sravan/system76-coreboot
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Intel e7505: renames only

Browse Source 
Drop maybe-prefix in registers and tables.
Have a name in place of PCI_DEV(x,y,z) to avoid confusion.

Change-Id: I88f51b50d7fd83294aa14455a83418630e1bab85
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: http://review.coreboot.org/882
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
This commit is contained in:
Kyösti Mälkki
2012-04-10 16:11:53 +03:00
committed by Stefan Reinauer
parent 05758bd817
commit 5bd271b9fa
3 changed files with 178 additions and 168 deletions
Download Patch File Download Diff File Expand all files Collapse all files

266
src/northbridge/intel/e7505/raminit.c
View File

@@ -30,7 +30,7 @@ Definitions:
#define RAM_DEBUG_MESSAGE(x) print_debug(x)
#define RAM_DEBUG_HEX32(x) print_debug_hex32(x)
#define RAM_DEBUG_HEX8(x) print_debug_hex8(x)
#define DUMPNORTH() dump_pci_device(PCI_DEV(0, 0, 0))
#define DUMPNORTH() dump_pci_device(MCHDEV)
#else
#define RAM_DEBUG_MESSAGE(x)
#define RAM_DEBUG_HEX32(x)
@@ -41,6 +41,10 @@ Definitions:
#define E7501_SDRAM_MODE (SDRAM_BURST_INTERLEAVED | SDRAM_BURST_4)
#define SPD_ERROR "Error reading SPD info\n"
#define MCHDEV PCI_DEV(0,0,0)
#define RASDEV PCI_DEV(0,0,1)
#define D060DEV PCI_DEV(0,6,0)
// NOTE: This used to be 0x100000.
// That doesn't work on systems where A20M# is asserted, because
// attempts to access 0x1000NN end up accessing 0x0000NN.
@@ -438,20 +442,20 @@ static const long constant_register_values[] = {
/* DDR RECOMP tables */
#if 0
// Slew table for 1x drive?
static const uint32_t maybe_1x_slew_table[] = {
static const uint32_t 1x_slew_table[] = {
0x44332211, 0xc9776655, 0xffffffff, 0xffffffff,
0x22111111, 0x55444332, 0xfffca876, 0xffffffff,
};
#endif
// Slew table for 2x drive?
static const uint32_t maybe_2x_slew_table[] = {
static const uint32_t slew_2x[] = {
0x00000000, 0x76543210, 0xffffeca8, 0xffffffff,
0x21000000, 0xa8765432, 0xffffffec, 0xffffffff,
};
// Pull Up / Pull Down offset table, if analogous to IXP2800?
static const uint32_t maybe_pull_updown_offset_table[] = {
static const uint32_t pull_updown_offset_table[] = {
0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff,
0x88888888, 0x88888888, 0x88888888, 0x88888888,
};
@@ -494,17 +498,17 @@ static void ram_handle_d060_1(void)
{
uint32_t dword;
dword = pci_read_config32(PCI_DEV(0,0,0), MAYBE_MCHTST);
dword = pci_read_config32(MCHDEV, MCHTST);
dword |= 0x02;
pci_write_config32(PCI_DEV(0,0,0), MAYBE_MCHTST, dword);
pci_write_config32(MCHDEV, MCHTST, dword);
dword = pci_read_config32(PCI_DEV(0,6,0), 0xf0);
dword = pci_read_config32(D060DEV, 0xf0);
dword |= 0x04;
pci_write_config32(PCI_DEV(0,6,0), 0xf0, dword);
pci_write_config32(D060DEV, 0xf0, dword);
dword = pci_read_config32(PCI_DEV(0,0,0), MAYBE_MCHTST);
dword = pci_read_config32(MCHDEV, MCHTST);
dword &= ~0x02;
pci_write_config32(PCI_DEV(0,0,0), MAYBE_MCHTST, dword);
pci_write_config32(MCHDEV, MCHTST, dword);
}
