* Patch by Thomas Frieden, 13 Nov 2002:
Add code for AmigaOne board
(preliminary merge to U-Boot, still WIP)
* Patch by Jon Diekema, 12 Nov 2002:
- Adding URL for IEEE OUI lookup
- Making the autoboot #defines dependent on CONFIG_AUTOBOOT_KEYED
being defined.
- In the CONFIG_EXTRA_ENV_SETTINGS #define, the root-on-initrd and
root-on-nfs macros are designed to switch how the default boot
method gets defined.
diff --git a/board/MAI/AmigaOneG3SE/articiaS.c b/board/MAI/AmigaOneG3SE/articiaS.c
new file mode 100644
index 0000000..af85444
--- /dev/null
+++ b/board/MAI/AmigaOneG3SE/articiaS.c
@@ -0,0 +1,704 @@
+/*
+ * (C) Copyright 2002
+ * Hyperion Entertainment, ThomasF@hyperion-entertainment.com
+ *
+ * See file CREDITS for list of people who contributed to this
+ * 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; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <common.h>
+#include <pci.h>
+#include <asm/processor.h>
+#include "memio.h"
+#include "articiaS.h"
+#include "smbus.h"
+#include "via686.h"
+
+#undef DEBUG
+
+struct dimm_bank {
+ uint8 used; /* Bank is populated */
+ uint32 rows; /* Number of row addresses */
+ uint32 columns; /* Number of column addresses */
+ uint8 registered; /* SIMM is registered */
+ uint8 ecc; /* SIMM has ecc */
+ uint8 burst_len; /* Supported burst lengths */
+ uint32 cas_lat; /* Supported CAS latencies */
+ uint32 cas_used; /* CAS to use (not set by user) */
+ uint32 trcd; /* RAS to CAS latency */
+ uint32 trp; /* Precharge latency */
+ uint32 tclk_hi; /* SDRAM cycle time (highest CAS latency) */
+ uint32 tclk_2hi; /* SDRAM second highest CAS latency */
+ uint32 size; /* Size of bank in bytes */
+ uint8 auto_refresh; /* Module supports auto refresh */
+ uint32 refresh_time; /* Refresh time (in ns) */
+};
+
+
+/*
+** Based in part on the evb64260 code
+*/
+
+/*
+ * translate ns.ns/10 coding of SPD timing values
+ * into 10 ps unit values
+ */
+static inline unsigned short NS10to10PS (unsigned char spd_byte)
+{
+ unsigned short ns, ns10;
+
+ /* isolate upper nibble */
+ ns = (spd_byte >> 4) & 0x0F;
+ /* isolate lower nibble */
+ ns10 = (spd_byte & 0x0F);
+
+ return (ns * 100 + ns10 * 10);
+}
+
+/*
+ * translate ns coding of SPD timing values
+ * into 10 ps unit values
+ */
+static inline unsigned short NSto10PS (unsigned char spd_byte)
+{
+ return (spd_byte * 100);
+}
+
+
+long detect_sdram (uint8 * rom, int dimmNum, struct dimm_bank *banks)
+{
+ int dimm_address = (dimmNum == 0) ? SM_DIMM0_ADDR : SM_DIMM1_ADDR;
+ uint32 busclock = get_bus_freq (0);
+ uint32 memclock = busclock;
+ uint32 tmemclock = 1000000000 / (memclock / 100);
+ uint32 datawidth;
+
