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-rw-r--r--src/mainboard/amd/rumba/Config.lb4
-rw-r--r--src/mainboard/amd/rumba/auto.c11
-rw-r--r--src/northbridge/amd/gx2/pll_reset.c82
-rw-r--r--src/northbridge/amd/gx2/raminit.c12
-rw-r--r--src/southbridge/amd/cs5535/cs5535_early_setup.c1
-rw-r--r--src/southbridge/amd/cs5535/cs5535_early_smbus.c26
-rw-r--r--src/southbridge/amd/cs5535/cs5535_smbus.h59
7 files changed, 109 insertions, 86 deletions
diff --git a/src/mainboard/amd/rumba/Config.lb b/src/mainboard/amd/rumba/Config.lb
index 556e3ccf14..f08593143f 100644
--- a/src/mainboard/amd/rumba/Config.lb
+++ b/src/mainboard/amd/rumba/Config.lb
@@ -62,11 +62,11 @@ end
makerule ./auto.E
depends "$(MAINBOARD)/auto.c option_table.h ./romcc"
- action "./romcc -E -mcpu=i386 -O -I$(TOP)/src -I. $(CPPFLAGS) $(MAINBOARD)/auto.c -o $@"
+ action "./romcc -E -mcpu=p2 -O -I$(TOP)/src -I. $(CPPFLAGS) $(MAINBOARD)/auto.c -o $@"
end
makerule ./auto.inc
depends "$(MAINBOARD)/auto.c option_table.h ./romcc"
- action "./romcc -mcpu=i386 -O -I$(TOP)/src -I. $(CPPFLAGS) $(MAINBOARD)/auto.c -o $@"
+ action "./romcc -mcpu=p2 -O -I$(TOP)/src -I. $(CPPFLAGS) $(MAINBOARD)/auto.c -o $@"
end
##
diff --git a/src/mainboard/amd/rumba/auto.c b/src/mainboard/amd/rumba/auto.c
index 744cba17d8..15b3606f0e 100644
--- a/src/mainboard/amd/rumba/auto.c
+++ b/src/mainboard/amd/rumba/auto.c
@@ -18,6 +18,12 @@
#include "southbridge/amd/cs5535/cs5535_early_smbus.c"
#include "southbridge/amd/cs5535/cs5535_early_setup.c"
+
+static inline int spd_read_byte(unsigned device, unsigned address)
+{
+ return smbus_read_byte(device, address);
+}
+
#include "northbridge/amd/gx2/raminit.h"
static void sdram_set_spd_registers(const struct mem_controller *ctrl) {
@@ -33,10 +39,9 @@ static void sdram_set_spd_registers(const struct mem_controller *ctrl) {
msr = rdmsr(0x20000019);
msr.hi = 0x18000108;
msr.lo = 0x696332a3;
- wrmsr(0x20000019, msr);
-
-
+ wrmsr(0x20000019, msr);
}
+
#include "northbridge/amd/gx2/raminit.c"
#include "sdram/generic_sdram.c"
diff --git a/src/northbridge/amd/gx2/pll_reset.c b/src/northbridge/amd/gx2/pll_reset.c
index 43c3ff144d..a32f678176 100644
--- a/src/northbridge/amd/gx2/pll_reset.c
+++ b/src/northbridge/amd/gx2/pll_reset.c
@@ -86,33 +86,38 @@ static const unsigned char fbdiv2plldiv[] = {
49, 40, 19, 59, 32, 54, 35, 0, 41, 60, 55, 0, 61, 0, 0, 0
};
-#if 1
-static void get_memory_speed(void)
+static const unsigned char pci33_sdr_crt [] = {
+ /* FbDIV, VDIV, MDIV CPU/GeodeLink */
+ 12, 2, 4, // 200/100
+ 16, 2, 4, // 266/133
+ 18, 2, 5, // 300/120
+ 20, 2, 5, // 333/133
+ 22, 2, 6, // 366/122
+ 24, 2, 6, // 400/133
+ 26, 2, 6 // 433/144
+};
+
+static const unsigned char pci33_ddr_crt [] = {
+ /* FbDIV, VDIV, MDIV CPU/GeodeLink */
+ 12, 2, 3, // 200/133
