *(uint32_t *)(ich_spibar + offs +4), i);
+ printf_debug("0x%02x: 0x%08x (SPID%d)\n", offs, *(uint32_t *)(spibar + offs), i);
+ printf_debug("0x%02x: 0x%08x (SPID%d+4)\n", offs+4, *(uint32_t *)(spibar + offs +4), i);
}
- printf_debug("0x50: 0x%08x (BBAR)\n", *(uint32_t *)(ich_spibar + 0x50));
- printf_debug("0x54: 0x%04x (PREOP)\n", *(uint16_t *)(ich_spibar + 0x54));
- printf_debug("0x56: 0x%04x (OPTYPE)\n", *(uint16_t *)(ich_spibar + 0x56));
- printf_debug("0x58: 0x%08x (OPMENU)\n", *(uint32_t *)(ich_spibar + 0x58));
- printf_debug("0x5c: 0x%08x (OPMENU+4)\n", *(uint32_t *)(ich_spibar + 0x5c));
+ printf_debug("0x50: 0x%08x (BBAR)\n", *(uint32_t *)(spibar + 0x50));
+ printf_debug("0x54: 0x%04x (PREOP)\n", *(uint16_t *)(spibar + 0x54));
+ printf_debug("0x56: 0x%04x (OPTYPE)\n", *(uint16_t *)(spibar + 0x56));
+ printf_debug("0x58: 0x%08x (OPMENU)\n", *(uint32_t *)(spibar + 0x58));
+ printf_debug("0x5c: 0x%08x (OPMENU+4)\n", *(uint32_t *)(spibar + 0x5c));
for (i=0; i < 4; i++) {
int offs;
offs = 0x60 + (i * 4);
- printf_debug("0x%02x: 0x%08x (PBR%d)\n", offs, *(uint32_t *)(ich_spibar + offs), i);
+ printf_debug("0x%02x: 0x%08x (PBR%d)\n", offs, *(uint32_t *)(spibar + offs), i);
}
printf_debug("\n");
- if ( (*(uint16_t *)ich_spibar) & (1 << 15)) {
+ if ( (*(uint16_t *)spibar) & (1 << 15)) {
printf("WARNING: SPI Configuration Lockdown activated.\n");
}
+ break;
+ case BUS_TYPE_ICH9_SPI:
+ /* TODO: Add dumping function for ICH8/ICH9, or drop the
+ * whole SPIBAR dumping from chipset_enable.c - There's
+ * inteltool for this task already.
+ */
+ break;
+ default:
+ /* Nothing */
+ break;
}
old = pci_read_byte(dev, 0xdc);
@@ -257,37 +306,30 @@
case 1:
case 2:
printf_debug("prefetching %sabled, caching %sabled, ",
- (new & 0x2) ? "en" : "dis", (new & 0x1) ? "dis" : "en");
+ (new & 0x2) ? "en" : "dis",
+ (new & 0x1) ? "dis" : "en");
break;
default:
printf_debug("invalid prefetching/caching settings, ");
break;
}
- return enable_flash_ich_dc(dev, name);
+
+ return ret;
}
-/* Flag for ICH7 SPI register block */
-int ich7_detected = 0;
-
static int enable_flash_ich7(struct pci_dev *dev, const char *name)
{
- ich7_detected = 1;
- return enable_flash_ich_dc_spi(dev, name, 0x3020);
+ return enable_flash_ich_dc_spi(dev, name, 7);
}
-/* Flag for ICH8/ICH9 SPI register block */
-int ich9_detected = 0;
-
static int enable_flash_ich8(struct pci_dev *dev, const char *name)
{
- ich9_detected = 1;
- return enable_flash_ich_dc_spi(dev, name, 0x3020);
+ return enable_flash_ich_dc_spi(dev, name, 8);
}
static int enable_flash_ich9(struct pci_dev *dev, const char *name)
{
- ich9_detected = 1;
- return enable_flash_ich_dc_spi(dev, name, 0x3800);
+ return enable_flash_ich_dc_spi(dev, name, 9);
}
static int enable_flash_vt823x(struct pci_dev *dev, const char *name)
Index: ichspi.c
===================================================================
--- ichspi.c (revision 3393)
+++ ichspi.c (working copy)
@@ -123,20 +123,20 @@
static inline uint32_t REGREAD32(int X)
{
volatile uint32_t regval;
- regval = *(volatile uint32_t *) ((uint8_t *) ich_spibar + X);
+ regval = *(volatile uint32_t *) ((uint8_t *) spibar + X);
return regval;
}
static inline uint16_t REGREAD16(int X)
{
volatile uint16_t regval;
- regval = *(volatile uint16_t *) ((uint8_t *) ich_spibar + X);
+ regval = *(volatile uint16_t *) ((uint8_t *) spibar + X);
return regval;
}
-#define REGWRITE32(X,Y) (*(uint32_t *)((uint8_t *)ich_spibar+X)=Y)
-#define REGWRITE16(X,Y) (*(uint16_t *)((uint8_t *)ich_spibar+X)=Y)
-#define REGWRITE8(X,Y) (*(uint8_t *)((uint8_t *)ich_spibar+X)=Y)