+ if (sm_get_data (rom, dimm_address) == 0) {
+ /* Nothing in slot, make both banks empty */
+ debug ("Slot %d: vacant\n", dimmNum);
+ banks[0].used = 0;
+ banks[1].used = 0;
+ return 0;
+ }
+
+ if (rom[2] != 0x04) {
+ debug ("Slot %d: No SDRAM\n", dimmNum);
+ banks[0].used = 0;
+ banks[1].used = 0;
+ return 0;
+ }
+
+ /* Determine number of banks/rows */
+ if (rom[5] == 1) {
+ banks[0].used = 1;
+ banks[1].used = 0;
+ } else {
+ banks[0].used = 1;
+ banks[1].used = 1;
+ }
+
+ /* Determine number of row addresses */
+ if (rom[3] & 0xf0) {
+ /* Different banks sizes */
+ banks[0].rows = rom[3] & 0x0f;
+ banks[1].rows = (rom[3] & 0xf0) >> 4;
+ } else {
+ /* Equal sized banks */
+ banks[0].rows = rom[3] & 0x0f;
+ banks[1].rows = banks[0].rows;
+ }
+
+ /* Determine number of column addresses */
+ if (rom[4] & 0xf0) {
+ /* Different bank sizes */
+ banks[0].columns = rom[4] & 0x0f;
+ banks[1].columns = (rom[4] & 0xf0) >> 4;
+ } else {
+ banks[0].columns = rom[4] & 0x0f;
+ banks[1].columns = banks[0].columns;
+ }
+
+ /* Check Jedec revision, and modify row/column accordingly */
+ if (rom[62] > 0x10) {
+ if (banks[0].rows <= 3)
+ banks[0].rows += 15;
+ if (banks[1].rows <= 3)
+ banks[1].rows += 15;
+ if (banks[0].columns <= 3)
+ banks[0].columns += 15;
+ if (banks[0].columns <= 3)
+ banks[0].columns += 15;
+ }
+
+ /* Check registered/unregisterd */
+ if (rom[21] & 0x12) {
+ banks[0].registered = 1;
+ banks[1].registered = 1;
+ } else {
+ banks[0].registered = 0;
+ banks[1].registered = 0;
+ }
+
+#ifdef CONFIG_ECC
+ /* Check parity/ECC */
+ banks[0].ecc = (rom[11] == 0x02);
+ banks[1].ecc = (rom[11] == 0x02);
+#endif
+
+ /* Find burst lengths supported */
+ banks[0].burst_len = rom[16] & 0x8f;
+ banks[1].burst_len = rom[16] & 0x8f;
+
+ /* Find possible cas latencies */
+ banks[0].cas_lat = rom[18] & 0x7F;
+ banks[1].cas_lat = rom[18] & 0x7F;
+
+ /* RAS/CAS latency */
+ banks[0].trcd = (NSto10PS (rom[29]) + (tmemclock - 1)) / tmemclock;
+ banks[1].trcd = (NSto10PS (rom[29]) + (tmemclock - 1)) / tmemclock;
+
+ /* Precharge latency */
+ banks[0].trp = (NSto10PS (rom[27]) + (tmemclock - 1)) / tmemclock;
+ banks[1].trp = (NSto10PS (rom[27]) + (tmemclock - 1)) / tmemclock;
+
+ /* highest CAS latency */
+ banks[0].tclk_hi = NS10to10PS (rom[9]);
+ banks[1].tclk_hi = NS10to10PS (rom[9]);
+
+ /* second highest CAS latency */
+ banks[0].tclk_2hi = NS10to10PS (rom[23]);
+ banks[1].tclk_2hi = NS10to10PS (rom[23]);
+
+ /* bank sizes */
+ datawidth = rom[13] & 0x7f;
+ banks[0].size =
+ (1L << (banks[0].rows + banks[0].columns)) *
+ /* FIXME datawidth */ 8 * rom[17];
+ if (rom[13] & 0x80)
+ banks[1].size = 2 * banks[0].size;