+ 16, 2, 3, // 266/177
+ 18, 2, 3, // 300/200
+ 20, 2, 3, // 333/222
+ 22, 2, 3, // 366/244
+ 24, 2, 3, // 400/266
+ 26, 2, 3 // 433/289
+};
+
+static unsigned int get_memory_speed(void)
{
- unsigned char val;
-
- val = do_smbus_read_byte(0x6000, 0xA0, 0);
- print_debug("SPD byte ");
- print_debug_hex8(0);
- print_debug(" = ");
- print_debug_hex8(val);
- print_debug("\r\n");
-
- val = do_smbus_read_byte(0x6000, 0xA0, 1);
- print_debug("SPD byte ");
- print_debug_hex8(1);
- print_debug(" = ");
- print_debug_hex8(val);
- print_debug("\r\n");
-
- val = do_smbus_read_byte(0x6000, 0xA0, 2);
- print_debug("SPD byte ");
- print_debug_hex8(2);
- print_debug(" = ");
- print_debug_hex8(val);
- print_debug("\r\n");
+ unsigned char val, hi, lo;
+
+ val = spd_read_byte(0xA0, 9);
+ hi = (val >> 4) & 0x0f;
+ lo = val & 0x0f;
+
+ return 20000/(hi*10 + lo);
}
-#endif
static void pll_reset(void)
{
@@ -125,14 +130,10 @@ static void pll_reset(void)
print_debug("Cpu core is ");
print_debug_hex32(cpu_core);
print_debug("\n");
- //get_memory_speed();
- //msr = rdmsr(GLCP_SYS_RSTPLL);
- msr = rdmsr(0x4c000014);
- print_debug("4c000014 is ");
- print_debug_hex32(msr.hi); print_debug(":"); print_debug_hex32(msr.lo); print_debug("\n");
- if (msr.lo & (1 << GLCP_SYS_RSTPLL_BYPASS)) {
- print_debug("disable PLL bypass\n\r");
+ msr = rdmsr(GLCP_SYS_RSTPLL);
+ if (msr.lo & (1 << GLCP_SYS_RSTPLL_BYPASS)) {
+#if 0
msr.hi = PLLMSRhi;
msr.lo = PLLMSRlo;
wrmsr(GLCP_SYS_RSTPLL, msr);
@@ -144,6 +145,10 @@ static void pll_reset(void)
msr.lo |= PLLMSRlo2;
wrmsr(GLCP_SYS_RSTPLL,msr);
print_debug("should not be here\n\r");
+#endif
+ print_err("shit");
+ while (1)
+ ;
}
if (msr.lo & GLCP_SYS_RSTPLL_SWFLAGS_MASK) {
@@ -152,25 +157,16 @@ static void pll_reset(void)
return;
}
- print_debug("prgramming PLL\n\r");
-
+ /* get the sysref clock rate */
vdiv = (msr.hi >> GLCP_SYS_RSTPLL_VDIV_SHIFT) & 0x07;
vdiv += 2;
fbdiv = (msr.hi >> GLCP_SYS_RSTPLL_FBDIV_SHIFT) & 0x3f;
fbdiv = fbdiv2plldiv[fbdiv];
-
spll_raw = cpu_core * vdiv;
sysref = spll_raw / fbdiv;
- print_debug("SYSREF/PCI Clock ");
- print_debug_hex32(sysref);
- print_debug("\n\r");
-
+ /* get target memory rate by SPD */
//gliu = get_memory_speed();
- //get_memory_speed();
- //print_debug("Target Memory Clock ");
- //print_debug_hex32(gliu);
- //print_debug("\n\r");
msr.hi = 0x00000019;
msr.lo = 0x06de0378;
diff --git a/src/northbridge/amd/gx2/raminit.c b/src/northbridge/amd/gx2/raminit.c
index a2cc474a3a..f0156c3183 100644
--- a/src/northbridge/amd/gx2/raminit.c
+++ b/src/northbridge/amd/gx2/raminit.c
@@ -4,7 +4,19 @@ static void sdram_set_registers(const struct mem_controller *ctrl)
{
}
+#if 0
+static void sdram_set_spd_registers(const struct mem_controller *ctrl)
+{
+ msr_t mst;
+ unsigned char val;
+