+#define REGWRITE32(X,Y) (*(uint32_t *)((uint8_t *)spibar+X)=Y)
+#define REGWRITE16(X,Y) (*(uint16_t *)((uint8_t *)spibar+X)=Y)
+#define REGWRITE8(X,Y) (*(uint8_t *)((uint8_t *)spibar+X)=Y)
/* Common SPI functions */
static int program_opcodes(OPCODES * op);
@@ -167,58 +167,50 @@
int program_opcodes(OPCODES * op)
{
uint8_t a;
- uint16_t temp16;
- uint32_t temp32;
+ uint16_t preop, optype;
+ uint32_t opmenu[2];
/* Program Prefix Opcodes */
- temp16 = 0;
+ preop = 0;
/* 0:7 Prefix Opcode 1 */
- temp16 = (op->preop[0]);
+ preop = (op->preop[0]);
/* 8:16 Prefix Opcode 2 */
- temp16 |= ((uint16_t) op->preop[1]) << 8;
- if (ich7_detected) {
- REGWRITE16(ICH7_REG_PREOP, temp16);
- } else if (ich9_detected) {
- REGWRITE16(ICH9_REG_PREOP, temp16);
- }
-
+ preop |= ((uint16_t) op->preop[1]) << 8;
+
/* Program Opcode Types 0 - 7 */
- temp16 = 0;
+ optype = 0;
for (a = 0; a < 8; a++) {
- temp16 |= ((uint16_t) op->opcode[a].spi_type) << (a * 2);
+ optype |= ((uint16_t) op->opcode[a].spi_type) << (a * 2);
}
-
- if (ich7_detected) {
- REGWRITE16(ICH7_REG_OPTYPE, temp16);
- } else if (ich9_detected) {
- REGWRITE16(ICH9_REG_OPTYPE, temp16);
- }
-
-
+
/* Program Allowable Opcodes 0 - 3 */
- temp32 = 0;
+ opmenu[0] = 0;
for (a = 0; a < 4; a++) {
- temp32 |= ((uint32_t) op->opcode[a].opcode) << (a * 8);
+ opmenu[0] |= ((uint32_t) op->opcode[a].opcode) << (a * 8);
}
- if (ich7_detected) {
- REGWRITE32(ICH7_REG_OPMENU, temp32);
- } else if (ich9_detected) {
- REGWRITE32(ICH9_REG_OPMENU, temp32);
- }
-
-
/*Program Allowable Opcodes 4 - 7 */
- temp32 = 0;
+ opmenu[1] = 0;
for (a = 4; a < 8; a++) {
- temp32 |=
- ((uint32_t) op->opcode[a].opcode) << ((a - 4) * 8);
+ opmenu[1] |= ((uint32_t) op->opcode[a].opcode) << ((a - 4) * 8);
}
- if (ich7_detected) {
- REGWRITE32(ICH7_REG_OPMENU + 4, temp32);
- } else if (ich9_detected) {
- REGWRITE32(ICH9_REG_OPMENU + 4, temp32);
+ switch (flashbus) {
+ case BUS_TYPE_ICH7_SPI:
+ REGWRITE16(ICH7_REG_PREOP, preop);
+ REGWRITE16(ICH7_REG_OPTYPE, optype);
+ REGWRITE32(ICH7_REG_OPMENU, opmenu[0]);
+ REGWRITE32(ICH7_REG_OPMENU + 4, opmenu[1]);
+ break;
+ case BUS_TYPE_ICH9_SPI:
+ REGWRITE16(ICH9_REG_PREOP, preop);
+ REGWRITE16(ICH9_REG_OPTYPE, optype);
+ REGWRITE32(ICH9_REG_OPMENU, opmenu[0]);
+ REGWRITE32(ICH9_REG_OPMENU + 4, opmenu[1]);
+ break;
+ default:
+ printf_debug("%s: unsupported chipset\n", __FUNCTION__);
+ return -1;
}
return 0;
@@ -332,6 +324,7 @@
uint8_t datalength, uint8_t * data)
{
int write_cmd = 0;
+ int timeout;
uint32_t temp32;
uint32_t a;
@@ -402,10 +395,13 @@
REGWRITE32(ICH9_REG_SSFS, temp32);
/*wait for cycle complete */
- while ((REGREAD32(ICH9_REG_SSFS) & SSFS_CDS) == 0) {
- /*TODO; Do something that this can't lead into an endless loop. but some
- * commands may cause this to be last more than 30 seconds */
+ timeout = 1000 * 60; // 60s is a looong timeout.
+ while (((REGREAD32(ICH9_REG_SSFS) & SSFS_CDS) == 0) && --timeout) {
+ myusec_delay(1000);
}
+ if (!timeout) {
+ printf_debug("timeout\n");
+ }
if ((REGREAD32(ICH9_REG_SSFS) & SSFS_FCERR) != 0) {
printf_debug("Transaction error!\n");
@@ -430,10 +426,13 @@
static int run_opcode(uint8_t nr, OPCODE op, uint32_t offset,
uint8_t datalength, uint8_t * data)
{
- if (ich7_detected)
+ switch (flashbus) {
+ case BUS_TYPE_ICH7_SPI:
return ich7_run_opcode(nr, op, offset, datalength, data);
- else if (ich9_detected) {
+ case BUS_TYPE_ICH9_SPI:
return ich9_run_opcode(nr, op, offset, datalength, data);
+ default:
+ printf_debug("%s: unsupported chipset\n", __FUNCTION__);
}
/* If we ever get here, something really weird happened */