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nest-open-source / nest-learning-thermostat / 5.7.1 / u-boot / 119e14c76a810afad0f53248d71725e35a5aef3d / . / u-boot-imx / arch / x86 / cpu / quark / mrc_util.c
blob: 49d803d794c0e75c4560ca8ade5c27def00345ec [file] [log] [blame]
/*
* Copyright (C) 2013, Intel Corporation
* Copyright (C) 2015, Bin Meng <bmeng.cn@gmail.com>
*
* Ported from Intel released Quark UEFI BIOS
* QuarkSocPkg/QuarkNorthCluster/MemoryInit/Pei
*
* SPDX-License-Identifier: Intel
*/
#include <common.h>
#include <asm/arch/device.h>
#include <asm/arch/mrc.h>
#include <asm/arch/msg_port.h>
#include "mrc_util.h"
#include "hte.h"
#include "smc.h"
static const uint8_t vref_codes[64] = {
/* lowest to highest */
0x3f, 0x3e, 0x3d, 0x3c, 0x3b, 0x3a, 0x39, 0x38,
0x37, 0x36, 0x35, 0x34, 0x33, 0x32, 0x31, 0x30,
0x2f, 0x2e, 0x2d, 0x2c, 0x2b, 0x2a, 0x29, 0x28,
0x27, 0x26, 0x25, 0x24, 0x23, 0x22, 0x21, 0x20,
0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17,
0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f
};
void mrc_write_mask(u32 unit, u32 addr, u32 data, u32 mask)
{
msg_port_write(unit, addr,
(msg_port_read(unit, addr) & ~(mask)) |
((data) & (mask)));
}
void mrc_alt_write_mask(u32 unit, u32 addr, u32 data, u32 mask)
{
msg_port_alt_write(unit, addr,
(msg_port_alt_read(unit, addr) & ~(mask)) |
((data) & (mask)));
}
void mrc_post_code(uint8_t major, uint8_t minor)
{
/* send message to UART */
DPF(D_INFO, "POST: 0x%01x%02x\n", major, minor);
/* error check */
if (major == 0xee)
hang();
}
/* Delay number of nanoseconds */
void delay_n(uint32_t ns)
{
/* 1000 MHz clock has 1ns period --> no conversion required */
uint64_t final_tsc = rdtsc();
final_tsc += ((get_tbclk_mhz() * ns) / 1000);
while (rdtsc() < final_tsc)
;
}
/* Delay number of microseconds */
void delay_u(uint32_t ms)
{
/* 64-bit math is not an option, just use loops */
while (ms--)
delay_n(1000);
}
/* Select Memory Manager as the source for PRI interface */
void select_mem_mgr(void)
{
u32 dco;
ENTERFN();
dco = msg_port_read(MEM_CTLR, DCO);
dco &= ~DCO_PMICTL;
msg_port_write(MEM_CTLR, DCO, dco);
LEAVEFN();
}
/* Select HTE as the source for PRI interface */
void select_hte(void)
{
u32 dco;
ENTERFN();
dco = msg_port_read(MEM_CTLR, DCO);
dco |= DCO_PMICTL;
msg_port_write(MEM_CTLR, DCO, dco);
LEAVEFN();
}
/*
* Send DRAM command
* data should be formated using DCMD_Xxxx macro or emrsXCommand structure
*/
void dram_init_command(uint32_t data)
{
pci_write_config_dword(QUARK_HOST_BRIDGE, MSG_DATA_REG, data);
pci_write_config_dword(QUARK_HOST_BRIDGE, MSG_CTRL_EXT_REG, 0);
msg_port_setup(MSG_OP_DRAM_INIT, MEM_CTLR, 0);
DPF(D_REGWR, "WR32 %03X %08X %08X\n", MEM_CTLR, 0, data);
}
/* Send DRAM wake command using special MCU side-band WAKE opcode */
void dram_wake_command(void)
{
ENTERFN();
msg_port_setup(MSG_OP_DRAM_WAKE, MEM_CTLR, 0);
LEAVEFN();
}
void training_message(uint8_t channel, uint8_t rank, uint8_t byte_lane)
{
/* send message to UART */
DPF(D_INFO, "CH%01X RK%01X BL%01X\n", channel, rank, byte_lane);
}
/*
* This function will program the RCVEN delays
*
* (currently doesn't comprehend rank)
*/
void set_rcvn(uint8_t channel, uint8_t rank,
uint8_t byte_lane, uint32_t pi_count)
{
uint32_t reg;
uint32_t msk;
uint32_t temp;
ENTERFN();
DPF(D_TRN, "Rcvn ch%d rnk%d ln%d : pi=%03X\n",
channel, rank, byte_lane, pi_count);
/*
* RDPTR (1/2 MCLK, 64 PIs)
* BL0 -> B01PTRCTL0[11:08] (0x0-0xF)
* BL1 -> B01PTRCTL0[23:20] (0x0-0xF)
*/
reg = B01PTRCTL0 + (byte_lane >> 1) * DDRIODQ_BL_OFFSET +
channel * DDRIODQ_CH_OFFSET;
msk = (byte_lane & 1) ? 0xf00000 : 0xf00;
temp = (byte_lane & 1) ? (pi_count / HALF_CLK) << 20 :
(pi_count / HALF_CLK) << 8;
mrc_alt_write_mask(DDRPHY, reg, temp, msk);
/* Adjust PI_COUNT */
pi_count -= ((pi_count / HALF_CLK) & 0xf) * HALF_CLK;
/*
* PI (1/64 MCLK, 1 PIs)
* BL0 -> B0DLLPICODER0[29:24] (0x00-0x3F)
* BL1 -> B1DLLPICODER0[29:24] (0x00-0x3F)
*/
reg = (byte_lane & 1) ? B1DLLPICODER0 : B0DLLPICODER0;
reg += ((byte_lane >> 1) * DDRIODQ_BL_OFFSET +
channel * DDRIODQ_CH_OFFSET);
msk = 0x3f000000;
temp = pi_count << 24;
mrc_alt_write_mask(DDRPHY, reg, temp, msk);
/*
* DEADBAND
* BL0/1 -> B01DBCTL1[08/11] (+1 select)
* BL0/1 -> B01DBCTL1[02/05] (enable)
*/
reg = B01DBCTL1 + (byte_lane >> 1) * DDRIODQ_BL_OFFSET +
channel * DDRIODQ_CH_OFFSET;
msk = 0x00;
temp = 0x00;
/* enable */
msk |= (byte_lane & 1) ? (1 << 5) : (1 << 2);
if ((pi_count < EARLY_DB) || (pi_count > LATE_DB))
temp |= msk;
/* select */
msk |= (byte_lane & 1) ? (1 << 11) : (1 << 8);
if (pi_count < EARLY_DB)
temp |= msk;
mrc_alt_write_mask(DDRPHY, reg, temp, msk);
/* error check */
if (pi_count > 0x3f) {
training_message(channel, rank, byte_lane);
mrc_post_code(0xee, 0xe0);
}
LEAVEFN();
}
/*
* This function will return the current RCVEN delay on the given
* channel, rank, byte_lane as an absolute PI count.
