Author: uwe
Date: 2007-05-28 01:31:31 +0200 (Mon, 28 May 2007)
New Revision: 2701
Modified:
trunk/LinuxBIOSv2/src/mainboard/tyan/s1846/Options.lb
trunk/LinuxBIOSv2/src/mainboard/tyan/s1846/auto.c
trunk/LinuxBIOSv2/src/northbridge/intel/i440bx/northbridge.c
trunk/LinuxBIOSv2/src/northbridge/intel/i440bx/raminit.c
trunk/LinuxBIOSv2/targets/tyan/s1846/Config.lb
Log:
Various 440BX and Tyan S1846 related minor changes and fixes (trivial):
- Only check the RAM from 0 - 640 KB and 768 KB - 1 MB now. That's
available on all boards, regardless of what DIMMs you use.
Tested on the Tyan S1846, works fine.
- Properly set the PAM registers to allow the region from 768 KB - 1 MB
to be used as normal RAM (required for the above).
- Document all of this properly. Add/improve other documentation, too.
- Simplify and document code in northbridge.c.
- Cosmetics and coding style.
Signed-off-by: Uwe Hermann <[EMAIL PROTECTED]>
Acked-by: Uwe Hermann <[EMAIL PROTECTED]>
Modified: trunk/LinuxBIOSv2/src/mainboard/tyan/s1846/Options.lb
===================================================================
--- trunk/LinuxBIOSv2/src/mainboard/tyan/s1846/Options.lb 2007-05-27
21:43:58 UTC (rev 2700)
+++ trunk/LinuxBIOSv2/src/mainboard/tyan/s1846/Options.lb 2007-05-27
23:31:31 UTC (rev 2701)
@@ -60,7 +60,6 @@
##
default HAVE_PIRQ_TABLE=0
default IRQ_SLOT_COUNT=4
-#object irq_tables.o
##
## Build code to export a CMOS option table
Modified: trunk/LinuxBIOSv2/src/mainboard/tyan/s1846/auto.c
===================================================================
--- trunk/LinuxBIOSv2/src/mainboard/tyan/s1846/auto.c 2007-05-27 21:43:58 UTC
(rev 2700)
+++ trunk/LinuxBIOSv2/src/mainboard/tyan/s1846/auto.c 2007-05-27 23:31:31 UTC
(rev 2701)
@@ -31,7 +31,7 @@
#include "ram/ramtest.c"
#include "southbridge/intel/i82371eb/i82371eb_early_smbus.c"
#include "northbridge/intel/i440bx/raminit.h"
-#include "mainboard/bitworks/ims/debug.c" // FIXME
+#include "mainboard/bitworks/ims/debug.c" // FIXME
#include "pc80/udelay_io.c"
#include "lib/delay.c"
#include "superio/nsc/pc87309/pc87309_early_serial.c"
@@ -51,10 +51,8 @@
static void enable_mainboard_devices(void)
{
- device_t dev;
+ device_t dev = pci_locate_device(PCI_ID(0x8086, 0x7110), 0);
- dev = pci_locate_device(PCI_ID(0x8086, 0x7110), 0);
-
if (dev == PCI_DEV_INVALID) {
die("Southbridge not found!\n");
} else {
@@ -66,13 +64,8 @@
{
static const struct mem_controller memctrl[] = {
{
- .d0 = PCI_DEV(0, 0, 0),
- .channel0 = {
- (0xa << 3) | 0,
- (0xa << 3) | 1,
- (0xa << 3) | 2,
- (0xa << 3) | 3,
- },
+ .d0 = PCI_DEV(0, 0, 0),
+ .channel0 = {0x50, 0x51, 0x52, 0x53},
},
};
@@ -98,17 +91,22 @@
/* Check whether RAM is working.
*
- * Do _not_ check the area from 640 KB - 1 MB, as that's not really
- * RAM, but rather reserved for various other things:
+ * Do _not_ check the area from 640 KB - 768 KB, as that's not really
+ * RAM, but rather reserved for the 'Video Buffer Area'.
*
+ * Other stuff in the range from 640 KB - 1 MB:
+ *
* - 640 KB - 768 KB: Video Buffer Area
* - 768 KB - 896 KB: Expansion Area
* - 896 KB - 960 KB: Extended System BIOS Area
* - 960 KB - 1 MB: Memory (BIOS Area) - System BIOS Area
*
- * Trying to check these areas will fail.