+ else
+ banks[1].size = (1L << (banks[1].rows + banks[1].columns)) *
+ /* FIXME datawidth */ 8 * rom[17];
+
+ /* Refresh */
+ if (rom[12] & 0x80) {
+ banks[0].auto_refresh = 1;
+ banks[1].auto_refresh = 1;
+ } else {
+ banks[0].auto_refresh = 0;
+ banks[1].auto_refresh = 0;
+ }
+
+ switch (rom[12] & 0x7f) {
+ case 0:
+ banks[0].refresh_time = (1562500 + (tmemclock - 1)) / tmemclock;
+ banks[1].refresh_time = (1562500 + (tmemclock - 1)) / tmemclock;
+ break;
+ case 1:
+ banks[0].refresh_time = (390600 + (tmemclock - 1)) / tmemclock;
+ banks[1].refresh_time = (390600 + (tmemclock - 1)) / tmemclock;
+ break;
+ case 2:
+ banks[0].refresh_time = (781200 + (tmemclock - 1)) / tmemclock;
+ banks[1].refresh_time = (781200 + (tmemclock - 1)) / tmemclock;
+ break;
+ case 3:
+ banks[0].refresh_time = (3125000 + (tmemclock - 1)) / tmemclock;
+ banks[1].refresh_time = (3125000 + (tmemclock - 1)) / tmemclock;
+ break;
+ case 4:
+ banks[0].refresh_time = (6250000 + (tmemclock - 1)) / tmemclock;
+ banks[1].refresh_time = (6250000 + (tmemclock - 1)) / tmemclock;
+ break;
+ case 5:
+ banks[0].refresh_time = (12500000 + (tmemclock - 1)) / tmemclock;
+ banks[1].refresh_time = (12500000 + (tmemclock - 1)) / tmemclock;
+ break;
+ default:
+ banks[0].refresh_time = 0x100; /* Default of Articia S */
+ banks[1].refresh_time = 0x100;
+ break;
+ }
+
+#ifdef DEBUG
+ printf ("\nInformation for SIMM bank %ld:\n", dimmNum);
+ printf ("Number of banks: %ld\n", banks[0].used + banks[1].used);
+ printf ("Number of row addresses: %ld\n", banks[0].rows);
+ printf ("Number of coumns addresses: %ld\n", banks[0].columns);
+ printf ("SIMM is %sregistered\n",
+ banks[0].registered == 0 ? "not " : "");
+#ifdef CONFIG_ECC
+ printf ("SIMM %s ECC\n",
+ banks[0].ecc == 1 ? "supports" : "doesn't support");
+#endif
+ printf ("Supported burst lenghts: %s %s %s %s %s\n",
+ banks[0].burst_len & 0x08 ? "8" : " ",
+ banks[0].burst_len & 0x04 ? "4" : " ",
+ banks[0].burst_len & 0x02 ? "2" : " ",
+ banks[0].burst_len & 0x01 ? "1" : " ",
+ banks[0].burst_len & 0x80 ? "PAGE" : " ");
+ printf ("Supported CAS latencies: %s %s %s\n",
+ banks[0].cas_lat & 0x04 ? "CAS 3" : " ",
+ banks[0].cas_lat & 0x02 ? "CAS 2" : " ",
+ banks[0].cas_lat & 0x01 ? "CAS 1" : " ");
+ printf ("RAS to CAS latency: %ld\n", banks[0].trcd);
+ printf ("Precharge latency: %ld\n", banks[0].trp);
+ printf ("SDRAM highest CAS latency: %ld\n", banks[0].tclk_hi);
+ printf ("SDRAM 2nd highest CAS latency: %ld\n", banks[0].tclk_2hi);
+ printf ("SDRAM data width: %ld\n", datawidth);
+ printf ("Auto Refresh %ssupported\n",
+ banks[0].auto_refresh ? "" : "not ");