*
* (currently doesn't comprehend rank)
*/
uint32_t get_rcvn(uint8_t channel, uint8_t rank, uint8_t byte_lane)
{
uint32_t reg;
uint32_t temp;
uint32_t pi_count;
ENTERFN();
/*
* RDPTR (1/2 MCLK, 64 PIs)
* BL0 -> B01PTRCTL0[11:08] (0x0-0xF)
* BL1 -> B01PTRCTL0[23:20] (0x0-0xF)
*/
reg = B01PTRCTL0 + (byte_lane >> 1) * DDRIODQ_BL_OFFSET +
channel * DDRIODQ_CH_OFFSET;
temp = msg_port_alt_read(DDRPHY, reg);
temp >>= (byte_lane & 1) ? 20 : 8;
temp &= 0xf;
/* Adjust PI_COUNT */
pi_count = temp * HALF_CLK;
/*
* PI (1/64 MCLK, 1 PIs)
* BL0 -> B0DLLPICODER0[29:24] (0x00-0x3F)
* BL1 -> B1DLLPICODER0[29:24] (0x00-0x3F)
*/
reg = (byte_lane & 1) ? B1DLLPICODER0 : B0DLLPICODER0;
reg += ((byte_lane >> 1) * DDRIODQ_BL_OFFSET +
channel * DDRIODQ_CH_OFFSET);
temp = msg_port_alt_read(DDRPHY, reg);
temp >>= 24;
temp &= 0x3f;
/* Adjust PI_COUNT */
pi_count += temp;
LEAVEFN();
return pi_count;
}
/*
* This function will program the RDQS delays based on an absolute
* amount of PIs.
*
* (currently doesn't comprehend rank)
*/
void set_rdqs(uint8_t channel, uint8_t rank,
uint8_t byte_lane, uint32_t pi_count)
{
uint32_t reg;
uint32_t msk;
uint32_t temp;
ENTERFN();
DPF(D_TRN, "Rdqs ch%d rnk%d ln%d : pi=%03X\n",
channel, rank, byte_lane, pi_count);
/*
* PI (1/128 MCLK)
* BL0 -> B0RXDQSPICODE[06:00] (0x00-0x47)
* BL1 -> B1RXDQSPICODE[06:00] (0x00-0x47)
*/
reg = (byte_lane & 1) ? B1RXDQSPICODE : B0RXDQSPICODE;
reg += ((byte_lane >> 1) * DDRIODQ_BL_OFFSET +
channel * DDRIODQ_CH_OFFSET);
msk = 0x7f;
temp = pi_count << 0;
mrc_alt_write_mask(DDRPHY, reg, temp, msk);
/* error check (shouldn't go above 0x3F) */
if (pi_count > 0x47) {
training_message(channel, rank, byte_lane);
mrc_post_code(0xee, 0xe1);
}
LEAVEFN();
}
/*
* This function will return the current RDQS delay on the given
* channel, rank, byte_lane as an absolute PI count.
*
* (currently doesn't comprehend rank)
*/
uint32_t get_rdqs(uint8_t channel, uint8_t rank, uint8_t byte_lane)
{
uint32_t reg;
uint32_t temp;
uint32_t pi_count;
ENTERFN();
/*
* PI (1/128 MCLK)
* BL0 -> B0RXDQSPICODE[06:00] (0x00-0x47)
* BL1 -> B1RXDQSPICODE[06:00] (0x00-0x47)
*/
reg = (byte_lane & 1) ? B1RXDQSPICODE : B0RXDQSPICODE;
reg += ((byte_lane >> 1) * DDRIODQ_BL_OFFSET +
channel * DDRIODQ_CH_OFFSET);
temp = msg_port_alt_read(DDRPHY, reg);
/* Adjust PI_COUNT */
pi_count = temp & 0x7f;
LEAVEFN();
return pi_count;
}
/*
* This function will program the WDQS delays based on an absolute
* amount of PIs.