/**
@@ -515,19 +519,19 @@ static void ram_handle_d060_2(void)
uint32_t dword;
uint8_t revision;
revision = pci_read_config8(PCI_DEV(0,0,0), 0x08);
revision = pci_read_config8(MCHDEV, 0x08);
if (revision >= 3) {
dword = pci_read_config32(PCI_DEV(0,0,0), MAYBE_MCHTST);
dword = pci_read_config32(MCHDEV, MCHTST);
dword |= 0x02;
pci_write_config32(PCI_DEV(0,0,0), MAYBE_MCHTST, dword);
pci_write_config32(MCHDEV, MCHTST, dword);
dword = pci_read_config32(PCI_DEV(0,6,0), 0xf0);
dword = pci_read_config32(D060DEV, 0xf0);
dword |= 0x18000000;
pci_write_config32(PCI_DEV(0,6,0), 0xf0, dword);
pci_write_config32(D060DEV, 0xf0, dword);
dword = pci_read_config32(PCI_DEV(0,0,0), MAYBE_MCHTST);
dword = pci_read_config32(MCHDEV, MCHTST);
dword &= ~0x02;
pci_write_config32(PCI_DEV(0,0,0), MAYBE_MCHTST, dword);
pci_write_config32(MCHDEV, MCHTST, dword);
}
}
@@ -902,10 +906,10 @@ static void do_ram_command(uint8_t command, uint16_t jedec_mode_bits)
uint8_t i;
// Configure the RAM command
dram_controller_mode = pci_read_config32(PCI_DEV(0, 0, 0), DRC);
dram_controller_mode = pci_read_config32(MCHDEV, DRC);
dram_controller_mode &= 0xFFFFFF8F;
dram_controller_mode |= command;
pci_write_config32(PCI_DEV(0, 0, 0), DRC, dram_controller_mode);
pci_write_config32(MCHDEV, DRC, dram_controller_mode);
// RAM_COMMAND_NORMAL is an exception.
// It affects only the memory controller and does not need to be "sent" to the DIMMs.
@@ -935,7 +939,7 @@ static void do_ram_command(uint8_t command, uint16_t jedec_mode_bits)
for (i = 0; i < (MAX_NUM_CHANNELS * MAX_DIMM_SOCKETS_PER_CHANNEL); ++i) {
uint8_t dimm_end_64M_multiple = pci_read_config8(PCI_DEV(0, 0, 0), DRB_ROW_0 + i);
uint8_t dimm_end_64M_multiple = pci_read_config8(MCHDEV, DRB_ROW_0 + i);
if (dimm_end_64M_multiple > dimm_start_64M_multiple) {
dimm_start_address &= 0x3ffffff;
@@ -962,7 +966,7 @@ static void set_ram_mode(uint16_t jedec_mode_bits)
ASSERT(!(jedec_mode_bits & SDRAM_CAS_MASK));
uint32_t dram_cas_latency =
pci_read_config32(PCI_DEV(0, 0, 0), DRT) & DRT_CAS_MASK;
pci_read_config32(MCHDEV, DRT) & DRT_CAS_MASK;
switch (dram_cas_latency) {
case DRT_CAS_2_5:
@@ -1024,7 +1028,7 @@ static uint8_t configure_dimm_row_boundaries(struct dimm_size dimm_log2_num_bits
total_dram_64M_multiple += (1 << (dimm_log2_num_bits.side1 - 29));
// Configure the boundary address for the row on side 1
pci_write_config8(PCI_DEV(0, 0, 0), DRB_ROW_0 + (dimm_index << 1),
pci_write_config8(MCHDEV, DRB_ROW_0 + (dimm_index << 1),
total_dram_64M_multiple);
// If the DIMMs are double-sided, add the capacity of side 2 this DIMM pair
@@ -1034,16 +1038,16 @@ static uint8_t configure_dimm_row_boundaries(struct dimm_size dimm_log2_num_bits
(1 << (dimm_log2_num_bits.side2 - 29));
// Configure the boundary address for the row (if any) on side 2
pci_write_config8(PCI_DEV(0, 0, 0), DRB_ROW_1 + (dimm_index << 1),
pci_write_config8(MCHDEV, DRB_ROW_1 + (dimm_index << 1),
total_dram_64M_multiple);
// Update boundaries for rows subsequent to these.
