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u-boot-brain/arch/x86/cpu/quark/mrc_util.c
Tom Rini 83d290c56f SPDX: Convert all of our single license tags to Linux Kernel style 
When U-Boot started using SPDX tags we were among the early adopters and
there weren't a lot of other examples to borrow from.  So we picked the
area of the file that usually had a full license text and replaced it
with an appropriate SPDX-License-Identifier: entry.  Since then, the
Linux Kernel has adopted SPDX tags and they place it as the very first
line in a file (except where shebangs are used, then it's second line)
and with slightly different comment styles than us.

In part due to community overlap, in part due to better tag visibility
and in part for other minor reasons, switch over to that style.

This commit changes all instances where we have a single declared
license in the tag as both the before and after are identical in tag
contents.  There's also a few places where I found we did not have a tag
and have introduced one.

Signed-off-by: Tom Rini <trini@konsulko.com>
2018-05-07 09:34:12 -04:00

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// SPDX-License-Identifier: Intel
/*
* 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
*/
#include <common.h>
#include <asm/arch/device.h>
#include <asm/arch/mrc.h>
#include <asm/arch/msg_port.h>
#include <asm/arch/quark.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)
{
qrk_pci_write_config_dword(QUARK_HOST_BRIDGE, MSG_DATA_REG, data);
qrk_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");
}
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