*
* (currently doesn't comprehend rank)
*/
void set_wdqs(uint8_t channel, uint8_t rank,
uint8_t byte_lane, uint32_t pi_count)
{
uint32_t reg;
uint32_t msk;
uint32_t temp;
ENTERFN();
DPF(D_TRN, "Wdqs ch%d rnk%d ln%d : pi=%03X\n",
channel, rank, byte_lane, pi_count);
/*
* RDPTR (1/2 MCLK, 64 PIs)
* BL0 -> B01PTRCTL0[07:04] (0x0-0xF)
* BL1 -> B01PTRCTL0[19:16] (0x0-0xF)
*/
reg = B01PTRCTL0 + (byte_lane >> 1) * DDRIODQ_BL_OFFSET +
channel * DDRIODQ_CH_OFFSET;
msk = (byte_lane & 1) ? 0xf0000 : 0xf0;
temp = pi_count / HALF_CLK;
temp <<= (byte_lane & 1) ? 16 : 4;
mrc_alt_write_mask(DDRPHY, reg, temp, msk);
/* Adjust PI_COUNT */
pi_count -= ((pi_count / HALF_CLK) & 0xf) * HALF_CLK;
/*
* PI (1/64 MCLK, 1 PIs)
* BL0 -> B0DLLPICODER0[21:16] (0x00-0x3F)
* BL1 -> B1DLLPICODER0[21:16] (0x00-0x3F)
*/
reg = (byte_lane & 1) ? B1DLLPICODER0 : B0DLLPICODER0;
reg += ((byte_lane >> 1) * DDRIODQ_BL_OFFSET +
channel * DDRIODQ_CH_OFFSET);
msk = 0x3f0000;
temp = pi_count << 16;
mrc_alt_write_mask(DDRPHY, reg, temp, msk);
/*
* DEADBAND
* BL0/1 -> B01DBCTL1[07/10] (+1 select)
* BL0/1 -> B01DBCTL1[01/04] (enable)
*/
reg = B01DBCTL1 + (byte_lane >> 1) * DDRIODQ_BL_OFFSET +
channel * DDRIODQ_CH_OFFSET;
msk = 0x00;
temp = 0x00;
/* enable */
msk |= (byte_lane & 1) ? (1 << 4) : (1 << 1);
if ((pi_count < EARLY_DB) || (pi_count > LATE_DB))
temp |= msk;
/* select */
msk |= (byte_lane & 1) ? (1 << 10) : (1 << 7);
if (pi_count < EARLY_DB)
temp |= msk;
mrc_alt_write_mask(DDRPHY, reg, temp, msk);
/* error check */
if (pi_count > 0x3f) {
training_message(channel, rank, byte_lane);
mrc_post_code(0xee, 0xe2);
}
LEAVEFN();
}
/*
* This function will return the amount of WDQS delay on the given
* channel, rank, byte_lane as an absolute PI count.
*
* (currently doesn't comprehend rank)
*/
uint32_t get_wdqs(uint8_t channel, uint8_t rank, uint8_t byte_lane)
{
uint32_t reg;
uint32_t temp;
uint32_t pi_count;
ENTERFN();
/*
* RDPTR (1/2 MCLK, 64 PIs)
* BL0 -> B01PTRCTL0[07:04] (0x0-0xF)
* BL1 -> B01PTRCTL0[19:16] (0x0-0xF)
*/
reg = B01PTRCTL0 + (byte_lane >> 1) * DDRIODQ_BL_OFFSET +
channel * DDRIODQ_CH_OFFSET;
temp = msg_port_alt_read(DDRPHY, reg);
temp >>= (byte_lane & 1) ? 16 : 4;
temp &= 0xf;
/* Adjust PI_COUNT */
pi_count = (temp * HALF_CLK);
/*
* PI (1/64 MCLK, 1 PIs)
* BL0 -> B0DLLPICODER0[21:16] (0x00-0x3F)
* BL1 -> B1DLLPICODER0[21:16] (0x00-0x3F)
*/
reg = (byte_lane & 1) ? B1DLLPICODER0 : B0DLLPICODER0;
reg += ((byte_lane >> 1) * DDRIODQ_BL_OFFSET +
channel * DDRIODQ_CH_OFFSET);
temp = msg_port_alt_read(DDRPHY, reg);
temp >>= 16;
temp &= 0x3f;
/* Adjust PI_COUNT */
pi_count += temp;
LEAVEFN();
return pi_count;
}
/*
* This function will program the WDQ delays based on an absolute
* number of PIs.
*
* (currently doesn't comprehend rank)
*/
void set_wdq(uint8_t channel, uint8_t rank,
uint8_t byte_lane, uint32_t pi_count)
{
uint32_t reg;
uint32_t msk;
uint32_t temp;
ENTERFN();
DPF(D_TRN, "Wdq ch%d rnk%d ln%d : pi=%03X\n",
channel, rank, byte_lane, pi_count);
/*
* RDPTR (1/2 MCLK, 64 PIs)
* BL0 -> B01PTRCTL0[03:00] (0x0-0xF)
* BL1 -> B01PTRCTL0[15:12] (0x0-0xF)
*/
reg = B01PTRCTL0 + (byte_lane >> 1) * DDRIODQ_BL_OFFSET +
channel * DDRIODQ_CH_OFFSET;
msk = (byte_lane & 1) ? 0xf000 : 0xf;
temp = pi_count / HALF_CLK;
temp <<= (byte_lane & 1) ? 12 : 0;
mrc_alt_write_mask(DDRPHY, reg, temp, msk);
/* Adjust PI_COUNT */
pi_count -= ((pi_count / HALF_CLK) & 0xf) * HALF_CLK;
/*
* PI (1/64 MCLK, 1 PIs)
* BL0 -> B0DLLPICODER0[13:08] (0x00-0x3F)
* BL1 -> B1DLLPICODER0[13:08] (0x00-0x3F)
*/
reg = (byte_lane & 1) ? B1DLLPICODER0 : B0DLLPICODER0;
reg += ((byte_lane >> 1) * DDRIODQ_BL_OFFSET +
channel * DDRIODQ_CH_OFFSET);
msk = 0x3f00;
temp = pi_count << 8;
mrc_alt_write_mask(DDRPHY, reg, temp, msk);
/*
* DEADBAND
* BL0/1 -> B01DBCTL1[06/09] (+1 select)
* BL0/1 -> B01DBCTL1[00/03] (enable)
*/
reg = B01DBCTL1 + (byte_lane >> 1) * DDRIODQ_BL_OFFSET +
channel * DDRIODQ_CH_OFFSET;
msk = 0x00;
temp = 0x00;
/* enable */
msk |= (byte_lane & 1) ? (1 << 3) : (1 << 0);
if ((pi_count < EARLY_DB) || (pi_count > LATE_DB))
temp |= msk;
/* select */
msk |= (byte_lane & 1) ? (1 << 9) : (1 << 6);
if (pi_count < EARLY_DB)
temp |= msk;
mrc_alt_write_mask(DDRPHY, reg, temp, msk);
/* error check */
if (pi_count > 0x3f) {
training_message(channel, rank, byte_lane);
mrc_post_code(0xee, 0xe3);
}
LEAVEFN();
}
/*
* This function will return the amount of WDQ delay on the given
* channel, rank, byte_lane as an absolute PI count.