// These settings will be overridden by a subsequent call if a populated physical slot exists
for (i = dimm_index + 1; i < MAX_DIMM_SOCKETS_PER_CHANNEL; i++) {
pci_write_config8(PCI_DEV(0, 0, 0), DRB_ROW_0 + (i << 1),
pci_write_config8(MCHDEV, DRB_ROW_0 + (i << 1),
total_dram_64M_multiple);
pci_write_config8(PCI_DEV(0, 0, 0), DRB_ROW_1 + (i << 1),
pci_write_config8(MCHDEV, DRB_ROW_1 + (i << 1),
total_dram_64M_multiple);
}
@@ -1068,8 +1072,8 @@ static void configure_e7501_ram_addresses(const struct mem_controller
// Configure the E7501's DRAM row boundaries
// Start by zeroing out the temporary initial configuration
pci_write_config32(PCI_DEV(0, 0, 0), DRB_ROW_0, 0);
pci_write_config32(PCI_DEV(0, 0, 0), DRB_ROW_4, 0);
pci_write_config32(MCHDEV, DRB_ROW_0, 0);
pci_write_config32(MCHDEV, DRB_ROW_4, 0);
for (i = 0; i < MAX_DIMM_SOCKETS_PER_CHANNEL; i++) {
@@ -1127,7 +1131,7 @@ static void configure_e7501_ram_addresses(const struct mem_controller
uint16_t top_of_low_memory =
total_dram_128M_multiple << 11;
pci_write_config16(PCI_DEV(0, 0, 0), TOLM,
pci_write_config16(MCHDEV, TOLM,
top_of_low_memory);
} else {
@@ -1140,7 +1144,7 @@ static void configure_e7501_ram_addresses(const struct mem_controller
// Put TOLM at 3 GB
pci_write_config16(PCI_DEV(0, 0, 0), TOLM, 0xc000);
pci_write_config16(MCHDEV, TOLM, 0xc000);
// Define a remap window to make the RAM that would appear from 3 GB - 4 GB
// visible just beyond 4 GB or the end of physical memory, whichever is larger
@@ -1154,9 +1158,9 @@ static void configure_e7501_ram_addresses(const struct mem_controller
0x40 + (total_dram_64M_multiple - 0x30) - 1;
}
pci_write_config16(PCI_DEV(0, 0, 0), REMAPBASE,
pci_write_config16(MCHDEV, REMAPBASE,
remap_base);
pci_write_config16(PCI_DEV(0, 0, 0), REMAPLIMIT,
pci_write_config16(MCHDEV, REMAPLIMIT,
remap_limit);
}
}
@@ -1170,31 +1174,31 @@ static void initialize_ecc(void)
uint32_t dram_controller_mode;
/* Test to see if ECC support is enabled */
dram_controller_mode = pci_read_config32(PCI_DEV(0, 0, 0), DRC);
dram_controller_mode = pci_read_config32(MCHDEV, DRC);
dram_controller_mode >>= 20;
dram_controller_mode &= 3;
if (dram_controller_mode == 2) {
uint8_t byte;
RAM_DEBUG_MESSAGE("Initializing ECC state...\n");
pci_write_config8(PCI_DEV(0, 0, 0), MCHCFGNS, 0x01);
pci_write_config8(MCHDEV, MCHCFGNS, 0x01);
// Wait for scrub cycle to complete
do {
byte =
pci_read_config8(PCI_DEV(0, 0, 0), MCHCFGNS);
pci_read_config8(MCHDEV, MCHCFGNS);
} while ((byte & 0x08) == 0);
pci_write_config8(PCI_DEV(0, 0, 0), MCHCFGNS, (byte & 0xfc) | 0x04);
pci_write_config8(MCHDEV, MCHCFGNS, (byte & 0xfc) | 0x04);
RAM_DEBUG_MESSAGE("ECC state initialized.\n");
/* Clear the ECC error bits */
pci_write_config8(PCI_DEV(0, 0, 1), DRAM_FERR, 0x03);
pci_write_config8(PCI_DEV(0, 0, 1), DRAM_NERR, 0x03);
pci_write_config8(RASDEV, DRAM_FERR, 0x03);
