diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/mainboard/via/epia/auto.c | 144 | ||||
| -rw-r--r-- | src/northbridge/via/vt8601/raminit.c | 754 | ||||
| -rw-r--r-- | src/northbridge/via/vt8601/raminit.h | 2 |
3 files changed, 457 insertions, 443 deletions
diff --git a/src/mainboard/via/epia/auto.c b/src/mainboard/via/epia/auto.c index 3affa50145..fa83d5c3c1 100644 --- a/src/mainboard/via/epia/auto.c +++ b/src/mainboard/via/epia/auto.c @@ -13,10 +13,11 @@ #include "northbridge/via/vt8601/raminit.h" /* */ -void udelay(int usecs) { - int i; - for(i = 0; i < usecs; i++) - outb(i&0xff, 0x80); +void udelay(int usecs) +{ + int i; + for(i = 0; i < usecs; i++) + outb(i&0xff, 0x80); } #include "lib/delay.c" @@ -40,9 +41,9 @@ static void memreset_setup(void) */ static inline int spd_read_byte(unsigned device, unsigned address) { - unsigned char c; - c = smbus_read_byte(device, address); - return c; + unsigned char c; + c = smbus_read_byte(device, address); + return c; } @@ -52,84 +53,85 @@ static inline int spd_read_byte(unsigned device, unsigned address) #include "sdram/generic_sdram.c" */ -static void -enable_mainboard_devices(void) { - device_t dev; - /* dev 0 for southbridge */ +static void enable_mainboard_devices(void) +{ + device_t dev; + /* dev 0 for southbridge */ - dev = pci_locate_device(PCI_ID(0x1106,0x8231), 0); + dev = pci_locate_device(PCI_ID(0x1106,0x8231), 0); - if (dev == PCI_DEV_INVALID) { - die("Southbridge not found!!!\n"); - } - pci_write_config8(dev, 0x50, 7); - pci_write_config8(dev, 0x51, 0xff); + if (dev == PCI_DEV_INVALID) { + die("Southbridge not found!!!\n"); + } + pci_write_config8(dev, 0x50, 7); + pci_write_config8(dev, 0x51, 0xff); #if 0 - // This early setup switches IDE into compatibility mode before PCI gets - // // a chance to assign I/Os - // movl $CONFIG_ADDR(0, 0x89, 0x42), %eax - // // movb $0x09, %dl - // movb $0x00, %dl - // PCI_WRITE_CONFIG_BYTE - // + // This early setup switches IDE into compatibility mode before PCI gets + // // a chance to assign I/Os + // movl $CONFIG_ADDR(0, 0x89, 0x42), %eax + // // movb $0x09, %dl + // movb $0x00, %dl + // PCI_WRITE_CONFIG_BYTE + // #endif - /* we do this here as in V2, we can not yet do raw operations - * to pci! - */ - dev++; /* ICKY */ - pci_write_config8(dev, 0x42, 0); + /* we do this here as in V2, we can not yet do raw operations + * to pci! + */ + dev++; /* ICKY */ + pci_write_config8(dev, 0x42, 0); } -static void -enable_shadow_ram(void) { - device_t dev = 0; /* no need to look up 0:0.0 */ - unsigned char shadowreg; - /* dev 0 for southbridge */ - shadowreg = pci_read_config8(dev, 0x63); - /* 0xf0000-0xfffff */ - shadowreg |= 0x30; - pci_write_config8(dev, 0x63, shadowreg); +static void enable_shadow_ram(void) +{ + device_t dev = 0; /* no need to look up 0:0.0 */ + unsigned char shadowreg; + /* dev 0 for southbridge */ + shadowreg = pci_read_config8(dev, 0x63); + /* 0xf0000-0xfffff */ + shadowreg |= 0x30; + pci_write_config8(dev, 0x63, shadowreg); } + static void main(void) { - unsigned long x; - /* init_timer();*/ - outb(5, 0x80); - - enable_vt8231_serial(); - enable_mainboard_devices(); - uart_init(); - console_init(); + unsigned long x; + /* init_timer();*/ + outb(5, 0x80); - enable_smbus(); - enable_shadow_ram(); - /* - memreset_setup(); - this is way more generic than we need. - sdram_initialize(sizeof(cpu)/sizeof(cpu[0]), cpu); - */ - sdram_set_registers((const struct mem_controller *) 0); - sdram_set_spd_registers((const struct mem_controller *) 0); - sdram_enable(0, (const struct mem_controller *) 0); - - /* Check all of memory */ + enable_vt8231_serial(); + enable_mainboard_devices(); + uart_init(); + console_init(); + + enable_smbus(); + enable_shadow_ram(); + /* + memreset_setup(); + this is way more generic than we need. + sdram_initialize(sizeof(cpu)/sizeof(cpu[0]), cpu); + */ + sdram_set_registers((const struct mem_controller *) 0); + sdram_set_spd_registers((const struct mem_controller *) 0); + sdram_enable(0, (const struct mem_controller *) 0); + + /* Check all of memory */ #if 0 - ram_check(0x00000000, msr.lo); + ram_check(0x00000000, msr.lo); #endif #if 0 - static const struct { - unsigned long lo, hi; - } check_addrs[] = { - /* Check 16MB of memory @ 0*/ - { 0x00000000, 0x01000000 }, + static const struct { + unsigned long lo, hi; + } check_addrs[] = { + /* Check 16MB of memory @ 0*/ + { 0x00000000, 0x01000000 }, #if TOTAL_CPUS > 1 - /* Check 16MB of memory @ 2GB */ - { 0x80000000, 0x81000000 }, + /* Check 16MB of memory @ 2GB */ + { 0x80000000, 0x81000000 }, #endif - }; - int i; - for(i = 0; i < sizeof(check_addrs)/sizeof(check_addrs[0]); i++) { - ram_check(check_addrs[i].lo, check_addrs[i].hi); - } + }; + int i; + for(i = 0; i < sizeof(check_addrs)/sizeof(check_addrs[0]); i++) { + ram_check(check_addrs[i].lo, check_addrs[i].hi); + } #endif } diff --git a/src/northbridge/via/vt8601/raminit.c b/src/northbridge/via/vt8601/raminit.c index ec52d6e7da..57738e336e 100644 --- a/src/northbridge/via/vt8601/raminit.c +++ b/src/northbridge/via/vt8601/raminit.c @@ -47,424 +47,436 @@ it with the version available from LANL. #define DIMM_CL2 0 #endif -void dimms_read(unsigned long x) { - uint8_t c; - unsigned long eax; - volatile unsigned long y; - eax = x; - for(c = 0; c < 6; c++) { - - print_err("dimms_read: "); - print_err_hex32(eax); - print_err("\r\n"); - y = * (volatile unsigned long *) eax; - eax += 0x10000000; - } +void dimms_read(unsigned long x) +{ + uint8_t c; + unsigned long eax; + volatile unsigned long y; + eax = x; + for(c = 0; c < 6; c++) { + + print_err("dimms_read: "); + print_err_hex32(eax); + print_err("\r\n"); + y = * (volatile unsigned long *) eax; + eax += 0x10000000; + } } -void dimms_write(int x) { - uint8_t c; - unsigned long eax = x; - for(c = 0; c < 6; c++) { - print_err("dimms_write: "); - print_err_hex32(eax); - print_err("\r\n"); - *(volatile unsigned long *) eax = 0; - eax += 0x10000000; - } +void dimms_write(int x) +{ + uint8_t c; + unsigned long eax = x; + for(c = 0; c < 6; c++) { + print_err("dimms_write: "); + print_err_hex32(eax); + print_err("\r\n"); + *(volatile unsigned long *) eax = 0; + eax += 0x10000000; + } } #ifdef DEBUG_SETNORTHB -void setnorthb(device_t north, uint8_t reg, uint8_t val) { - print_err("setnorth: reg "); - print_err_hex8(reg); - print_err(" to "); - print_err_hex8(val); - print_err("\r\n"); - pci_write_config8(north, reg, val); +void setnorthb(device_t north, uint8_t reg, uint8_t val) +{ + print_err("setnorth: reg "); + print_err_hex8(reg); + print_err(" to "); + print_err_hex8(val); + print_err("\r\n"); + pci_write_config8(north, reg, val); } #else #define setnorthb pci_write_config8 #endif void -dumpnorth(device_t north) { - uint8_t r, c; - for(r = 0; r < 256; r += 16) { - print_err_hex8(r); - print_err(":"); - for(c = 0; c < 16; c++) { - print_err_hex8(pci_read_config8(north, r+c)); - print_err(" "); - } - print_err("\r\n"); +dumpnorth(device_t north) +{ + uint8_t r, c; + for(r = 0; r < 256; r += 16) { + print_err_hex8(r); + print_err(":"); + for(c = 0; c < 16; c++) { + print_err_hex8(pci_read_config8(north, r+c)); + print_err(" "); + } + print_err("\r\n"); } } -static void sdram_set_registers(const struct mem_controller *ctrl) { - static const