*
* (currently doesn't comprehend rank)
*/
uint32_t get_wdq(uint8_t channel, uint8_t rank, uint8_t byte_lane)
{
uint32_t reg;
uint32_t temp;
uint32_t pi_count;
ENTERFN();
/*
* RDPTR (1/2 MCLK, 64 PIs)
* BL0 -> B01PTRCTL0[03:00] (0x0-0xF)
* BL1 -> B01PTRCTL0[15:12] (0x0-0xF)
*/
reg = B01PTRCTL0 + (byte_lane >> 1) * DDRIODQ_BL_OFFSET +
channel * DDRIODQ_CH_OFFSET;
temp = msg_port_alt_read(DDRPHY, reg);
temp >>= (byte_lane & 1) ? 12 : 0;
temp &= 0xf;
/* Adjust PI_COUNT */
pi_count = temp * HALF_CLK;
/*
* PI (1/64 MCLK, 1 PIs)
* BL0 -> B0DLLPICODER0[13:08] (0x00-0x3F)
* BL1 -> B1DLLPICODER0[13:08] (0x00-0x3F)
*/
reg = (byte_lane & 1) ? B1DLLPICODER0 : B0DLLPICODER0;
reg += ((byte_lane >> 1) * DDRIODQ_BL_OFFSET +
channel * DDRIODQ_CH_OFFSET);
temp = msg_port_alt_read(DDRPHY, reg);
temp >>= 8;
temp &= 0x3f;
/* Adjust PI_COUNT */
pi_count += temp;
LEAVEFN();
return pi_count;
}
/*
* This function will program the WCMD delays based on an absolute
* number of PIs.
*/
void set_wcmd(uint8_t channel, uint32_t pi_count)
{
uint32_t reg;
uint32_t msk;
uint32_t temp;
ENTERFN();
/*
* RDPTR (1/2 MCLK, 64 PIs)
* CMDPTRREG[11:08] (0x0-0xF)
*/
reg = CMDPTRREG + channel * DDRIOCCC_CH_OFFSET;
msk = 0xf00;
temp = pi_count / HALF_CLK;
temp <<= 8;
mrc_alt_write_mask(DDRPHY, reg, temp, msk);
/* Adjust PI_COUNT */
pi_count -= ((pi_count / HALF_CLK) & 0xf) * HALF_CLK;
/*
* PI (1/64 MCLK, 1 PIs)
* CMDDLLPICODER0[29:24] -> CMDSLICE R3 (unused)
* CMDDLLPICODER0[21:16] -> CMDSLICE L3 (unused)
* CMDDLLPICODER0[13:08] -> CMDSLICE R2 (unused)
* CMDDLLPICODER0[05:00] -> CMDSLICE L2 (unused)
* CMDDLLPICODER1[29:24] -> CMDSLICE R1 (unused)
* CMDDLLPICODER1[21:16] -> CMDSLICE L1 (0x00-0x3F)
* CMDDLLPICODER1[13:08] -> CMDSLICE R0 (unused)
* CMDDLLPICODER1[05:00] -> CMDSLICE L0 (unused)
*/
reg = CMDDLLPICODER1 + channel * DDRIOCCC_CH_OFFSET;
msk = 0x3f3f3f3f;
temp = (pi_count << 24) | (pi_count << 16) |
(pi_count << 8) | (pi_count << 0);
mrc_alt_write_mask(DDRPHY, reg, temp, msk);
reg = CMDDLLPICODER0 + channel * DDRIOCCC_CH_OFFSET; /* PO */
mrc_alt_write_mask(DDRPHY, reg, temp, msk);
/*
* DEADBAND
* CMDCFGREG0[17] (+1 select)
* CMDCFGREG0[16] (enable)
*/
reg = CMDCFGREG0 + channel * DDRIOCCC_CH_OFFSET;
msk = 0x00;
temp = 0x00;
/* enable */
msk |= (1 << 16);
if ((pi_count < EARLY_DB) || (pi_count > LATE_DB))
temp |= msk;
/* select */
msk |= (1 << 17);
if (pi_count < EARLY_DB)
temp |= msk;
mrc_alt_write_mask(DDRPHY, reg, temp, msk);
/* error check */
if (pi_count > 0x3f)
mrc_post_code(0xee, 0xe4);
LEAVEFN();
}
/*
* This function will return the amount of WCMD delay on the given
* channel as an absolute PI count.
*/
uint32_t get_wcmd(uint8_t channel)
{
uint32_t reg;
uint32_t temp;
uint32_t pi_count;
ENTERFN();
/*
* RDPTR (1/2 MCLK, 64 PIs)
* CMDPTRREG[11:08] (0x0-0xF)
*/
reg = CMDPTRREG + channel * DDRIOCCC_CH_OFFSET;
temp = msg_port_alt_read(DDRPHY, reg);
temp >>= 8;
temp &= 0xf;
/* Adjust PI_COUNT */
pi_count = temp * HALF_CLK;
/*
* PI (1/64 MCLK, 1 PIs)
* CMDDLLPICODER0[29:24] -> CMDSLICE R3 (unused)
* CMDDLLPICODER0[21:16] -> CMDSLICE L3 (unused)
* CMDDLLPICODER0[13:08] -> CMDSLICE R2 (unused)
* CMDDLLPICODER0[05:00] -> CMDSLICE L2 (unused)
* CMDDLLPICODER1[29:24] -> CMDSLICE R1 (unused)
* CMDDLLPICODER1[21:16] -> CMDSLICE L1 (0x00-0x3F)
* CMDDLLPICODER1[13:08] -> CMDSLICE R0 (unused)
* CMDDLLPICODER1[05:00] -> CMDSLICE L0 (unused)
*/
reg = CMDDLLPICODER1 + channel * DDRIOCCC_CH_OFFSET;
temp = msg_port_alt_read(DDRPHY, reg);
temp >>= 16;
temp &= 0x3f;
/* Adjust PI_COUNT */
pi_count += temp;
LEAVEFN();
return pi_count;
}
/*
* This function will program the WCLK delays based on an absolute
* number of PIs.