+ printf ("Refresh time: %ld clocks\n", banks[0].refresh_time);
+ if (banks[0].used)
+ printf ("Bank 0 size: %ld MB\n", banks[0].size / 1024 / 1024);
+ if (banks[1].used)
+ printf ("Bank 1 size: %ld MB\n", banks[1].size / 1024 / 1024);
+
+ printf ("\n");
+#endif
+
+ sm_term ();
+ return 1;
+}
+
+void select_cas (struct dimm_bank *banks, uint8 fast)
+{
+ if (!banks[0].used) {
+ banks[0].cas_used = 0;
+ banks[0].cas_used = 0;
+ return;
+ }
+
+ if (fast) {
+ /* Search for fast CAS */
+ uint32 i;
+ uint32 c = 0x01;
+
+ for (i = 1; i < 5; i++) {
+ if (banks[0].cas_lat & c) {
+ banks[0].cas_used = i;
+ banks[1].cas_used = i;
+ debug ("Using CAS %d (fast)\n", i);
+ return;
+ }
+ c <<= 1;
+ }
+
+ /* Default to CAS 3 */
+ banks[0].cas_used = 3;
+ banks[1].cas_used = 3;
+ debug ("Using CAS 3 (fast)\n");
+
+ return;
+ } else {
+ /* Search for slow cas */
+ uint32 i;
+ uint32 c = 0x08;
+
+ for (i = 4; i > 1; i--) {
+ if (banks[0].cas_lat & c) {
+ banks[0].cas_used = i;
+ banks[1].cas_used = i;
+ debug ("Using CAS %d (slow)\n", i);
+ return;
+ }
+ c >>= 1;
+ }
+
+ /* Default to CAS 3 */
+ banks[0].cas_used = 3;
+ banks[1].cas_used = 3;
+ debug ("Using CAS 3 (slow)\n");
+
+ return;
+ }
+
+ banks[0].cas_used = 3;
+ banks[1].cas_used = 3;
+ debug ("Using CAS 3\n");
+
+ return;
+}
+
+uint32 get_reg_setting (uint32 banks, uint32 rows, uint32 columns, uint32 size)
+{
+ uint32 i;
+
+ struct RowColumnSize {
+ uint32 banks;
+ uint32 rows;
+ uint32 columns;
+ uint32 size;
+ uint32 register_value;
+ };
+
+ struct RowColumnSize rcs_map[] = {
+ /* Sbk Radr Cadr MB Value */
+ {1, 11, 8, 8, 0x00840f00},
+ {1, 11, 9, 16, 0x00925f00},
+ {1, 11, 10, 32, 0x00a64f00},
+ {2, 12, 8, 32, 0x00c55f00},
+ {2, 12, 9, 64, 0x00d66f00},
+ {2, 12, 10, 128, 0x00e77f00},
+ {2, 12, 11, 256, 0x00ff8f00},
+ {2, 13, 11, 512, 0x00ff9f00},
+ {0, 0, 0, 0, 0x00000000}
+ };
+
+
+ i = 0;
+
+ while (rcs_map[i].banks != 0) {
+ if (rows == rcs_map[i].rows
+ && columns == rcs_map[i].columns
+ && (size / 1024 / 1024) == rcs_map[i].size)
+ return rcs_map[i].register_value;
+
+ i++;
+ }
+
+ return 0;
+}
+
+uint32 burst_to_len (uint32 support)
+{
+ if (support & 0x80)
+ return 0x7;
+ else if (support & 0x8)
+ return 0x3;
+ else if (support & 0x4)
+ return 0x2;
+ else if (support & 0x2)
+ return 0x1;
+ else if (support & 0x1)
+ return 0x0;
+
+ return 0;
+}
+
+long articiaS_ram_init (void)
+{
+ DECLARE_GLOBAL_DATA_PTR;
+
+ register uint32 i;
+ register uint32 value1;
+ register uint32 value2;
+ uint8 rom[128];
+ uint32 burst_len;
+ uint32 burst_support;
+ uint32 total_ram = 0;
+
+ struct dimm_bank banks[4]; /* FIXME: Move to initram */
+ uint32 busclock = get_bus_freq (0);