uint16_t raminit_ma_reg_table[] = { - /* Values for MA type register to try */ - 0x0000, 0x8088, 0xe0ee, - 0xffff // end mark - }; - static const unsigned char ramregs[] = {0x5a, 0x5b, 0x5c, 0x5d, 0x5e, 0x5f, - 0x56, 0x57}; - - device_t north = (device_t) 0; - uint8_t c, r; - print_err("vt8601 init starting\n"); - north = pci_locate_device(PCI_ID(0x1106, 0x8601), 0); - north = 0; - print_err_hex32(north); - print_err(" is the north\n"); - print_err_hex16(pci_read_config16(north, 0)); - print_err(" "); - print_err_hex16(pci_read_config16(north, 2)); - print_err("\r\n"); +static void sdram_set_registers(const struct mem_controller *ctrl) +{ + static const uint16_t raminit_ma_reg_table[] = { + /* Values for MA type register to try */ + 0x0000, 0x8088, 0xe0ee, + 0xffff // end mark + }; + static const unsigned char ramregs[] = {0x5a, 0x5b, 0x5c, 0x5d, 0x5e, 0x5f, + 0x56, 0x57}; - /* All we are doing now is setting initial known-good values that will - * be revised later as we read SPD - */ - // memory clk enable. We are not using ECC - pci_write_config8(north,0x78, 0x01); - print_err_hex8(pci_read_config8(north, 0x78)); - // dram control, see the book. + device_t north = (device_t) 0; + uint8_t c, r; + + print_err("vt8601 init starting\n"); + north = pci_locate_device(PCI_ID(0x1106, 0x8601), 0); + north = 0; + print_err_hex32(north); + print_err(" is the north\n"); + print_err_hex16(pci_read_config16(north, 0)); + print_err(" "); + print_err_hex16(pci_read_config16(north, 2)); + print_err("\r\n"); + + /* All we are doing now is setting initial known-good values that will + * be revised later as we read SPD + */ + // memory clk enable. We are not using ECC + pci_write_config8(north,0x78, 0x01); + print_err_hex8(pci_read_config8(north, 0x78)); + // dram control, see the book. #if DIMM_PC133 - pci_write_config8(north,0x68, 0x52); + pci_write_config8(north,0x68, 0x52); #else - pci_write_config8(north,0x68, 0x42); + pci_write_config8(north,0x68, 0x42); #endif - // dram control, see the book. - pci_write_config8(north,0x6B, 0x0c); - // Initial setting, 256MB in each bank, will be rewritten later. - pci_write_config8(north,0x5A, 0x20); - print_err_hex8(pci_read_config8(north, 0x5a)); - pci_write_config8(north,0x5B, 0x40); - pci_write_config8(north,0x5C, 0x60); - pci_write_config8(north,0x5D, 0x80); - pci_write_config8(north,0x5E, 0xA0); - pci_write_config8(north,0x5F, 0xC0); - // It seems we have to take care of these 2 registers as if - // they are bank 6 and 7. - pci_write_config8(north,0x56, 0xC0); - pci_write_config8(north,0x57, 0xC0); - - // SDRAM in all banks - pci_write_config8(north,0x60, 0x3F); - // DRAM timing. I'm suspicious of this - // This is for all banks, 64 is 0,1. 65 is 2,3. 66 is 4,5. - // ras precharge 4T, RAS pulse 5T - // cas2 is 0xd6, cas3 is 0xe6 - // we're also backing off write pulse width to 2T, so result is 0xee + // dram control, see the book. + pci_write_config8(north,0x6B, 0x0c); + // Initial setting, 256MB in each bank, will be rewritten later. + pci_write_config8(north,0x5A, 0x20); + print_err_hex8(pci_read_config8(north, 0x5a)); + pci_write_config8(north,0x5B, 0x40); + pci_write_config8(north,0x5C, 0x60); + pci_write_config8(north,0x5D, 0x80); + pci_write_config8(north,0x5E, 0xA0); + pci_write_config8(north,0x5F, 0xC0); + // It seems we have to take care of these 2 registers as if + // they are bank 6 and 7. + pci_write_config8(north,0x56, 0xC0); + pci_write_config8(north,0x57, 0xC0); + + // SDRAM in all banks + pci_write_config8(north,0x60, 0x3F); + // DRAM timing. I'm suspicious of this + // This is for all banks, 64 is 0,1. 65 is 2,3. 