pci_write_config8(RASDEV, DRAM_NERR, 0x03);
// Clear DRAM Interface error bits (write-one-clear)
pci_write_config32(PCI_DEV(0, 0, 1), FERR_GLOBAL, 1 << 18);
pci_write_config32(PCI_DEV(0, 0, 1), NERR_GLOBAL, 1 << 18);
pci_write_config32(RASDEV, FERR_GLOBAL, 1 << 18);
pci_write_config32(RASDEV, NERR_GLOBAL, 1 << 18);
}
}
@@ -1218,7 +1222,7 @@ static void configure_e7501_dram_timing(const struct mem_controller *ctrl,
uint8_t slowest_ras_cas_delay = 0;
uint8_t slowest_active_to_precharge_delay = 0;
uint32_t current_cas_latency =
pci_read_config32(PCI_DEV(0, 0, 0), DRT) & DRT_CAS_MASK;
pci_read_config32(MCHDEV, DRT) & DRT_CAS_MASK;
// CAS# latency must be programmed beforehand
ASSERT((current_cas_latency == DRT_CAS_2_0)
@@ -1267,7 +1271,7 @@ static void configure_e7501_dram_timing(const struct mem_controller *ctrl,
// At 133 MHz, 1 clock == 7.52 ns
/* Read the initial state */
dram_timing = pci_read_config32(PCI_DEV(0, 0, 0), DRT);
dram_timing = pci_read_config32(MCHDEV, DRT);
/* Trp */
@@ -1326,7 +1330,7 @@ static void configure_e7501_dram_timing(const struct mem_controller *ctrl,
if (current_cas_latency == DRT_CAS_2_0)
dram_timing |= (1 << 28); // 4 clocks
pci_write_config32(PCI_DEV(0, 0, 0), DRT, dram_timing);
pci_write_config32(MCHDEV, DRT, dram_timing);
return;
@@ -1348,7 +1352,7 @@ static void configure_e7501_cas_latency(const struct mem_controller *ctrl,
int i;
int value;
uint32_t dram_timing;
uint16_t maybe_dram_read_timing;
uint16_t dram_read_timing;
uint32_t dword;
// CAS# latency bitmasks in SPD_ACCEPTABLE_CAS_LATENCIES format
@@ -1430,20 +1434,20 @@ static void configure_e7501_cas_latency(const struct mem_controller *ctrl,
* cas latency I can use.
*/
dram_timing = pci_read_config32(PCI_DEV(0, 0, 0), DRT);
dram_timing = pci_read_config32(MCHDEV, DRT);
dram_timing &= ~(DRT_CAS_MASK);
maybe_dram_read_timing =
pci_read_config16(PCI_DEV(0, 0, 0), MAYBE_DRDCTL);
maybe_dram_read_timing &= 0xF000;
dram_read_timing =
pci_read_config16(MCHDEV, DRDCTL);
dram_read_timing &= 0xF000;
if (system_compatible_cas_latencies & SPD_CAS_LATENCY_2_0) {
dram_timing |= DRT_CAS_2_0;
maybe_dram_read_timing |= 0x0222;
dram_read_timing |= 0x0222;
} else if (system_compatible_cas_latencies & SPD_CAS_LATENCY_2_5) {
uint32_t dram_row_attributes =
pci_read_config32(PCI_DEV(0, 0, 0), DRA);
pci_read_config32(MCHDEV, DRA);
dram_timing |= DRT_CAS_2_5;
@@ -1456,32 +1460,32 @@ static void configure_e7501_cas_latency(const struct mem_controller *ctrl,
&& (dram_row_attributes & 0xff000000)) {
// All slots populated
maybe_dram_read_timing |= 0x0882;
dram_read_timing |= 0x0882;
} else {
// Some unpopulated slots
maybe_dram_read_timing |= 0x0662;
dram_read_timing |= 0x0662;
}
} else
die("No CAS# latencies compatible with all DIMMs!!\n");
pci_write_config32(PCI_DEV(0, 0, 0), DRT, dram_timing);
pci_write_config32(MCHDEV, DRT, dram_timing);