+ uint32 memclock = busclock;
+ uint32 reg32;
+ uint32 refresh_clocks;
+ uint8 auto_refresh;
+
+ memset (banks, 0, sizeof (struct dimm_bank) * 4);
+
+ detect_sdram (rom, 0, &banks[0]);
+ detect_sdram (rom, 1, &banks[2]);
+
+ for (i = 0; i < 4; i++) {
+ total_ram = total_ram + (banks[i].used * banks[i].size);
+ }
+
+ pci_write_cfg_long (0, 0, GLOBALINFO0, 0x117430c0);
+ pci_write_cfg_long (0, 0, HBUSACR0, 0x1f0100b0);
+ pci_write_cfg_long (0, 0, SRAM_CR, 0x00f12000); /* Note: Might also try 0x00f10000 (original: 0x00f12000) */
+ pci_write_cfg_byte (0, 0, DRAM_RAS_CTL0, 0x3f);
+ pci_write_cfg_byte (0, 0, DRAM_RAS_CTL1, 0x00); /* was: 0x04); */
+ pci_write_cfg_word (0, 0, DRAM_ECC0, 0x2020); /* was: 0x2400); No ECC yet */
+
+ /* FIXME: Move this stuff to seperate function, like setup_dimm_bank */
+ if (banks[0].used) {
+ value1 = get_reg_setting (banks[0].used + banks[1].used,
+ banks[0].rows, banks[0].columns,
+ banks[0].size);
+ } else {
+ value1 = 0;
+ }
+
+ if (banks[1].used) {
+ value2 = get_reg_setting (banks[0].used + banks[1].used,
+ banks[1].rows, banks[1].columns,
+ banks[1].size);
+ } else {
+ value2 = 0;
+ }
+
+ pci_write_cfg_long (0, 0, DIMM0_B0_SCR0, value1);
+ pci_write_cfg_long (0, 0, DIMM0_B1_SCR0, value2);
+
+ debug ("DIMM0_B0_SCR0 = 0x%08x\n", value1);
+ debug ("DIMM0_B1_SCR0 = 0x%08x\n", value2);
+
+ if (banks[2].used) {
+ value1 = get_reg_setting (banks[2].used + banks[3].used,
+ banks[2].rows, banks[2].columns,
+ banks[2].size);
+ } else {
+ value1 = 0;
+ }
+
+ if (banks[3].used) {
+ value2 = get_reg_setting (banks[2].used + banks[3].used,
+ banks[3].rows, banks[3].columns,
+ banks[3].size);
+ } else {
+ value2 = 0;
+ }
+
+ pci_write_cfg_long (0, 0, DIMM1_B2_SCR0, value1);
+ pci_write_cfg_long (0, 0, DIMM1_B3_SCR0, value2);
+
+ debug ("DIMM0_B2_SCR0 = 0x%08x\n", value1);
+ debug ("DIMM0_B3_SCR0 = 0x%08x\n", value2);
+
+ pci_write_cfg_long (0, 0, DIMM2_B4_SCR0, 0);
+ pci_write_cfg_long (0, 0, DIMM2_B5_SCR0, 0);
+ pci_write_cfg_long (0, 0, DIMM3_B6_SCR0, 0);
+ pci_write_cfg_long (0, 0, DIMM3_B7_SCR0, 0);
+
+ /* Determine timing */
+ select_cas (&banks[0], 0);
+ select_cas (&banks[2], 0);
+
+ /* FIXME: What about write recovery */
+ /* Auto refresh Precharge */
+#if 0
+ reg32 = (0x3 << 13) | (0x7 << 10) | ((banks[0].trp - 2) << 8) |
+ /* Write recovery CAS Latency */
+ (0x1 << 6) | (banks[0].cas_used << 4) |
+ /* RAS/CAS latency */
+ ((banks[0].trcd - 1) << 0);
+
+ reg32 |= ((0x3 << 13) | (0x7 << 10) | ((banks[2].trp - 2) << 8) |
+ (0x1 << 6) | (banks[2].cas_used << 4) |
+ ((banks[2].trcd - 1) << 0)) << 16;
+#else
+ if (100000000 == gd->bus_clk)
+ reg32 = 0x71737173;