66 is 4,5. + // ras precharge 4T, RAS pulse 5T + // cas2 is 0xd6, cas3 is 0xe6 + // we're also backing off write pulse width to 2T, so result is 0xee #if DIMM_CL2 - pci_write_config8(north,0x64, 0xd4); - pci_write_config8(north,0x65, 0xd4); - pci_write_config8(north,0x66, 0xd4); + pci_write_config8(north,0x64, 0xd4); + pci_write_config8(north,0x65, 0xd4); + pci_write_config8(north,0x66, 0xd4); #else // CL=3 - pci_write_config8(north,0x64, 0xe4); - pci_write_config8(north,0x65, 0xe4); - pci_write_config8(north,0x66, 0xe4); + pci_write_config8(north,0x64, 0xe4); + pci_write_config8(north,0x65, 0xe4); + pci_write_config8(north,0x66, 0xe4); #endif - // dram frequency select. - // enable 4K pages for 64M dram. + // dram frequency select. + // enable 4K pages for 64M dram. #if DIMM_PC133 - pci_write_config8(north,0x69, 0x3c); + pci_write_config8(north,0x69, 0x3c); #else - pci_write_config8(north,0x69, 0xac); + pci_write_config8(north,0x69, 0xac); #endif - /* IMPORTANT -- disable refresh counter */ - // refresh counter, disabled. - pci_write_config8(north,0x6A, 0x00); - + /* IMPORTANT -- disable refresh counter */ + // refresh counter, disabled. + pci_write_config8(north,0x6A, 0x00); + - // clkenable configuration. kevinh FIXME - add precharge - pci_write_config8(north,0x6C, 0x00); - // dram read latch delay of 1 ns, MD drive 8 mA, - // high drive strength on MA[2: 13], we#, cas#, ras# - // As per Cindy Lee, set to 0x37, not 0x57 - pci_write_config8(north,0x6D, 0x7f); + // clkenable configuration. kevinh FIXME - add precharge + pci_write_config8(north,0x6C, 0x00); + // dram read latch delay of 1 ns, MD drive 8 mA, + // high drive strength on MA[2: 13], we#, cas#, ras# + // As per Cindy Lee, set to 0x37, not 0x57 + pci_write_config8(north,0x6D, 0x7f); - /* Initialize all banks at once */ + /* Initialize all banks at once */ } /* slot is the dram slot. Base is the *8M base. */ static unsigned char -do_module_size(unsigned char slot) { /*, unsigned char base) */ - static const unsigned char log2[256] = {[1] = 0, [2] = 1, [4] = 2, [8] = 3, - [16]=4, [32]=5, [64]=6, - [128]=7}; - static const uint8_t ramregs[] = {0x5a, 0x5b, 0x5c, 0x5d, 0x5e, 0x5f, - 0x56, 0x57}; - device_t north = 0; - /* for all the DRAMS, see if they are there and get the size of each - * module. This is just a very early first cut at sizing. - */ - /* we may run out of registers ... */ - unsigned char width, banks, rows, cols, reg; - unsigned char value = 0; - unsigned char module = 0xa1 | (slot << 1); - /* is the module there? if byte 2 is not 4, then we'll assume it - * is useless. - */ - if (smbus_read_byte(module, 2) != 4) - goto done; - - //print_err_hex8(slot); - // print_err(" is SDRAM\n"); - width = smbus_read_byte(module, 6) | (smbus_read_byte(module,7)<<0); - banks = smbus_read_byte(module, 17); - /* we're going to assume symmetric banks. Sorry. */ - cols = smbus_read_byte(module, 4) & 0xf; - rows = smbus_read_byte(module, 3) & 0xf; - /* grand total. You have rows+cols addressing, * times of banks, times - * width of data in bytes*/ - /* do this in terms of address bits. Then subtract 23 from it. - * That might do it. - */ - value = cols + rows + log2[banks] + log2[width]; - value -= 23; - /* now subtract 3 more bits as these are 8-bit bytes */ - value -= 3; - // print_err_hex8(value); - // print_err(" is the # bits for this bank\n"); - /* now put that size into the correct register */ - value = (1 << value); +do_module_size(unsigned char slot /*, unsigned char base) */) +{ + static const unsigned char log2[256] = { + [1] = 0, [2] = 1, [4] = 2, [8] = 3, + [16]=4, [32]=5, [64]=6, + [128]=7 + }; + static const uint8_t ramregs[] = {0x5a, 0x5b, 0x5c, 0x5d, 0x5e, 0x5f, + 0x56, 0x57}; + device_t north = 0; + /* for all the DRAMS, see if they are there and get the size of each + * module. This is just a very early first cut at sizing. + */ + /* we may run out of registers ... */ + unsigned char width, banks, rows, cols, reg; + unsigned char value = 0; + unsigned char module = 0xa1 | (slot << 1); + /* is the module there? if byte 2 is not 4, then we'll assume it + * is useless. + */ + if (smbus_read_byte(module, 2) != 4) + goto done; + + //print_err_hex8(slot); + // print_err(" is SDRAM\n"); + width = smbus_read_byte(module, 6) | (smbus_read_byte(module,7)<<0); + banks = smbus_read_byte(module, 17); + /* we're going to assume symmetric banks. Sorry. */ + cols = smbus_read_byte(module, 4) & 0xf; + rows = smbus_read_byte(module, 3) & 0xf; + /* grand total. You have rows+cols addressing, * times of banks, times + * width of data in bytes*/ + /* do this in terms of address bits. Then subtract 23 from it. + * That might do it. + */ + value = cols + rows + log2[banks] + log2[width]; + value -= 23; + /* now subtract 3 more bits as these are 8-bit bytes */ + value -= 3; + // print_err_hex8(value); + // print_err(" is the # bits for this bank\n"); + /* now put that size into the correct register */ + value = (1 << value); done: - reg = ramregs[slot]; - - // print_err_hex8(value); print_err(" would go into "); - // print_err_hex8(ramregs[reg]); print_err("\n"); - // pci_write_config8(north, ramregs[reg], value); - return value; + reg = ramregs[slot]; + + // print_err_hex8(value); print_err(" would go into "); + // print_err_hex8(ramregs[reg]); print_err("\n"); + // pci_write_config8(north, ramregs[reg], value); + return value; } -static void sdram_set_spd_registers(const struct mem_controller *ctrl) { - #define T133 7 - unsigned char Trp = 1, Tras = 1, casl = 2, val; - unsigned char timing = 0xe4; - /* read Trp */ - val = smbus_read_byte(0xa0, 27); - if (val < 2*T133) - Trp = 1; - val = smbus_read_byte(0xa0, 30); - if (val < 5*T133) - Tras = 0; - val = smbus_read_byte(0xa0, 18); - if (val < 8) - casl = 1; - if (val < 4) - casl = 0; - - val = (Trp << 7) | (Tras << 6) | (casl << 4) | 4; - - print_err_hex8(val); print_err(" is the computed timing\n"); - /* don't set it. Experience shows that this screwy chipset should just - * be run with the most conservative timing. - * pci_write_config8(0, 0x64, val); - */ +static void sdram_set_spd_registers(const struct mem_controller *ctrl) +{ +#define T133 7 + unsigned char Trp = 1, Tras = 1, casl = 2, val; + unsigned char timing = 0xe4; + /* read Trp */ + val = smbus_read_byte(0xa0, 27); + if (val < 2*T133) + Trp = 1; + val = smbus_read_byte(0xa0, 30); + if (val < 5*T133) + Tras = 0; + val = smbus_read_byte(0xa0, 18); + if (val < 8) + casl = 1; + if (val < 4) + casl = 0; + + val = (Trp << 7) | (Tras << 6) | (casl << 4) | 4; + + print_err_hex8(val); print_err(" is the computed timing\n"); + /* don't set it. Experience shows that this screwy chipset should just + * be run with the most conservative timing. + * pci_write_config8(0, 0x64, val); + */ } -static void sdram_enable(int controllers, const struct mem_controller *ctrl) { - unsigned char i; - static const uint16_t raminit_ma_reg_table[] = { - /* Values for MA type register to try */ - 0x0000, 0x8088, 0xe0ee, - 0xffff // end mark - }; - static const uint8_t ramregs[] = {0x5a, 0x5b, 0x5c, 0x5d, 0x5e, 0x5f, - 0x56, 0x57}; - - device_t north = 0; - uint8_t c, r, base; - /* begin to initialize*/ - // I forget why we need this, but we do - dimms_write(0xa55a5aa5); - - /* set