/* set master DLL reset */
dword = pci_read_config32(PCI_DEV(0, 0, 0), 0x88);
dword = pci_read_config32(MCHDEV, 0x88);
dword |= (1 << 26);
pci_write_config32(PCI_DEV(0, 0, 0), 0x88, dword);
pci_write_config32(MCHDEV, 0x88, dword);
/* patch try register 88 is undocumented tnz */
dword &= 0x0ca17fff;
dword |= 0xd14a5000;
pci_write_config32(PCI_DEV(0, 0, 0), 0x88, dword);
pci_write_config32(MCHDEV, 0x88, dword);
pci_write_config16(PCI_DEV(0, 0, 0), MAYBE_DRDCTL,
maybe_dram_read_timing);
pci_write_config16(MCHDEV, DRDCTL,
dram_read_timing);
/* clear master DLL reset */
dword = pci_read_config32(PCI_DEV(0, 0, 0), 0x88);
dword = pci_read_config32(MCHDEV, 0x88);
dword &= ~(1 << 26);
pci_write_config32(PCI_DEV(0, 0, 0), 0x88, dword);
pci_write_config32(MCHDEV, 0x88, dword);
return;
@@ -1506,7 +1510,7 @@ static void configure_e7501_dram_controller_mode(const struct
// Initial settings
uint32_t controller_mode =
pci_read_config32(PCI_DEV(0, 0, 0), DRC);
pci_read_config32(MCHDEV, DRC);
uint32_t system_refresh_mode = (controller_mode >> 8) & 7;
// Code below assumes that most aggressive settings are in
@@ -1592,7 +1596,7 @@ static void configure_e7501_dram_controller_mode(const struct
controller_mode |= (system_refresh_mode << 8);
// Configure the E7501
pci_write_config32(PCI_DEV(0, 0, 0), DRC, controller_mode);
pci_write_config32(MCHDEV, DRC, controller_mode);
}
/**
@@ -1645,7 +1649,7 @@ static void configure_e7501_row_attributes(const struct mem_controller
}
/* Write the new row attributes register */
pci_write_config32(PCI_DEV(0, 0, 0), DRA, row_attributes);
pci_write_config32(MCHDEV, DRA, row_attributes);
}
/*
@@ -1657,9 +1661,9 @@ static void configure_e7501_row_attributes(const struct mem_controller
static void enable_e7501_clocks(uint8_t dimm_mask)
{
int i;
uint8_t clock_disable = pci_read_config8(PCI_DEV(0, 0, 0), CKDIS);
uint8_t clock_disable = pci_read_config8(MCHDEV, CKDIS);
pci_write_config8(PCI_DEV(0,0,0), 0x8e, 0xb0);
pci_write_config8(MCHDEV, 0x8e, 0xb0);
for (i = 0; i < MAX_DIMM_SOCKETS_PER_CHANNEL; i++) {
@@ -1671,7 +1675,7 @@ static void enable_e7501_clocks(uint8_t dimm_mask)
clock_disable |= socket_mask; // DIMM absent, disable clock
}
pci_write_config8(PCI_DEV(0, 0, 0), CKDIS, clock_disable);
pci_write_config8(MCHDEV, CKDIS, clock_disable);
}
/* DIMM-dedependent configuration functions */
@@ -1682,13 +1686,13 @@ static void enable_e7501_clocks(uint8_t dimm_mask)
static void RAM_RESET_DDR_PTR(void)
{
uint8_t byte;
byte = pci_read_config8(PCI_DEV(0, 0, 0), 0x88);
byte = pci_read_config8(MCHDEV, 0x88);
byte |= (1 << 4);
pci_write_config8(PCI_DEV(0, 0, 0), 0x88, byte);
pci_write_config8(MCHDEV, 0x88, byte);
byte = pci_read_config8(PCI_DEV(0, 0, 0), 0x88);
byte = pci_read_config8(MCHDEV, 0x88);
byte &= ~(1 << 4);
pci_write_config8(PCI_DEV(0, 0, 0), 0x88, byte);
pci_write_config8(MCHDEV, 0x88, byte);