+ /* get module banks per dimm, SPD byte 5 */
+ val = spd_read_byte(0xA0, 5);
+ if (val < 1 || val > 2)
+ print_err("Module banks per dimm");
+}
+#endif
/* Section 6.1.3, LX processor databooks, BIOS Initialization Sequence
* Section 4.1.4, GX/CS5535 GeodeROM Porting guide */
static void sdram_enable(int controllers, const struct mem_controller *ctrl)
diff --git a/src/southbridge/amd/cs5535/cs5535_early_setup.c b/src/southbridge/amd/cs5535/cs5535_early_setup.c
index 6c32498aa9..a1cab08c88 100644
--- a/src/southbridge/amd/cs5535/cs5535_early_setup.c
+++ b/src/southbridge/amd/cs5535/cs5535_early_setup.c
@@ -113,6 +113,5 @@ static int cs5535_early_setup(void)
cs5535_setup_cis_mode();
print_debug("Setup smbus\r\n");
cs5535_enable_smbus();
- //get_memory_speed();
dummy();
}
diff --git a/src/southbridge/amd/cs5535/cs5535_early_smbus.c b/src/southbridge/amd/cs5535/cs5535_early_smbus.c
index adc4c5e090..6ff46338f6 100644
--- a/src/southbridge/amd/cs5535/cs5535_early_smbus.c
+++ b/src/southbridge/amd/cs5535/cs5535_early_smbus.c
@@ -7,6 +7,7 @@ static int cs5535_enable_smbus(void)
{
unsigned char val;
+ /* reset SMBUS controller */
outb(0, SMBUS_IO_BASE + SMB_CTRL2);
/* Set SCL freq and enable SMB controller */
@@ -18,24 +19,11 @@ static int cs5535_enable_smbus(void)
val = inb(SMBUS_IO_BASE + SMB_ADD);
val |= (0xEF | SMB_ADD_SAEN);
outb(val, SMBUS_IO_BASE + SMB_ADD);
+}
-#if 0
- print_debug("SMBUS registers ");
- print_debug_hex8(inb(SMBUS_IO_BASE));
- print_debug(" ");
- print_debug_hex8(inb(SMBUS_IO_BASE + 1));
- print_debug(" ");
- print_debug_hex8(inb(SMBUS_IO_BASE + 2));
- print_debug(" ");
- print_debug_hex8(inb(SMBUS_IO_BASE + 3));
- print_debug(" ");
- print_debug_hex8(inb(SMBUS_IO_BASE + 4));
- print_debug(" ");
- print_debug_hex8(inb(SMBUS_IO_BASE + 5));
- print_debug(" ");
- print_debug_hex8(inb(SMBUS_IO_BASE + 6));
- print_debug("\n\r");
-#endif
+static int smbus_read_byte(unsigned device, unsigned address)
+{
+ return do_smbus_read_byte(SMBUS_IO_BASE, device, address-1);
}
#if 0
@@ -49,10 +37,6 @@ static int smbus_send_byte(unsigned device, unsigned char val)
return do_smbus_send_byte(SMBUS_IO_BASE, device, val);
}
-static int smbus_read_byte(unsigned device, unsigned address)
-{
- return do_smbus_read_byte(SMBUS_IO_BASE, device, address);
-}
static int smbus_write_byte(unsigned device, unsigned address, unsigned char val)
{
diff --git a/src/southbridge/amd/cs5535/cs5535_smbus.h b/src/southbridge/amd/cs5535/cs5535_smbus.h
index 2504f5dbef..9cf55ba29c 100644
--- a/src/southbridge/amd/cs5535/cs5535_smbus.h
+++ b/src/southbridge/amd/cs5535/cs5535_smbus.h
@@ -43,6 +43,8 @@
#define SMBUS_TIMEOUT (100*1000*10)
#define SMBUS_STATUS_MASK 0xfbff
+#define SMBUS_IO_BASE 0x6000
+
static void smbus_delay(void)
{
outb(0x80, 0x80);