+ * Trying to check these areas will usually fail, too. However, you
+ * probably can set the PAM registers of the northbridge to map
+ * those areas to RAM (read/write). In that case you can use the
+ * range from 768 KB - 1 MB as normal RAM, and thus check it here.
*/
- /* TODO: This is currently hardcoded to check 64 MB. */
ram_check(0x00000000, 0x0009ffff); /* 0 - 640 KB */
- ram_check(0x00100000, 0x007c0000); /* 1 MB - 64 MB */
+ ram_check(0x000c0000, 0x00100000); /* 768 KB - 1 MB */
+ // ram_check(0x00100000, 0x007c0000); /* 1 MB - 64 MB */
}
Modified: trunk/LinuxBIOSv2/src/northbridge/intel/i440bx/northbridge.c
===================================================================
--- trunk/LinuxBIOSv2/src/northbridge/intel/i440bx/northbridge.c
2007-05-27 21:43:58 UTC (rev 2700)
+++ trunk/LinuxBIOSv2/src/northbridge/intel/i440bx/northbridge.c
2007-05-27 23:31:31 UTC (rev 2701)
@@ -92,44 +92,41 @@
static void pci_domain_set_resources(device_t dev)
{
device_t mc_dev;
- uint32_t pci_tolm;
+ uint32_t pci_tolm;
- pci_tolm = find_pci_tolm(&dev->link[0]);
+ pci_tolm = find_pci_tolm(&dev->link[0]);
mc_dev = dev->link[0].children;
if (mc_dev) {
- /* Figure out which areas are/should be occupied by RAM.
- * This is all computed in kilobytes and converted to/from
- * the memory controller right at the edges.
- * Having different variables in different units is
- * too confusing to get right. Kilobytes are good up to
- * 4 Terabytes of RAM...
- */
uint16_t tolm_r;
unsigned long tomk, tolmk;
int idx;
- /* Get the value of the highest DRB. This tells the end of
- * the physical memory. The units are ticks of 8MB
- * i.e. 1 means 8MB.
+ /* Figure out which areas are/should be occupied by RAM. The
+ * value of the highest DRB denotes the end of the physical
+ * memory (in units of 8MB).
*/
- tomk = ((unsigned long)pci_read_config8(mc_dev, DRB7)) << 13;
- printk_debug("Setting RAM size to %d MB\n", tomk >> 10);
+ tomk = ((unsigned long)pci_read_config8(mc_dev, DRB7));
- /* Compute the top of Low memory */
- tolmk = pci_tolm >> 10;
+ /* Convert to KB. */
+ tomk *= (8 * 1024);
+
+ printk_debug("Setting RAM size to %d MB\n", tomk / 1024);
+
+ /* Compute the top of low memory. */
+ tolmk = pci_tolm / 1024;
+
if (tolmk >= tomk) {
- /* The PCI hole does does not overlap the memory.
- */
+ /* The PCI hole does does not overlap the memory. */
tolmk = tomk;
}
- /* Report the memory regions */
+ /* Report the memory regions. */
idx = 10;
ram_resource(dev, idx++, 0, 640);
- // ram_resource(dev, idx++, 768, tolmk - 768);
- ram_resource(dev, idx++, 1024, tolmk - 1024);
+ ram_resource(dev, idx++, 768, tolmk - 768);
}
+
assign_resources(&dev->link[0]);
}
@@ -179,6 +176,6 @@
}
struct chip_operations northbridge_intel_i440bx_ops = {
- CHIP_NAME("Intel 440BX Northbridge")
+ CHIP_NAME("Intel 82443BX (440BX) Northbridge")
.enable_dev = enable_dev,
};
Modified: trunk/LinuxBIOSv2/src/northbridge/intel/i440bx/raminit.c
===================================================================
--- trunk/LinuxBIOSv2/src/northbridge/intel/i440bx/raminit.c 2007-05-27
21:43:58 UTC (rev 2700)
+++ trunk/LinuxBIOSv2/src/northbridge/intel/i440bx/raminit.c 2007-05-27
23:31:31 UTC (rev 2701)
@@ -69,7 +69,7 @@