}
/**
@@ -1723,11 +1727,11 @@ static void ram_set_d0f0_regs(void)
ASSERT((bits_to_mask & bits_to_set) == 0);
register_value =
pci_read_config32(PCI_DEV(0, 0, 0), register_offset);
pci_read_config32(MCHDEV, register_offset);
register_value &= bits_to_mask;
register_value |= bits_to_set;
pci_write_config32(PCI_DEV(0, 0, 0), register_offset,
pci_write_config32(MCHDEV, register_offset,
register_value);
}
}
@@ -1761,87 +1765,87 @@ static void write_8dwords(const uint32_t *src_addr, uint32_t dst_addr)
static void ram_set_rcomp_regs(void)
{
uint32_t dword;
uint8_t maybe_strength_control, revision;
uint8_t strength_control, revision;
RAM_DEBUG_MESSAGE("Setting RCOMP registers.\n");
/*enable access to the rcomp bar */
dword = pci_read_config32(PCI_DEV(0, 0, 0), MAYBE_MCHTST);
dword = pci_read_config32(MCHDEV, MCHTST);
dword |= (1 << 22);
pci_write_config32(PCI_DEV(0, 0, 0), MAYBE_MCHTST, dword);
pci_write_config32(MCHDEV, MCHTST, dword);
// Set the RCOMP MMIO base address
pci_write_config32(PCI_DEV(0, 0, 0), MAYBE_SMRBASE, RCOMP_MMIO);
pci_write_config32(MCHDEV, SMRBASE, RCOMP_MMIO);
// Block RCOMP updates while we configure the registers
dword = read32(RCOMP_MMIO + MAYBE_SMRCTL);
dword = read32(RCOMP_MMIO + SMRCTL);
dword |= (1 << 9);
write32(RCOMP_MMIO + MAYBE_SMRCTL, dword);
write32(RCOMP_MMIO + SMRCTL, dword);
/* Begin to write the RCOMP registers */
write8(RCOMP_MMIO + 0x2c, 0x0);
// Set CMD and DQ/DQS strength to 2x (?)
maybe_strength_control = read8(RCOMP_MMIO + MAYBE_DQCMDSTR) & 0x88;
maybe_strength_control |= 0x40;
write8(RCOMP_MMIO + MAYBE_DQCMDSTR, maybe_strength_control);
write_8dwords(maybe_2x_slew_table, RCOMP_MMIO + 0x80);
strength_control = read8(RCOMP_MMIO + DQCMDSTR) & 0x88;
strength_control |= 0x40;
write8(RCOMP_MMIO + DQCMDSTR, strength_control);
write_8dwords(slew_2x, RCOMP_MMIO + 0x80);
write16(RCOMP_MMIO + 0x42, 0);
// Set CMD and DQ/DQS strength to 2x (?)
maybe_strength_control = read8(RCOMP_MMIO + MAYBE_DQCMDSTR) & 0xF8;
maybe_strength_control |= 0x04;
write8(RCOMP_MMIO + MAYBE_DQCMDSTR, maybe_strength_control);
write_8dwords(maybe_2x_slew_table, RCOMP_MMIO + 0x60);
strength_control = read8(RCOMP_MMIO + DQCMDSTR) & 0xF8;
strength_control |= 0x04;
write8(RCOMP_MMIO + DQCMDSTR, strength_control);
write_8dwords(slew_2x, RCOMP_MMIO + 0x60);
write16(RCOMP_MMIO + 0x40, 0);
// Set RCVEnOut# strength to 2x (?)
maybe_strength_control = read8(RCOMP_MMIO + MAYBE_RCVENSTR) & 0xF8;
maybe_strength_control |= 0x04;
write8(RCOMP_MMIO + MAYBE_RCVENSTR, maybe_strength_control);
write_8dwords(maybe_2x_slew_table, RCOMP_MMIO + 0x1c0);
strength_control = read8(RCOMP_MMIO + RCVENSTR) & 0xF8;
strength_control |= 0x04;
write8(RCOMP_MMIO + RCVENSTR, strength_control);
write_8dwords(slew_2x, RCOMP_MMIO + 0x1c0);
write16(RCOMP_MMIO + 0x50, 0);
// Set CS# strength for x4 SDRAM to 2x (?)