*/
void set_wclk(uint8_t channel, uint8_t rank, uint32_t pi_count)
{
uint32_t reg;
uint32_t msk;
uint32_t temp;
ENTERFN();
/*
* RDPTR (1/2 MCLK, 64 PIs)
* CCPTRREG[15:12] -> CLK1 (0x0-0xF)
* CCPTRREG[11:08] -> CLK0 (0x0-0xF)
*/
reg = CCPTRREG + channel * DDRIOCCC_CH_OFFSET;
msk = 0xff00;
temp = ((pi_count / HALF_CLK) << 12) | ((pi_count / HALF_CLK) << 8);
mrc_alt_write_mask(DDRPHY, reg, temp, msk);
/* Adjust PI_COUNT */
pi_count -= ((pi_count / HALF_CLK) & 0xf) * HALF_CLK;
/*
* PI (1/64 MCLK, 1 PIs)
* ECCB1DLLPICODER0[13:08] -> CLK0 (0x00-0x3F)
* ECCB1DLLPICODER0[21:16] -> CLK1 (0x00-0x3F)
*/
reg = rank ? ECCB1DLLPICODER0 : ECCB1DLLPICODER0;
reg += (channel * DDRIOCCC_CH_OFFSET);
msk = 0x3f3f00;
temp = (pi_count << 16) | (pi_count << 8);
mrc_alt_write_mask(DDRPHY, reg, temp, msk);
reg = rank ? ECCB1DLLPICODER1 : ECCB1DLLPICODER1;
reg += (channel * DDRIOCCC_CH_OFFSET);
mrc_alt_write_mask(DDRPHY, reg, temp, msk);
reg = rank ? ECCB1DLLPICODER2 : ECCB1DLLPICODER2;
reg += (channel * DDRIOCCC_CH_OFFSET);
mrc_alt_write_mask(DDRPHY, reg, temp, msk);
reg = rank ? ECCB1DLLPICODER3 : ECCB1DLLPICODER3;
reg += (channel * DDRIOCCC_CH_OFFSET);
mrc_alt_write_mask(DDRPHY, reg, temp, msk);
/*
* DEADBAND
* CCCFGREG1[11:08] (+1 select)
* CCCFGREG1[03:00] (enable)
*/
reg = CCCFGREG1 + channel * DDRIOCCC_CH_OFFSET;
msk = 0x00;
temp = 0x00;
/* enable */
msk |= 0xf;
if ((pi_count < EARLY_DB) || (pi_count > LATE_DB))
temp |= msk;
/* select */
msk |= 0xf00;
if (pi_count < EARLY_DB)
temp |= msk;
mrc_alt_write_mask(DDRPHY, reg, temp, msk);
/* error check */
if (pi_count > 0x3f)
mrc_post_code(0xee, 0xe5);
LEAVEFN();
}
/*
* This function will return the amout of WCLK delay on the given
* channel, rank as an absolute PI count.
*/
uint32_t get_wclk(uint8_t channel, uint8_t rank)
{
uint32_t reg;
uint32_t temp;
uint32_t pi_count;
ENTERFN();
/*
* RDPTR (1/2 MCLK, 64 PIs)
* CCPTRREG[15:12] -> CLK1 (0x0-0xF)
* CCPTRREG[11:08] -> CLK0 (0x0-0xF)
*/
reg = CCPTRREG + channel * DDRIOCCC_CH_OFFSET;
temp = msg_port_alt_read(DDRPHY, reg);
temp >>= rank ? 12 : 8;
temp &= 0xf;
/* Adjust PI_COUNT */
pi_count = temp * HALF_CLK;
/*
* PI (1/64 MCLK, 1 PIs)
* ECCB1DLLPICODER0[13:08] -> CLK0 (0x00-0x3F)
* ECCB1DLLPICODER0[21:16] -> CLK1 (0x00-0x3F)
*/
reg = rank ? ECCB1DLLPICODER0 : ECCB1DLLPICODER0;
reg += (channel * DDRIOCCC_CH_OFFSET);
temp = msg_port_alt_read(DDRPHY, reg);
temp >>= rank ? 16 : 8;
temp &= 0x3f;
pi_count += temp;
LEAVEFN();
return pi_count;
}
/*
* This function will program the WCTL delays based on an absolute
* number of PIs.
*
* (currently doesn't comprehend rank)
*/
void set_wctl(uint8_t channel, uint8_t rank, uint32_t pi_count)
{
uint32_t reg;
uint32_t msk;
uint32_t temp;
ENTERFN();
/*
* RDPTR (1/2 MCLK, 64 PIs)
* CCPTRREG[31:28] (0x0-0xF)
* CCPTRREG[27:24] (0x0-0xF)
*/
reg = CCPTRREG + channel * DDRIOCCC_CH_OFFSET;
msk = 0xff000000;
temp = ((pi_count / HALF_CLK) << 28) | ((pi_count / HALF_CLK) << 24);
mrc_alt_write_mask(DDRPHY, reg, temp, msk);
/* Adjust PI_COUNT */
pi_count -= ((pi_count / HALF_CLK) & 0xf) * HALF_CLK;
/*
* PI (1/64 MCLK, 1 PIs)
* ECCB1DLLPICODER?[29:24] (0x00-0x3F)
* ECCB1DLLPICODER?[29:24] (0x00-0x3F)
*/
reg = ECCB1DLLPICODER0 + channel * DDRIOCCC_CH_OFFSET;
msk = 0x3f000000;
temp = (pi_count << 24);
mrc_alt_write_mask(DDRPHY, reg, temp, msk);
reg = ECCB1DLLPICODER1 + channel * DDRIOCCC_CH_OFFSET;
mrc_alt_write_mask(DDRPHY, reg, temp, msk);
reg = ECCB1DLLPICODER2 + channel * DDRIOCCC_CH_OFFSET;
mrc_alt_write_mask(DDRPHY, reg, temp, msk);
reg = ECCB1DLLPICODER3 + channel * DDRIOCCC_CH_OFFSET;
mrc_alt_write_mask(DDRPHY, reg, temp, msk);
/*
* DEADBAND
* CCCFGREG1[13:12] (+1 select)
* CCCFGREG1[05:04] (enable)
*/
reg = CCCFGREG1 + channel * DDRIOCCC_CH_OFFSET;
msk = 0x00;
temp = 0x00;
/* enable */
msk |= 0x30;
if ((pi_count < EARLY_DB) || (pi_count > LATE_DB))
temp |= msk;
/* select */
msk |= 0x3000;
if (pi_count < EARLY_DB)
temp |= msk;
mrc_alt_write_mask(DDRPHY, reg, temp, msk);
/* error check */
if (pi_count > 0x3f)
mrc_post_code(0xee, 0xe6);
LEAVEFN();
}
/*
* This function will return the amount of WCTL delay on the given
* channel, rank as an absolute PI count.