/* Table format: register, bitmask, value. */
static const long register_values[] = {
/* NBXCFG - NBX Configuration Register
- * 0x50
+ * 0x50 - 0x53
*
* [31:24] SDRAM Row Without ECC
* 0 = ECC components are populated in this row
@@ -158,6 +158,7 @@
/*
* PAM[6:0] - Programmable Attribute Map Registers
+ * 0x59 - 0x5f
*
* 0x59 [3:0] Reserved
* 0x59 [5:4] 0xF0000 - 0xFFFFF BIOS area
@@ -181,13 +182,13 @@
* 11 = Read/Write (all access goes to DRAM)
*/
// TODO
- PAM0, 0x00000000, 0x00,
- PAM1, 0x00000000, 0x00,
- PAM2, 0x00000000, 0x00,
- PAM3, 0x00000000, 0x00,
- PAM4, 0x00000000, 0x00,
- PAM5, 0x00000000, 0x00,
- PAM6, 0x00000000, 0x00,
+ PAM0, 0x00, 0x00,
+ PAM1, 0x00, 0x00,
+ PAM2, 0x00, 0x00,
+ PAM3, 0x00, 0x00,
+ PAM4, 0x00, 0x00,
+ PAM5, 0x00, 0x00,
+ PAM6, 0x00, 0x00,
/* DRB[0:7] - DRAM Row Boundary Registers
* 0x60 - 0x67
@@ -204,7 +205,7 @@
* 0x66 DRB6 = Total memory in row0+1+2+3+4+5+6 (in 8 MB)
* 0x67 DRB7 = Total memory in row0+1+2+3+4+5+6+7 (in 8 MB)
*/
- // TODO
+ /* Set the DRBs to zero for now, this will be fixed later. */
DRB0, 0x00, 0x00,
DRB1, 0x00, 0x00,
DRB2, 0x00, 0x00,
@@ -424,7 +425,7 @@
max = sizeof(register_values) / sizeof(register_values[0]);
- /* Set registers as specified in the register_values array. */
+ /* Set registers as specified in the register_values[] array. */
for (i = 0; i < max; i += 3) {
reg = pci_read_config32(ctrl->d0, register_values[i]);
reg &= register_values[i + 1];
@@ -448,7 +449,21 @@
{
/* TODO: Don't hardcode the values here, get info via SPD. */
+ /* Map all legacy regions to RAM (read/write). This is required if
+ * you want to use the RAM area from 768 KB - 1 MB. If the PAM
+ * registers are not set here appropriately, the RAM in that region
+ * will not be accessible, thus a RAM check of it will also fail.
+ */
+ pci_write_config8(ctrl->d0, PAM0, 0x30);
+ pci_write_config8(ctrl->d0, PAM1, 0x33);
+ pci_write_config8(ctrl->d0, PAM2, 0x33);
+ pci_write_config8(ctrl->d0, PAM3, 0x33);
+ pci_write_config8(ctrl->d0, PAM4, 0x33);
+ pci_write_config8(ctrl->d0, PAM5, 0x33);
+ pci_write_config8(ctrl->d0, PAM6, 0x33);
+
/* TODO: Set DRB0-DRB7. */
+ /* Currently this is hardcoded to one 64 MB DIMM in slot 0. */
pci_write_config8(ctrl->d0, DRB0, 0x08);
pci_write_config8(ctrl->d0, DRB1, 0x08);
pci_write_config8(ctrl->d0, DRB2, 0x08);
Modified: trunk/LinuxBIOSv2/targets/tyan/s1846/Config.lb
===================================================================
--- trunk/LinuxBIOSv2/targets/tyan/s1846/Config.lb 2007-05-27 21:43:58 UTC
(rev 2700)
+++ trunk/LinuxBIOSv2/targets/tyan/s1846/Config.lb 2007-05-27 23:31:31 UTC
(rev 2701)
@@ -22,10 +22,11 @@
mainboard tyan/s1846
option ROM_SIZE = 256 * 1024
+# option FALLBACK_SIZE = 256 * 1024
romimage "normal"
option USE_FALLBACK_IMAGE = 0
- option ROM_IMAGE_SIZE=0x0e000
+ option ROM_IMAGE_SIZE = 56 * 1024
option LINUXBIOS_EXTRA_VERSION = ".0Normal"
payload /tmp/filo.elf
# payload /tmp/memtest
@@ -33,7 +34,7 @@
romimage "fallback"
option USE_FALLBACK_IMAGE = 1
- option ROM_IMAGE_SIZE=0x0e000
+ option ROM_IMAGE_SIZE = 56 * 1024
option LINUXBIOS_EXTRA_VERSION = ".0Fallback"
payload /tmp/filo.elf
# payload /tmp/memtest
--
linuxbios mailing list
[email protected]
http://www.linuxbios.org/mailman/listinfo/linuxbios