maybe_strength_control = read8(RCOMP_MMIO + MAYBE_CSBSTR) & 0x88;
maybe_strength_control |= 0x04;
write8(RCOMP_MMIO + MAYBE_CSBSTR, maybe_strength_control);
write_8dwords(maybe_2x_slew_table, RCOMP_MMIO + 0x140);
strength_control = read8(RCOMP_MMIO + CSBSTR) & 0x88;
strength_control |= 0x04;
write8(RCOMP_MMIO + CSBSTR, strength_control);
write_8dwords(slew_2x, RCOMP_MMIO + 0x140);
write16(RCOMP_MMIO + 0x48, 0);
// Set CS# strength for x4 SDRAM to 2x (?)
maybe_strength_control = read8(RCOMP_MMIO + MAYBE_CSBSTR) & 0x8F;
maybe_strength_control |= 0x40;
write8(RCOMP_MMIO + MAYBE_CSBSTR, maybe_strength_control);
write_8dwords(maybe_2x_slew_table, RCOMP_MMIO + 0x160);
strength_control = read8(RCOMP_MMIO + CSBSTR) & 0x8F;
strength_control |= 0x40;
write8(RCOMP_MMIO + CSBSTR, strength_control);
write_8dwords(slew_2x, RCOMP_MMIO + 0x160);
write16(RCOMP_MMIO + 0x4a, 0);
// Set CKE strength for x4 SDRAM to 2x (?)
maybe_strength_control = read8(RCOMP_MMIO + MAYBE_CKESTR) & 0x88;
maybe_strength_control |= 0x04;
write8(RCOMP_MMIO + MAYBE_CKESTR, maybe_strength_control);
write_8dwords(maybe_2x_slew_table, RCOMP_MMIO + 0xa0);
strength_control = read8(RCOMP_MMIO + CKESTR) & 0x88;
strength_control |= 0x04;
write8(RCOMP_MMIO + CKESTR, strength_control);
write_8dwords(slew_2x, RCOMP_MMIO + 0xa0);
write16(RCOMP_MMIO + 0x44, 0);
// Set CKE strength for x4 SDRAM to 2x (?)
maybe_strength_control = read8(RCOMP_MMIO + MAYBE_CKESTR) & 0x8F;
maybe_strength_control |= 0x40;
write8(RCOMP_MMIO + MAYBE_CKESTR, maybe_strength_control);
write_8dwords(maybe_2x_slew_table, RCOMP_MMIO + 0xc0);
strength_control = read8(RCOMP_MMIO + CKESTR) & 0x8F;
strength_control |= 0x40;
write8(RCOMP_MMIO + CKESTR, strength_control);
write_8dwords(slew_2x, RCOMP_MMIO + 0xc0);
write16(RCOMP_MMIO + 0x46, 0);
// Set CK strength for x4 SDRAM to 1x (?)
maybe_strength_control = read8(RCOMP_MMIO + MAYBE_CKSTR) & 0x88;
maybe_strength_control |= 0x01;
write8(RCOMP_MMIO + MAYBE_CKSTR, maybe_strength_control);
write_8dwords(maybe_pull_updown_offset_table, RCOMP_MMIO + 0x180);
strength_control = read8(RCOMP_MMIO + CKSTR) & 0x88;
strength_control |= 0x01;
write8(RCOMP_MMIO + CKSTR, strength_control);
write_8dwords(pull_updown_offset_table, RCOMP_MMIO + 0x180);
write16(RCOMP_MMIO + 0x4c, 0);
// Set CK strength for x4 SDRAM to 1x (?)