*
* (currently doesn't comprehend rank)
*/
uint32_t get_wctl(uint8_t channel, uint8_t rank)
{
uint32_t reg;
uint32_t temp;
uint32_t pi_count;
ENTERFN();
/*
* RDPTR (1/2 MCLK, 64 PIs)
* CCPTRREG[31:28] (0x0-0xF)
* CCPTRREG[27:24] (0x0-0xF)
*/
reg = CCPTRREG + channel * DDRIOCCC_CH_OFFSET;
temp = msg_port_alt_read(DDRPHY, reg);
temp >>= 24;
temp &= 0xf;
/* Adjust PI_COUNT */
pi_count = temp * HALF_CLK;
/*
* PI (1/64 MCLK, 1 PIs)
* ECCB1DLLPICODER?[29:24] (0x00-0x3F)
* ECCB1DLLPICODER?[29:24] (0x00-0x3F)
*/
reg = ECCB1DLLPICODER0 + channel * DDRIOCCC_CH_OFFSET;
temp = msg_port_alt_read(DDRPHY, reg);
temp >>= 24;
temp &= 0x3f;
/* Adjust PI_COUNT */
pi_count += temp;
LEAVEFN();
return pi_count;
}
/*
* This function will program the internal Vref setting in a given
* byte lane in a given channel.
*/
void set_vref(uint8_t channel, uint8_t byte_lane, uint32_t setting)
{
uint32_t reg = (byte_lane & 0x1) ? B1VREFCTL : B0VREFCTL;
ENTERFN();
DPF(D_TRN, "Vref ch%d ln%d : val=%03X\n",
channel, byte_lane, setting);
mrc_alt_write_mask(DDRPHY, reg + channel * DDRIODQ_CH_OFFSET +
(byte_lane >> 1) * DDRIODQ_BL_OFFSET,
vref_codes[setting] << 2, 0xfc);
/*
* need to wait ~300ns for Vref to settle
* (check that this is necessary)
*/
delay_n(300);
/* ??? may need to clear pointers ??? */
LEAVEFN();
}
/*
* This function will return the internal Vref setting for the given
* channel, byte_lane.
*/
uint32_t get_vref(uint8_t channel, uint8_t byte_lane)
{
uint8_t j;
uint32_t ret_val = sizeof(vref_codes) / 2;
uint32_t reg = (byte_lane & 0x1) ? B1VREFCTL : B0VREFCTL;
uint32_t temp;
ENTERFN();
temp = msg_port_alt_read(DDRPHY, reg + channel * DDRIODQ_CH_OFFSET +
(byte_lane >> 1) * DDRIODQ_BL_OFFSET);
temp >>= 2;
temp &= 0x3f;
for (j = 0; j < sizeof(vref_codes); j++) {
if (vref_codes[j] == temp) {
ret_val = j;
break;
}
}
LEAVEFN();
return ret_val;
}
/*
* This function will return a 32-bit address in the desired
* channel and rank.
*/
uint32_t get_addr(uint8_t channel, uint8_t rank)
{
uint32_t offset = 32 * 1024 * 1024; /* 32MB */
/* Begin product specific code */
if (channel > 0) {
DPF(D_ERROR, "ILLEGAL CHANNEL\n");
DEAD_LOOP();
}
if (rank > 1) {
DPF(D_ERROR, "ILLEGAL RANK\n");
DEAD_LOOP();
}
/* use 256MB lowest density as per DRP == 0x0003 */
offset += rank * (256 * 1024 * 1024);
return offset;
}
/*
* This function will sample the DQTRAINSTS registers in the given
* channel/rank SAMPLE_SIZE times looking for a valid '0' or '1'.
*
* It will return an encoded 32-bit date in which each bit corresponds to
* the sampled value on the byte lane.
*/
uint32_t sample_dqs(struct mrc_params *mrc_params, uint8_t channel,
uint8_t rank, bool rcvn)
{
uint8_t j; /* just a counter */
uint8_t bl; /* which BL in the module (always 2 per module) */
uint8_t bl_grp; /* which BL module */
/* byte lane divisor */
uint8_t bl_divisor = (mrc_params->channel_width == X16) ? 2 : 1;
uint32_t msk[2]; /* BLx in module */
/* DQTRAINSTS register contents for each sample */
uint32_t sampled_val[SAMPLE_SIZE];
uint32_t num_0s; /* tracks the number of '0' samples */
uint32_t num_1s; /* tracks the number of '1' samples */
uint32_t ret_val = 0x00; /* assume all '0' samples */
uint32_t address = get_addr(channel, rank);
/* initialise msk[] */
msk[0] = rcvn ? (1 << 1) : (1 << 9); /* BL0 */
msk[1] = rcvn ? (1 << 0) : (1 << 8); /* BL1 */
/* cycle through each byte lane group */
for (bl_grp = 0; bl_grp < (NUM_BYTE_LANES / bl_divisor) / 2; bl_grp++) {
/* take SAMPLE_SIZE samples */
for (j = 0; j < SAMPLE_SIZE; j++) {
hte_mem_op(address, mrc_params->first_run,
rcvn ? 0 : 1);
mrc_params->first_run = 0;
/*
* record the contents of the proper
* DQTRAINSTS register
*/
sampled_val[j] = msg_port_alt_read(DDRPHY,
DQTRAINSTS +
bl_grp * DDRIODQ_BL_OFFSET +
channel * DDRIODQ_CH_OFFSET);
}
/*
* look for a majority value (SAMPLE_SIZE / 2) + 1
* on the byte lane and set that value in the corresponding
* ret_val bit
*/
for (bl = 0; bl < 2; bl++) {
num_0s = 0x00; /* reset '0' tracker for byte lane */
num_1s = 0x00; /* reset '1' tracker for byte lane */
for (j = 0; j < SAMPLE_SIZE; j++) {
if (sampled_val[j] & msk[bl])
num_1s++;
else
num_0s++;
}
if (num_1s > num_0s)
ret_val |= (1 << (bl + bl_grp * 2));
}
}
/*
* "ret_val.0" contains the status of BL0
* "ret_val.1" contains the status of BL1
* "ret_val.2" contains the status of BL2
* etc.