NOP*/ - pci_write_config8(north,0x6C, 0x01); - print_err("NOP\r\n"); - /* wait 200us*/ - // You need to do the memory reference. That causes the nop cycle. - dimms_read(0); - udelay(400); - print_err("PRECHARGE\r\n"); - /* set precharge */ - pci_write_config8(north,0x6C, 0x02); - print_err("DUMMY READS\r\n"); - /* dummy reads*/ - dimms_read(0); - udelay(200); - print_err("CBR\r\n"); - /* set CBR*/ - pci_write_config8(north,0x6C, 0x04); +static void sdram_enable(int controllers, const struct mem_controller *ctrl) +{ + unsigned char i; + static const uint16_t raminit_ma_reg_table[] = { + /* Values for MA type register to try */ + 0x0000, 0x8088, 0xe0ee, + 0xffff // end mark + }; + static const uint8_t ramregs[] = { + 0x5a, 0x5b, 0x5c, 0x5d, 0x5e, 0x5f, 0x56, 0x57 + }; + + device_t north = 0; + uint8_t c, r, base; + /* begin to initialize*/ + // I forget why we need this, but we do + dimms_write(0xa55a5aa5); - /* do 8 reads and wait >100us between each - from via*/ - dimms_read(0); - udelay(200); - dimms_read(0); - udelay(200); - dimms_read(0); - udelay(200); - dimms_read(0); - udelay(200); - dimms_read(0); - udelay(200); - dimms_read(0); - udelay(200); - dimms_read(0); - udelay(200); - dimms_read(0); - udelay(200); - print_err("MRS\r\n"); - /* set MRS*/ - pci_write_config8(north,0x6c, 0x03); + /* set NOP*/ + pci_write_config8(north,0x6C, 0x01); + print_err("NOP\r\n"); + /* wait 200us*/ + // You need to do the memory reference. That causes the nop cycle. + dimms_read(0); + udelay(400); + print_err("PRECHARGE\r\n"); + /* set precharge */ + pci_write_config8(north,0x6C, 0x02); + print_err("DUMMY READS\r\n"); + /* dummy reads*/ + dimms_read(0); + udelay(200); + print_err("CBR\r\n"); + /* set CBR*/ + pci_write_config8(north,0x6C, 0x04); + + /* do 8 reads and wait >100us between each - from via*/ + dimms_read(0); + udelay(200); + dimms_read(0); + udelay(200); + dimms_read(0); + udelay(200); + dimms_read(0); + udelay(200); + dimms_read(0); + udelay(200); + dimms_read(0); + udelay(200); + dimms_read(0); + udelay(200); + dimms_read(0); + udelay(200); + print_err("MRS\r\n"); + /* set MRS*/ + pci_write_config8(north,0x6c, 0x03); #if DIMM_CL2 - dimms_read(0x150); + dimms_read(0x150); #else // CL=3 - dimms_read(0x1d0); + dimms_read(0x1d0); #endif - udelay(200); - print_err("NORMAL\r\n"); - /* set to normal mode */ - pci_write_config8(north,0x6C, 0x08); - - dimms_write(0x55aa55aa); - dimms_read(0); - udelay(200); - print_err("set ref. rate\r\n"); - // Set the refresh rate. + udelay(200); + print_err("NORMAL\r\n"); + /* set to normal mode */ + pci_write_config8(north,0x6C, 0x08); + + dimms_write(0x55aa55aa); + dimms_read(0); + udelay(200); + print_err("set ref. rate\r\n"); + // Set the refresh rate. #if DIMM_PC133 - pci_write_config8(north,0x6A, 0x86); + pci_write_config8(north,0x6A, 0x86); #else - pci_write_config8(north,0x6A, 0x65); + pci_write_config8(north,0x6A, 0x65); #endif - print_err("enable multi-page open\r\n"); - // enable multi-page open - pci_write_config8(north,0x6B, 0x0d); - - /* Begin auto-detection - * Find the first bank with DIMM equipped. */ - - /* Maximum possible memory in bank 0, none in other banks. - * Starting from bank 0, we fill 0 in these registers - * until memory is found. */ - pci_write_config8(north,0x5A, 0xff); - pci_write_config8(north,0x5B, 0xff); - pci_write_config8(north,0x5C, 0xff); - pci_write_config8(north,0x5D, 0xff); - pci_write_config8(north,0x5E, 0xff); - pci_write_config8(north,0x5F, 0xff); - pci_write_config8(north,0x56, 0xff); - pci_write_config8(north,0x57, 0xff); - dumpnorth(north); - print_err("MA\r\n"); - for(c = 0; c < 8; c++) { - /* Write different values to 0 and 8, then read from 0. - * If values of address 0 match, we have something there. */ - print_err("write to 0\r\n"); - *(volatile unsigned long *) 0 = 0x12345678; - - /* LEAVE THIS HERE. IT IS ESSENTIAL. OTHERWISE BUFFERING - * WILL FOOL YOU! - */ - print_err("write to 8\r\n"); - *(volatile unsigned long *) 8 = 0x87654321; - - if (*(volatile unsigned long *) 0 != 0x12345678) { - print_err("no memory in this bank\r\n"); - /* No memory in this bank. Tell it to the bridge. */ - pci_write_config8(north,ramregs[c], 0); - } - /* found something */ - { - uint8_t best = 0; - - /* Detect MA mapping type of the bank. */ - - for(r = 0; r < 3; r++) { - volatile unsigned long esi = 0; - volatile unsigned long eax = 0; - pci_write_config8(north,0x58, raminit_ma_reg_table[r]); - - * (volatile unsigned long *) eax = 0; - print_err(" done write to eax\r\n"); - // Write to addresses with only one address bit - // on, from 0x80000000 to 0x00000008 (lower 3 bits - // are ignored, assuming 64-bit bus). Then what - // is read at address 0 is the value written to - // the lowest address where it gets - // wrap-around. That address is either the size of - // the bank, or a missing bit due to incorrect MA - // mapping. - eax = 0x80000000; - while (eax != 4) { - * (volatile unsigned long *) eax = eax; - //print_err_hex32(eax); - outb(eax&0xff, 0x80); - eax >>= 1; + print_err("enable multi-page open\r\n"); + // enable multi-page open + pci_write_config8(north,0x6B, 0x0d); + + /* Begin auto-detection + * Find the first bank with DIMM equipped. */ + + /* Maximum possible memory in bank 0, none in other banks. + * Starting from bank 0, we fill 0 in these registers + * until memory is found. */ + pci_write_config8(north,0x5A, 0xff); + pci_write_config8(north,0x5B, 0xff); + pci_write_config8(north,0x5C, 0xff); + pci_write_config8(north,0x5D, 0xff); + pci_write_config8(north,0x5E, 0xff); + pci_write_config8(north,0x5F, 0xff); + pci_write_config8(north,0x56, 0xff); + pci_write_config8(north,0x57, 0xff); + dumpnorth(north); + print_err("MA\r\n"); + for(c = 0; c < 8; c++) { + /* Write different values to 0 and 8, then read from 0. + * If values of address 0 match, we have something there. */ + print_err("write to 0\r\n"); + *(volatile unsigned long *) 0 = 0x12345678; + + /* LEAVE THIS HERE. IT IS ESSENTIAL. OTHERWISE BUFFERING + * WILL FOOL YOU! + */ + print_err("write to 8\r\n"); + *(volatile unsigned long *) 8 = 0x87654321; + + if (*(volatile unsigned long *) 0 != 0x12345678) { + print_err("no memory in this bank\r\n"); + /* No memory in this bank. Tell it to the bridge. */ + pci_write_config8(north,ramregs[c], 0); + } + /* found something */ + { + uint8_t best = 0; + + /* Detect MA mapping type of the bank. */ + + for(r = 0; r < 3; r++) { + volatile unsigned long esi = 0; + volatile unsigned long eax = 0; + pci_write_config8(north,0x58, raminit_ma_reg_table[r]); + + * (volatile unsigned long *) eax = 0; + print_err(" done write to eax\r\n"); + // Write to addresses with only one address bit + // on, from 0x80000000 to 0x00000008 (lower 3 bits + // are ignored, assuming 64-bit bus). Then what + // is read at address 0 is the value written to + // the lowest address where it gets + // wrap-around. That address is either the size of + // the bank, or a missing bit due to incorrect MA + // mapping. + eax = 0x80000000; + while (eax != 4) { + * (volatile unsigned long *) eax = eax; + //print_err_hex32(eax); + outb(eax&0xff, 0x80); + eax >>= 1; + } + print_err(" done read to eax\r\n"); + eax = * (unsigned long *)0; + /* oh boy ... what is this. + movl 0, %eax + cmpl %eax, %esi + jnc 3f + */ + print_err("eax and esi: "); + print_err_hex32(eax); print_err(" "); + print_err_hex32(esi); print_err("\r\n"); + + if (eax > esi) { /* ??