Here's the chip_enable code for the ALI M1533 and the board_enable for
the Asus P5A, an ALI M1541+M1533 socket 7 motherboard.
It's quite nasty:
It does an SMBUS read/write to a yet unidentified device, i think it is
the superio, but i'm not sure.
The Asus P5A also seriously messes up pci-ids, there is nothing
dependable there, so people who want to use flashrom on this board
should use -m asus:p5a
but it works :)
This is a board i own myself and this has been tested successfully.
Luc Verhaegen.
flashrom: add support for asus p5a (Socket7, ALI based)
* Add support for the ALI M1533 to chipset_enable.c
* Add some SMBUS poking needed for the Asus P5A, to board_enable.c
Since pci subsystem ids are worthless with this board, people will
have to name the board directly.
Signed-off-by: Luc Verhaegen <[EMAIL PROTECTED]>
Index: chipset_enable.c
===================================================================
--- chipset_enable.c (revision 2663)
+++ chipset_enable.c (working copy)
@@ -18,6 +18,19 @@
#include "flash.h"
#include "debug.h"
+static int enable_flash_ali_m1533(struct pci_dev *dev, char *name)
+{
+ uint8_t tmp;
+
+ /* ROM Write enable, 0xFFFC0000-0xFFFDFFFF and
+ 0xFFFE0000-0xFFFFFFFF ROM select enable */
+ tmp = pci_read_byte(dev, 0x47);
+ tmp |= 0x46;
+ pci_write_byte(dev, 0x47, tmp);
+
+ return 0;
+}
+
static int enable_flash_sis630(struct pci_dev *dev, char *name)
{
char b;
@@ -410,6 +423,7 @@
{0x100b, 0x0510, "SC1100", enable_flash_sc1100},
{0x1039, 0x0008, "SIS5595", enable_flash_sis5595},
{0x1022, 0x7468, "AMD8111", enable_flash_amd8111},
+ {0x10B9, 0x1533, "ALI M1533", enable_flash_ali_m1533},
/* this fallthrough looks broken. */
{0x10de, 0x0050, "NVIDIA CK804", enable_flash_ck804}, /* LPC */
{0x10de, 0x0051, "NVIDIA CK804", enable_flash_ck804}, /* Pro */
Index: README
===================================================================
--- README (revision 2663)
+++ README (working copy)
@@ -52,6 +52,7 @@
* IWILL DK8-HTX: use -m iwill:dk8_htx
* agami Aruma: use -m AGAMI:ARUMA
+* Asus P5A: use -m asus:p5a
ROM Layout Support
Index: board_enable.c
===================================================================
--- board_enable.c (revision 2663)
+++ board_enable.c (working copy)
@@ -170,6 +170,83 @@
}
/*
+ * Suited for Asus P5A.
+ *
+ * This is rather nasty code, but there's no way to do this cleanly.
+ * We're basically talking to some unknown device on SMBUS, my guess
+ * is that it is the Winbond W83781D that lives near the DIP BIOS.
+ */
+
+static int board_asus_p5a(const char *name)
+{
+ uint8_t tmp;
+ int i;
+
+#define ASUSP5A_LOOP 5000
+
+ outb(0x00, 0xE807);
+ outb(0xEF, 0xE803);
+
+ outb(0xFF, 0xE800);
+
+ for (i = 0; i < ASUSP5A_LOOP; i++) {
+ outb(0xE1, 0xFF);
+ if (inb(0xE800) & 0x04)
+ break;
+ }
+
+ if (i == ASUSP5A_LOOP) {
+ printf("%s: Unable to contact device.\n", name);
+ return -1;
+ }
+
+ outb(0x20, 0xE801);
+ outb(0x20, 0xE1);
+
+ outb(0xFF, 0xE802);
+
+ for (i = 0; i < ASUSP5A_LOOP; i++) {
+ tmp = inb(0xE800);
+ if (tmp & 0x70)
+ break;
+ }
+
+ if ((i == ASUSP5A_LOOP) || !(tmp & 0x10)) {
+ printf("%s: failed to read device.\n", name);
+ return -1;
+ }
+
+ tmp = inb(0xE804);
+ tmp &= ~0x02;
+
+ outb(0x00, 0xE807);
+ outb(0xEE, 0xE803);
+
+ outb(tmp, 0xE804);
+
+ outb(0xFF, 0xE800);
+ outb(0xE1, 0xFF);
+
+ outb(0x20, 0xE801);
+ outb(0x20, 0xE1);
+
+ outb(0xFF, 0xE802);
+
+ for (i = 0; i < ASUSP5A_LOOP; i++) {
+ tmp = inb(0xE800);
+ if (tmp & 0x70)
+ break;
+ }
+
+ if ((i == ASUSP5A_LOOP) || !(tmp & 0x10)) {
+ printf("%s: failed to write to device.\n", name);
+ return -1;
+ }
+
+ return 0;
+}
+
+/*
* We use 2 sets of ids here, you're free to choose which is which. This
* to provide a very high degree of certainty when matching a board on
* the basis of Subsystem/card ids. As not every vendor handles
@@ -211,7 +288,8 @@
NULL, NULL, "VIA EPIA M/MII/...", board_via_epia_m},
{0x1106, 0x3177, 0x1043, 0x80A1, 0x1106, 0x3205, 0x1043, 0x8118,
NULL, NULL, "ASUS A7V8-MX SE", board_asus_a7v8x_mx},
-
+ {0x10B9, 0x1541, 0x0000, 0x0000, 0x10B9, 0x1533, 0x0000, 0x0000,
+ "asus", "p5a", "Asus P5A", board_asus_p5a},
{0, 0, 0, 0, 0, 0, 0, 0, NULL, NULL} /* Keep this */
};
--
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