*/
return ret_val;
}
/* This function will find the rising edge transition on RCVN or WDQS */
void find_rising_edge(struct mrc_params *mrc_params, uint32_t delay[],
uint8_t channel, uint8_t rank, bool rcvn)
{
bool all_edges_found; /* determines stop condition */
bool direction[NUM_BYTE_LANES]; /* direction indicator */
uint8_t sample; /* sample counter */
uint8_t bl; /* byte lane counter */
/* byte lane divisor */
uint8_t bl_divisor = (mrc_params->channel_width == X16) ? 2 : 1;
uint32_t sample_result[SAMPLE_CNT]; /* results of sample_dqs() */
uint32_t temp;
uint32_t transition_pattern;
ENTERFN();
/* select hte and request initial configuration */
select_hte();
mrc_params->first_run = 1;
/* Take 3 sample points (T1,T2,T3) to obtain a transition pattern */
for (sample = 0; sample < SAMPLE_CNT; sample++) {
/* program the desired delays for sample */
for (bl = 0; bl < (NUM_BYTE_LANES / bl_divisor); bl++) {
/* increase sample delay by 26 PI (0.2 CLK) */
if (rcvn) {
set_rcvn(channel, rank, bl,
delay[bl] + sample * SAMPLE_DLY);
} else {
set_wdqs(channel, rank, bl,
delay[bl] + sample * SAMPLE_DLY);
}
}
/* take samples (Tsample_i) */
sample_result[sample] = sample_dqs(mrc_params,
channel, rank, rcvn);
DPF(D_TRN,
"Find rising edge %s ch%d rnk%d: #%d dly=%d dqs=%02X\n",
rcvn ? "RCVN" : "WDQS", channel, rank, sample,
sample * SAMPLE_DLY, sample_result[sample]);
}
/*
* This pattern will help determine where we landed and ultimately
* how to place RCVEN/WDQS.
*/
for (bl = 0; bl < NUM_BYTE_LANES / bl_divisor; bl++) {
/* build transition_pattern (MSB is 1st sample) */
transition_pattern = 0;
for (sample = 0; sample < SAMPLE_CNT; sample++) {
transition_pattern |=
((sample_result[sample] & (1 << bl)) >> bl) <<
(SAMPLE_CNT - 1 - sample);
}
DPF(D_TRN, "=== transition pattern %d\n", transition_pattern);
/*
* set up to look for rising edge based on
* transition_pattern
*/
switch (transition_pattern) {
case 0: /* sampled 0->0->0 */
/* move forward from T3 looking for 0->1 */
delay[bl] += 2 * SAMPLE_DLY;
direction[bl] = FORWARD;
break;
case 1: /* sampled 0->0->1 */
case 5: /* sampled 1->0->1 (bad duty cycle) *HSD#237503* */
/* move forward from T2 looking for 0->1 */
delay[bl] += 1 * SAMPLE_DLY;
direction[bl] = FORWARD;
break;
case 2: /* sampled 0->1->0 (bad duty cycle) *HSD#237503* */
case 3: /* sampled 0->1->1 */
/* move forward from T1 looking for 0->1 */
delay[bl] += 0 * SAMPLE_DLY;
direction[bl] = FORWARD;
break;
case 4: /* sampled 1->0->0 (assumes BL8, HSD#234975) */
/* move forward from T3 looking for 0->1 */
delay[bl] += 2 * SAMPLE_DLY;
direction[bl] = FORWARD;
break;
case 6: /* sampled 1->1->0 */
case 7: /* sampled 1->1->1 */
/* move backward from T1 looking for 1->0 */
delay[bl] += 0 * SAMPLE_DLY;
direction[bl] = BACKWARD;
break;
default:
mrc_post_code(0xee, 0xee);
break;
}
/* program delays */
if (rcvn)
set_rcvn(channel, rank, bl, delay[bl]);
else
set_wdqs(channel, rank, bl, delay[bl]);
}
/*
* Based on the observed transition pattern on the byte lane,
* begin looking for a rising edge with single PI granularity.
*/
do {
all_edges_found = true; /* assume all byte lanes passed */
/* take a sample */
temp = sample_dqs(mrc_params, channel, rank, rcvn);
/* check all each byte lane for proper edge */
for (bl = 0; bl < NUM_BYTE_LANES / bl_divisor; bl++) {
if (temp & (1 << bl)) {
/* sampled "1" */
if (direction[bl] == BACKWARD) {
/*
* keep looking for edge
* on this byte lane
*/
all_edges_found = false;
delay[bl] -= 1;
if (rcvn) {
set_rcvn(channel, rank,
bl, delay[bl]);
} else {
set_wdqs(channel, rank,
bl, delay[bl]);
}
}
} else {
/* sampled "0" */
if (direction[bl] == FORWARD) {
/*
* keep looking for edge
* on this byte lane
*/
all_edges_found = false;
delay[bl] += 1;
if (rcvn) {
set_rcvn(channel, rank,
bl, delay[bl]);
} else {
set_wdqs(channel, rank,
bl, delay[bl]);
}
}
}
}
} while (!all_edges_found);
/* restore DDR idle state */
dram_init_command(DCMD_PREA(rank));
DPF(D_TRN, "Delay %03X %03X %03X %03X\n",
delay[0], delay[1], delay[2], delay[3]);
LEAVEFN();
}
/*
* This function will return a 32 bit mask that will be used to
* check for byte lane failures.