+ else
+ reg32 = 0x69736973;
+#endif
+ pci_write_cfg_long (0, 0, DIMM0_TCR0, reg32);
+ debug ("DIMM0_TCR0 = 0x%08x\n", reg32);
+
+ /* Write default in DIMM2/3 (not used on A1) */
+ pci_write_cfg_long (0, 0, DIMM2_TCR0, 0x7d737d73);
+
+
+ /* Determine buffered/unbuffered mode for each SIMM. Uses first bank as reference (second, if present, uses the same) */
+ reg32 = pci_read_cfg_long (0, 0, DRAM_GCR0);
+ reg32 &= 0xFF00FFFF;
+
+#if 0
+ if (banks[0].used && banks[0].registered)
+ reg32 |= 0x1 << 16;
+
+ if (banks[2].used && banks[2].registered)
+ reg32 |= 0x1 << 18;
+#else
+ if (banks[0].registered || banks[2].registered)
+ reg32 |= 0x55 << 16;
+#endif
+ pci_write_cfg_long (0, 0, DRAM_GCR0, reg32);
+ debug ("DRAM_GCR0 = 0x%08x\n", reg32);
+
+ /* Determine refresh */
+ refresh_clocks = 0xffffffff;
+ auto_refresh = 1;
+
+ for (i = 0; i < 4; i++) {
+ if (banks[i].used) {
+ if (banks[i].auto_refresh == 0)
+ auto_refresh = 0;
+ if (banks[i].refresh_time < refresh_clocks)
+ refresh_clocks = banks[i].refresh_time;
+ }
+ }
+
+
+#if 1
+ /* It seems this is suggested by the ArticiaS data book */
+ if (100000000 == gd->bus_clk)
+ refresh_clocks = 1561;
+ else
+ refresh_clocks = 2083;
+#endif
+
+
+ debug ("Refresh set to %ld clocks, auto refresh %s\n",
+ refresh_clocks, auto_refresh ? "on" : "off");
+
+ pci_write_cfg_long (0, 0, DRAM_REFRESH0,
+ (1 << 16) | (1 << 15) | (auto_refresh << 12) |
+ (refresh_clocks));
+ debug ("DRAM_REFRESH0 = 0x%08x\n",
+ (1 << 16) | (1 << 15) | (auto_refresh << 12) |
+ (refresh_clocks));
+
+/* pci_write_cfg_long(0, 0, DRAM_REFRESH0, 0x00019400); */
+
+ /* Set mode registers */
+ /* FIXME: For now, set same burst len for all modules. Dunno if that's necessary */
+ /* Find a common burst len */
+ burst_support = 0xff;
+
+ if (banks[0].used)
+ burst_support = banks[0].burst_len;
+ if (banks[1].used)
+ burst_support = banks[1].burst_len;
+ if (banks[2].used)
+ burst_support = banks[2].burst_len;
+ if (banks[3].used)
+ burst_support = banks[3].burst_len;
+
+ /*
+ ** Mode register:
+ ** Bits Use
+ ** 0-2 Burst len
+ ** 3 Burst type (0 = sequential, 1 = interleave)
+ ** 4-6 CAS latency
+ ** 7-8 Operation mode (0 = default, all others invalid)
+ ** 9 Write burst
+ ** 10-11 Reserved
+ **
+ ** Mode register burst table:
+ ** A2 A1 A0 lenght
+ ** 0 0 0 1
+ ** 0 0 1 2
+ ** 0 1 0 4
+ ** 0 1 1 8
+ ** 1 0 0 invalid
+ ** 1 0 1 invalid
+ ** 1 1 0 invalid
+ ** 1 1 1 page (only valid for non-interleaved)
+ */
+
+ burst_len = burst_to_len (burst_support);
+ burst_len = 2; /* FIXME */
+
+ if (banks[0].used) {
+ pci_write_cfg_word (0, 0, DRAM_PCR0,
+ 0x8000 | burst_len | (banks[0].cas_used << 4));