maybe_strength_control = read8(RCOMP_MMIO + MAYBE_CKSTR) & 0x8F;
maybe_strength_control |= 0x10;
write8(RCOMP_MMIO + MAYBE_CKSTR, maybe_strength_control);
write_8dwords(maybe_pull_updown_offset_table, RCOMP_MMIO + 0x1a0);
strength_control = read8(RCOMP_MMIO + CKSTR) & 0x8F;
strength_control |= 0x10;
write8(RCOMP_MMIO + CKSTR, strength_control);
write_8dwords(pull_updown_offset_table, RCOMP_MMIO + 0x1a0);
write16(RCOMP_MMIO + 0x4e, 0);
@@ -1855,33 +1859,33 @@ static void ram_set_rcomp_regs(void)
ram_handle_d060_1();
dword = pci_read_config32(PCI_DEV(0,0,0), MAYBE_MCHTST);
dword = pci_read_config32(MCHDEV, MCHTST);
dword &= 0x3fffffff;
pci_write_config32(PCI_DEV(0,0,0), MAYBE_MCHTST, dword);
pci_write_config32(MCHDEV, MCHTST, dword);
revision = pci_read_config8(PCI_DEV(0,0,0), 0x08);
revision = pci_read_config8(MCHDEV, 0x08);
if (revision >= 3) {
dword = read32(RCOMP_MMIO + MAYBE_SMRCTL);
dword = read32(RCOMP_MMIO + SMRCTL);
dword &= ~0x100;
write32(RCOMP_MMIO + MAYBE_SMRCTL, dword);
dword = read32(RCOMP_MMIO + MAYBE_SMRCTL);
write32(RCOMP_MMIO + SMRCTL, dword);
dword = read32(RCOMP_MMIO + SMRCTL);
dword |= 0x500;
write32(RCOMP_MMIO + MAYBE_SMRCTL, dword);
write32(RCOMP_MMIO + SMRCTL, dword);
}
dword = read32(RCOMP_MMIO + MAYBE_SMRCTL);
dword = read32(RCOMP_MMIO + SMRCTL);
dword &= ~0x203;
dword |= 0x401;
write32(RCOMP_MMIO + MAYBE_SMRCTL, dword);
write32(RCOMP_MMIO + SMRCTL, dword);
/* Wait 40 usec */
SLOW_DOWN_IO;
// Clear the RCOMP MMIO base address
pci_write_config32(PCI_DEV(0, 0, 0), MAYBE_SMRBASE, 0);
pci_write_config32(MCHDEV, SMRBASE, 0);
/*disable access to the rcomp bar */
dword = pci_read_config32(PCI_DEV(0, 0, 0), MAYBE_MCHTST);
dword = pci_read_config32(MCHDEV, MCHTST);
dword &= ~(1 << 22);
pci_write_config32(PCI_DEV(0, 0, 0), MAYBE_MCHTST, dword);
pci_write_config32(MCHDEV, MCHTST, dword);
}
@@ -1901,7 +1905,7 @@ Public interface:
static void sdram_enable(int controllers,
const struct mem_controller *ctrl)
{
uint8_t dimm_mask = pci_read_config16(PCI_DEV(0, 0, 0), SKPD);
uint8_t dimm_mask = pci_read_config16(MCHDEV, SKPD);
uint32_t dram_controller_mode;
if (dimm_mask == 0)
@@ -1988,15 +1992,15 @@ static void sdram_enable(int controllers,
configure_e7501_ram_addresses(ctrl, dimm_mask);
/* Finally enable refresh */
dram_controller_mode = pci_read_config32(PCI_DEV(0, 0, 0), DRC);
dram_controller_mode = pci_read_config32(MCHDEV, DRC);
dram_controller_mode |= (1 << 29);
pci_write_config32(PCI_DEV(0, 0, 0), DRC, dram_controller_mode);
pci_write_config32(MCHDEV, DRC, dram_controller_mode);
EXTRA_DELAY;
initialize_ecc();
dram_controller_mode = pci_read_config32(PCI_DEV(0, 0, 0), DRC); /* FCS_EN */
dram_controller_mode = pci_read_config32(MCHDEV, DRC); /* FCS_EN */
dram_controller_mode |= (1 << 17); // NOTE: undocumented reserved bit
pci_write_config32(PCI_DEV(0, 0, 0), DRC, dram_controller_mode);
pci_write_config32(MCHDEV, DRC, dram_controller_mode);
RAM_DEBUG_MESSAGE("Northbridge following SDRAM init:\n");
DUMPNORTH();
@@ -2045,7 +2049,7 @@ static void sdram_set_spd_registers(const struct mem_controller *ctrl)
* configure_e7501_ram_addresses() without having to regenerate the bitmask
* of usable DIMMs.
*/
pci_write_config16(PCI_DEV(0, 0, 0), SKPD, dimm_mask);
pci_write_config16(MCHDEV, SKPD, dimm_mask);
}
/**