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// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
/*
* (C) Copyright 2019 Rockchip Electronics Co., Ltd
* (C) Copyright 2019 Amarula Solutions.
* Author: Jagan Teki <jagan@amarulasolutions.com>
*/
#include <common.h>
#include <debug_uart.h>
#include <asm/arch-rockchip/sdram.h>
void sdram_print_dram_type(unsigned char dramtype)
{
switch (dramtype) {
case DDR3:
printascii("DDR3");
break;
case DDR4:
printascii("DDR4");
break;
case LPDDR2:
printascii("LPDDR2");
break;
case LPDDR3:
printascii("LPDDR3");
break;
case LPDDR4:
printascii("LPDDR4");
break;
default:
printascii("Unknown Device");
break;
}
}
/**
* cs = 0, cs0
* cs = 1, cs1
* cs => 2, cs0+cs1
* note: it didn't consider about row_3_4
*/
u64 sdram_get_cs_cap(struct sdram_cap_info *cap_info, u32 cs, u32 dram_type)
{
u32 bg;
u64 cap[2];
if (dram_type == DDR4)
/* DDR4 8bit dram BG = 2(4bank groups),
* 16bit dram BG = 1 (2 bank groups)
*/
bg = (cap_info->dbw == 0) ? 2 : 1;
else
bg = 0;
cap[0] = 1llu << (cap_info->bw + cap_info->col +
bg + cap_info->bk + cap_info->cs0_row);
if (cap_info->rank == 2)
cap[1] = 1llu << (cap_info->bw + cap_info->col +
bg + cap_info->bk + cap_info->cs1_row);
else
cap[1] = 0;
if (cs == 0)
return cap[0];
else if (cs == 1)
return cap[1];
else
return (cap[0] + cap[1]);
}
void sdram_print_ddr_info(struct sdram_cap_info *cap_info,
struct sdram_base_params *base)
{
u32 bg, cap;
bg = (cap_info->dbw == 0) ? 2 : 1;
sdram_print_dram_type(base->dramtype);
printascii(", ");
printdec(base->ddr_freq);
printascii("MHz\n");
printascii("BW=");
printdec(8 << cap_info->bw);
printascii(" Col=");
printdec(cap_info->col);
printascii(" Bk=");
printdec(0x1 << cap_info->bk);
if (base->dramtype == DDR4) {
printascii(" BG=");
printdec(1 << bg);
}
printascii(" CS0 Row=");
printdec(cap_info->cs0_row);
if (cap_info->rank > 1) {
printascii(" CS1 Row=");
printdec(cap_info->cs1_row);
}
printascii(" CS=");
printdec(cap_info->rank);
printascii(" Die BW=");
printdec(8 << cap_info->dbw);
cap = sdram_get_cs_cap(cap_info, 3, base->dramtype);
if (cap_info->row_3_4)
cap = cap * 3 / 4;
printascii(" Size=");
printdec(cap >> 20);
printascii("MB\n");
}
void sdram_print_stride(unsigned int stride)
{
switch (stride) {
case 0xc:
printf("128B stride\n");
break;
case 5:
case 9:
case 0xd:
case 0x11:
case 0x19:
printf("256B stride\n");
break;
case 0xa:
case 0xe:
case 0x12:
printf("512B stride\n");
break;
case 0xf:
printf("4K stride\n");
break;
case 0x1f:
printf("32MB + 256B stride\n");
break;
default:
printf("no stride\n");
}
}
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