+ debug ("Mode bank 0: 0x%08x\n",
+ 0x8000 | burst_len | (banks[0].cas_used << 4));
+ } else {
+ /* Seems to be needed to disable the bank */
+ pci_write_cfg_word (0, 0, DRAM_PCR0, 0x0000 | 0x032);
+ }
+
+ if (banks[1].used) {
+ pci_write_cfg_word (0, 0, DRAM_PCR0,
+ 0x9000 | burst_len | (banks[1].cas_used << 4));
+ debug ("Mode bank 1: 0x%08x\n",
+ 0x8000 | burst_len | (banks[1].cas_used << 4));
+ } else {
+ /* Seems to be needed to disable the bank */
+ pci_write_cfg_word (0, 0, DRAM_PCR0, 0x1000 | 0x032);
+ }
+
+
+ if (banks[2].used) {
+ pci_write_cfg_word (0, 0, DRAM_PCR0,
+ 0xa000 | burst_len | (banks[2].cas_used << 4));
+ debug ("Mode bank 2: 0x%08x\n",
+ 0x8000 | burst_len | (banks[2].cas_used << 4));
+ } else {
+ /* Seems to be needed to disable the bank */
+ pci_write_cfg_word (0, 0, DRAM_PCR0, 0x2000 | 0x032);
+ }
+
+
+ if (banks[3].used) {
+ pci_write_cfg_word (0, 0, DRAM_PCR0,
+ 0xb000 | burst_len | (banks[3].cas_used << 4));
+ debug ("Mode bank 3: 0x%08x\n",
+ 0x8000 | burst_len | (banks[3].cas_used << 4));
+ } else {
+ /* Seems to be needed to disable the bank */
+ pci_write_cfg_word (0, 0, DRAM_PCR0, 0x3000 | 0x032);
+ }
+
+
+ pci_write_cfg_word (0, 0, 0xba, 0x00);
+
+ return total_ram;
+}
+
+extern int drv_isa_kbd_init (void);
+
+int last_stage_init (void)
+{
+ drv_isa_kbd_init ();
+ return 0;
+}
+
+int overwrite_console (void)
+{
+ return (0);
+}
+
+#define in_8 read_byte
+#define out_8 write_byte
+
+static __inline__ unsigned long get_msr (void)
+{
+ unsigned long msr;
+
+ asm volatile ("mfmsr %0":"=r" (msr):);
+
+ return msr;
+}
+
+static __inline__ void set_msr (unsigned long msr)
+{
+ asm volatile ("mtmsr %0"::"r" (msr));
+}
+
+int board_pre_init (void)
+{
+ unsigned char c_value = 0;
+ unsigned long msr;
+
+ /* Basic init of PS/2 keyboard (needed for some reason)... */
+ /* Ripped from John's code */
+ while ((in_8 ((unsigned char *) 0xfe000064) & 0x02) != 0);
+ out_8 ((unsigned char *) 0xfe000064, 0xaa);
+ while ((in_8 ((unsigned char *) 0xfe000064) & 0x01) == 0);
+ c_value = in_8 ((unsigned char *) 0xfe000060);
+ while ((in_8 ((unsigned char *) 0xfe000064) & 0x02) != 0);
+ out_8 ((unsigned char *) 0xfe000064, 0xab);
+ while ((in_8 ((unsigned char *) 0xfe000064) & 0x01) == 0);
+ c_value = in_8 ((unsigned char *) 0xfe000060);
+ while ((in_8 ((unsigned char *) 0xfe000064) & 0x02) != 0);
+ out_8 ((unsigned char *) 0xfe000064, 0xae);
+/* while ((in_8((unsigned char *)0xfe000064) & 0x01) == 0); */
+/* c_value = in_8((unsigned char *)0xfe000060); */
+
+ /* Enable FPU */
+ msr = get_msr ();
+ set_msr (msr | MSR_FP);
+
+ via_calibrate_bus_freq ();
+
+ return 0;
+}