@@ -75,6 +77,29 @@ static int smbus_start_condition(unsigned smbus_io_base)
return loops?0:SMBUS_WAIT_UNTIL_READY_TIMEOUT;
}
+static int smbus_check_stop_condition(unsigned smbus_io_base)
+{
+ unsigned char val;
+ unsigned long loops;
+ loops = SMBUS_TIMEOUT;
+ /* check for SDA status */
+ do {
+ smbus_delay();
+ val = inw(smbus_io_base + SMB_CTRL1);
+ if ((val & SMB_CTRL1_STOP) == 0) {
+ break;
+ }
+ } while(--loops);
+ return loops?0:SMBUS_WAIT_UNTIL_READY_TIMEOUT;
+}
+
+static int smbus_stop_condition(unsigned smbus_io_base)
+{
+ unsigned char val;
+ val = inb(smbus_io_base + SMB_CTRL1);
+ outb(SMB_CTRL1_STOP, smbus_io_base + SMB_CTRL1);
+}
+
static int smbus_send_slave_address(unsigned smbus_io_base, unsigned char device)
{
unsigned char val;
@@ -86,8 +111,8 @@ static int smbus_send_slave_address(unsigned smbus_io_base, unsigned char device
/* check for bus conflict and NACK */
val = inb(smbus_io_base + SMB_STS);
- if ( ((val & SMB_STS_BER) != 0) ||
- ((val & SMB_STS_NEGACK) != 0))
+ if (((val & SMB_STS_BER) != 0) ||
+ ((val & SMB_STS_NEGACK) != 0))
return SMBUS_ERROR;
/* check for SDA status */
@@ -112,8 +137,8 @@ static int smbus_send_command(unsigned smbus_io_base, unsigned char command)
/* check for bus conflict and NACK */
val = inb(smbus_io_base + SMB_STS);
- if ( ((val & SMB_STS_BER) != 0) ||
- ((val & SMB_STS_NEGACK) != 0))
+ if (((val & SMB_STS_BER) != 0) ||
+ ((val & SMB_STS_NEGACK) != 0))
return SMBUS_ERROR;
/* check for SDA status */
@@ -129,25 +154,27 @@ static int smbus_send_command(unsigned smbus_io_base, unsigned char command)
static unsigned char do_smbus_read_byte(unsigned smbus_io_base, unsigned char device, unsigned char address)
{
- unsigned char val;
+ unsigned char val, val1;
+
+ smbus_check_stop_condition(smbus_io_base);
- if (smbus_start_condition(smbus_io_base) < 0)
- print_debug("smbus error 1");
+ smbus_start_condition(smbus_io_base);
- if (smbus_send_slave_address(smbus_io_base, device) < 0)
- print_debug("smbus error 2");
+ smbus_send_slave_address(smbus_io_base, device);
- if (smbus_send_command(smbus_io_base, address) < 0)
- print_debug("smbus error 3");
+ smbus_send_command(smbus_io_base, address);
- if (smbus_start_condition(smbus_io_base) < 0)
- print_debug("smbus error 4");
+ smbus_start_condition(smbus_io_base);
- if (smbus_send_slave_address(smbus_io_base, device | 0x01))
- print_debug("smbus error 5");
+ smbus_send_slave_address(smbus_io_base, device | 0x01);
+ /* send NACK to slave */
val = inb(smbus_io_base + SMB_CTRL1);
outb(val | SMB_CTRL1_ACK, smbus_io_base + SMB_CTRL1);
- return inb(smbus_io_base + SMB_SDA);
+ val = inb(smbus_io_base + SMB_SDA);
+
+ //smbus_stop_condition(smbus_io_base);
+
+ return val;
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-09-22 17:17:41 +0000