*/ + + // This is the current best MA mapping. + // Save the address and its MA mapping value. + best = r; + esi = eax; + } + } + + pci_write_config8(north,0x58, raminit_ma_reg_table[best]); + print_err("enabled first bank of ram ... ma is "); + print_err_hex8(pci_read_config8(north, 0x58)); + print_err("\r\n"); + } } - print_err(" done read to eax\r\n"); - eax = * (unsigned long *)0; - /* oh boy ... what is this. - movl 0, %eax - cmpl %eax, %esi - jnc 3f - */ - print_err("eax and esi: "); - print_err_hex32(eax); print_err(" "); - print_err_hex32(esi); print_err("\r\n"); - - if (eax > esi) { /* ??*/ - - // This is the current best MA mapping. - // Save the address and its MA mapping value. - best = r; - esi = eax; + base = 0; + /* runs out of variable space. */ + /* this is unrolled and constants used as much as possible to help + * us not run out of registers. + * we'll run out of code space instead :-) + */ + // for(i = 0; i < 8; i++) + base = do_module_size(0); /*, base);*/ + pci_write_config8(north, ramregs[0], base); + base = do_module_size(1); /*, base);*/ + base += pci_read_config8(north, ramregs[0]); + pci_write_config8(north, ramregs[1], base); + /* runs out of code space. */ + for(i = 0; i < 8; i++){ + pci_write_config8(north, ramregs[i], base); + /* + pci_write_config8(north, ramregs[3], base); + pci_write_config8(north, ramregs[4], base); + pci_write_config8(north, ramregs[5], base); + pci_write_config8(north, ramregs[6], base); + pci_write_config8(north, ramregs[7], base); + */ } - } - - pci_write_config8(north,0x58, raminit_ma_reg_table[best]); - print_err("enabled first bank of ram ... ma is "); - print_err_hex8(pci_read_config8(north, 0x58)); - print_err("\r\n"); - } - } - base = 0; - /* runs out of variable space. */ - /* this is unrolled and constants used as much as possible to help - * us not run out of registers. - * we'll run out of code space instead :-) - */ - // for(i = 0; i < 8; i++) - base = do_module_size(0); /*, base);*/ - pci_write_config8(north, ramregs[0], base); - base = do_module_size(1); /*, base);*/ - base += pci_read_config8(north, ramregs[0]); - pci_write_config8(north, ramregs[1], base); - /* runs out of code space. */ - for(i = 0; i < 8; i++){ - pci_write_config8(north, ramregs[i], base); - /* - pci_write_config8(north, ramregs[3], base); - pci_write_config8(north, ramregs[4], base); - pci_write_config8(north, ramregs[5], base); - pci_write_config8(north, ramregs[6], base); - pci_write_config8(north, ramregs[7], base); - */ - } - /* - base = do_module_size(0xa0, base); - base = do_module_size(0xa0, base); - base = do_module_size(0xa0, base); - base = do_module_size(0xa0, base); - base = do_module_size(0xa0, base); - base = do_module_size(0xa0, base);*/ - print_err("vt8601 done\n"); - dumpnorth(north); - udelay(1000); + /* + base = do_module_size(0xa0, base); + base = do_module_size(0xa0, base); + base = do_module_size(0xa0, base); + base = do_module_size(0xa0, base); + base = do_module_size(0xa0, base); + base = do_module_size(0xa0, base);*/ + print_err("vt8601 done\n"); + dumpnorth(north); + udelay(1000); } diff --git a/src/northbridge/via/vt8601/raminit.h b/src/northbridge/via/vt8601/raminit.h index a72535de1d..b6d2339df3 100644 --- a/src/northbridge/via/vt8601/raminit.h +++ b/src/northbridge/via/vt8601/raminit.h @@ -2,7 +2,7 @@ #define RAMINIT_H struct mem_controller { - int empty; + int empty; }; #endif /* RAMINIT_H */ |