*/
uint32_t byte_lane_mask(struct mrc_params *mrc_params)
{
uint32_t j;
uint32_t ret_val = 0x00;
/*
* set ret_val based on NUM_BYTE_LANES such that you will check
* only BL0 in result
*
* (each bit in result represents a byte lane)
*/
for (j = 0; j < MAX_BYTE_LANES; j += NUM_BYTE_LANES)
ret_val |= (1 << ((j / NUM_BYTE_LANES) * NUM_BYTE_LANES));
/*
* HSD#235037
* need to adjust the mask for 16-bit mode
*/
if (mrc_params->channel_width == X16)
ret_val |= (ret_val << 2);
return ret_val;
}
/*
* Check memory executing simple write/read/verify at the specified address.
*
* Bits in the result indicate failure on specific byte lane.
*/
uint32_t check_rw_coarse(struct mrc_params *mrc_params, uint32_t address)
{
uint32_t result = 0;
uint8_t first_run = 0;
if (mrc_params->hte_setup) {
mrc_params->hte_setup = 0;
first_run = 1;
select_hte();
}
result = hte_basic_write_read(mrc_params, address, first_run,
WRITE_TRAIN);
DPF(D_TRN, "check_rw_coarse result is %x\n", result);
return result;
}
/*
* Check memory executing write/read/verify of many data patterns
* at the specified address. Bits in the result indicate failure
* on specific byte lane.
*/
uint32_t check_bls_ex(struct mrc_params *mrc_params, uint32_t address)
{
uint32_t result;
uint8_t first_run = 0;
if (mrc_params->hte_setup) {
mrc_params->hte_setup = 0;
first_run = 1;
select_hte();
}
result = hte_write_stress_bit_lanes(mrc_params, address, first_run);
DPF(D_TRN, "check_bls_ex result is %x\n", result);
return result;
}
/*
* 32-bit LFSR with characteristic polynomial: X^32 + X^22 +X^2 + X^1
*
* The function takes pointer to previous 32 bit value and
* modifies it to next value.
*/
void lfsr32(uint32_t *lfsr_ptr)
{
uint32_t bit;
uint32_t lfsr;
int i;
lfsr = *lfsr_ptr;
for (i = 0; i < 32; i++) {
bit = 1 ^ (lfsr & 1);
bit = bit ^ ((lfsr & 2) >> 1);
bit = bit ^ ((lfsr & 4) >> 2);
bit = bit ^ ((lfsr & 0x400000) >> 22);
lfsr = ((lfsr >> 1) | (bit << 31));
}
*lfsr_ptr = lfsr;
}
/* Clear the pointers in a given byte lane in a given channel */
void clear_pointers(void)
{
uint8_t channel;
uint8_t bl;
ENTERFN();
for (channel = 0; channel < NUM_CHANNELS; channel++) {
for (bl = 0; bl < NUM_BYTE_LANES; bl++) {
mrc_alt_write_mask(DDRPHY,
B01PTRCTL1 +
channel * DDRIODQ_CH_OFFSET +
(bl >> 1) * DDRIODQ_BL_OFFSET,
~(1 << 8), (1 << 8));
mrc_alt_write_mask(DDRPHY,
B01PTRCTL1 +
channel * DDRIODQ_CH_OFFSET +
(bl >> 1) * DDRIODQ_BL_OFFSET,
(1 << 8), (1 << 8));
}
}
LEAVEFN();
}
static void print_timings_internal(uint8_t algo, uint8_t channel, uint8_t rank,
uint8_t bl_divisor)
{
uint8_t bl;
switch (algo) {
case RCVN:
DPF(D_INFO, "\nRCVN[%02d:%02d]", channel, rank);
break;
case WDQS:
DPF(D_INFO, "\nWDQS[%02d:%02d]", channel, rank);
break;
case WDQX:
DPF(D_INFO, "\nWDQx[%02d:%02d]", channel, rank);
break;
case RDQS:
DPF(D_INFO, "\nRDQS[%02d:%02d]", channel, rank);
break;
case VREF:
DPF(D_INFO, "\nVREF[%02d:%02d]", channel, rank);
break;
case WCMD:
DPF(D_INFO, "\nWCMD[%02d:%02d]", channel, rank);
break;
case WCTL:
DPF(D_INFO, "\nWCTL[%02d:%02d]", channel, rank);
break;
case WCLK:
DPF(D_INFO, "\nWCLK[%02d:%02d]", channel, rank);
break;
default:
break;
}
for (bl = 0; bl < NUM_BYTE_LANES / bl_divisor; bl++) {
switch (algo) {
case RCVN:
DPF(D_INFO, " %03d", get_rcvn(channel, rank, bl));
break;
case WDQS:
DPF(D_INFO, " %03d", get_wdqs(channel, rank, bl));
break;
case WDQX:
DPF(D_INFO, " %03d", get_wdq(channel, rank, bl));
break;
case RDQS:
DPF(D_INFO, " %03d", get_rdqs(channel, rank, bl));
break;
case VREF:
DPF(D_INFO, " %03d", get_vref(channel, bl));
break;
case WCMD:
DPF(D_INFO, " %03d", get_wcmd(channel));
break;
case WCTL:
DPF(D_INFO, " %03d", get_wctl(channel, rank));
break;
case WCLK:
DPF(D_INFO, " %03d", get_wclk(channel, rank));
break;
default:
break;
}
}
}
void print_timings(struct mrc_params *mrc_params)
{
uint8_t algo;
uint8_t channel;
uint8_t rank;
uint8_t bl_divisor = (mrc_params->channel_width == X16) ? 2 : 1;
DPF(D_INFO, "\n---------------------------");
DPF(D_INFO, "\nALGO[CH:RK] BL0 BL1 BL2 BL3");
DPF(D_INFO, "\n===========================");
for (algo = 0; algo < MAX_ALGOS; algo++) {
for (channel = 0; channel < NUM_CHANNELS; channel++) {
if (mrc_params->channel_enables & (1 << channel)) {
for (rank = 0; rank < NUM_RANKS; rank++) {
if (mrc_params->rank_enables &
(1 << rank)) {
print_timings_internal(algo,
channel, rank,
bl_divisor);
}
}
}
}
}
DPF(D_INFO, "\n---------------------------");
DPF(D_INFO, "\n");
}