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https://github.com/AsahiLinux/u-boot
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213 lines
6 KiB
C
213 lines
6 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (C) 2017 Rockchip Electronics Co., Ltd.
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*/
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#include <common.h>
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#include <dm.h>
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#include <init.h>
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#include <log.h>
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#include <ram.h>
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#include <asm/global_data.h>
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#include <asm/io.h>
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#include <asm/arch-rockchip/sdram.h>
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#include <dm/uclass-internal.h>
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DECLARE_GLOBAL_DATA_PTR;
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#define TRUST_PARAMETER_OFFSET (34 * 1024 * 1024)
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struct tos_parameter_t {
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u32 version;
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u32 checksum;
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struct {
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char name[8];
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s64 phy_addr;
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u32 size;
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u32 flags;
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} tee_mem;
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struct {
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char name[8];
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s64 phy_addr;
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u32 size;
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u32 flags;
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} drm_mem;
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s64 reserve[8];
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};
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int dram_init_banksize(void)
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{
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size_t top = min((unsigned long)(gd->ram_size + CONFIG_SYS_SDRAM_BASE),
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(unsigned long)(gd->ram_top));
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#ifdef CONFIG_ARM64
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/* Reserve 0x200000 for ATF bl31 */
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gd->bd->bi_dram[0].start = 0x200000;
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gd->bd->bi_dram[0].size = top - gd->bd->bi_dram[0].start;
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#else
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#ifdef CONFIG_SPL_OPTEE
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struct tos_parameter_t *tos_parameter;
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tos_parameter = (struct tos_parameter_t *)(CONFIG_SYS_SDRAM_BASE +
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TRUST_PARAMETER_OFFSET);
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if (tos_parameter->tee_mem.flags == 1) {
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gd->bd->bi_dram[0].start = CONFIG_SYS_SDRAM_BASE;
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gd->bd->bi_dram[0].size = tos_parameter->tee_mem.phy_addr
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- CONFIG_SYS_SDRAM_BASE;
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gd->bd->bi_dram[1].start = tos_parameter->tee_mem.phy_addr +
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tos_parameter->tee_mem.size;
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gd->bd->bi_dram[1].size = top - gd->bd->bi_dram[1].start;
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} else {
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gd->bd->bi_dram[0].start = CONFIG_SYS_SDRAM_BASE;
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gd->bd->bi_dram[0].size = 0x8400000;
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/* Reserve 32M for OPTEE with TA */
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gd->bd->bi_dram[1].start = CONFIG_SYS_SDRAM_BASE
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+ gd->bd->bi_dram[0].size + 0x2000000;
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gd->bd->bi_dram[1].size = top - gd->bd->bi_dram[1].start;
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}
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#else
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gd->bd->bi_dram[0].start = CONFIG_SYS_SDRAM_BASE;
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gd->bd->bi_dram[0].size = top - gd->bd->bi_dram[0].start;
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#endif
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#endif
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return 0;
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}
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size_t rockchip_sdram_size(phys_addr_t reg)
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{
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u32 rank, cs0_col, bk, cs0_row, cs1_row, bw, row_3_4;
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size_t chipsize_mb = 0;
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size_t size_mb = 0;
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u32 ch;
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u32 cs1_col = 0;
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u32 bg = 0;
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u32 dbw, dram_type;
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u32 sys_reg2 = readl(reg);
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u32 sys_reg3 = readl(reg + 4);
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u32 ch_num = 1 + ((sys_reg2 >> SYS_REG_NUM_CH_SHIFT)
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& SYS_REG_NUM_CH_MASK);
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dram_type = (sys_reg2 >> SYS_REG_DDRTYPE_SHIFT) & SYS_REG_DDRTYPE_MASK;
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debug("%s %x %x\n", __func__, (u32)reg, sys_reg2);
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for (ch = 0; ch < ch_num; ch++) {
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rank = 1 + (sys_reg2 >> SYS_REG_RANK_SHIFT(ch) &
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SYS_REG_RANK_MASK);
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cs0_col = 9 + (sys_reg2 >> SYS_REG_COL_SHIFT(ch) &
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SYS_REG_COL_MASK);
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cs1_col = cs0_col;
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bk = 3 - ((sys_reg2 >> SYS_REG_BK_SHIFT(ch)) & SYS_REG_BK_MASK);
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if ((sys_reg3 >> SYS_REG_VERSION_SHIFT &
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SYS_REG_VERSION_MASK) == 0x2) {
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cs1_col = 9 + (sys_reg3 >> SYS_REG_CS1_COL_SHIFT(ch) &
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SYS_REG_CS1_COL_MASK);
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if (((sys_reg3 >> SYS_REG_EXTEND_CS0_ROW_SHIFT(ch) &
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SYS_REG_EXTEND_CS0_ROW_MASK) << 2) + (sys_reg2 >>
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SYS_REG_CS0_ROW_SHIFT(ch) &
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SYS_REG_CS0_ROW_MASK) == 7)
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cs0_row = 12;
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else
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cs0_row = 13 + (sys_reg2 >>
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SYS_REG_CS0_ROW_SHIFT(ch) &
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SYS_REG_CS0_ROW_MASK) +
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((sys_reg3 >>
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SYS_REG_EXTEND_CS0_ROW_SHIFT(ch) &
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SYS_REG_EXTEND_CS0_ROW_MASK) << 2);
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if (((sys_reg3 >> SYS_REG_EXTEND_CS1_ROW_SHIFT(ch) &
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SYS_REG_EXTEND_CS1_ROW_MASK) << 2) + (sys_reg2 >>
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SYS_REG_CS1_ROW_SHIFT(ch) &
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SYS_REG_CS1_ROW_MASK) == 7)
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cs1_row = 12;
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else
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cs1_row = 13 + (sys_reg2 >>
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SYS_REG_CS1_ROW_SHIFT(ch) &
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SYS_REG_CS1_ROW_MASK) +
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((sys_reg3 >>
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SYS_REG_EXTEND_CS1_ROW_SHIFT(ch) &
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SYS_REG_EXTEND_CS1_ROW_MASK) << 2);
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} else {
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cs0_row = 13 + (sys_reg2 >> SYS_REG_CS0_ROW_SHIFT(ch) &
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SYS_REG_CS0_ROW_MASK);
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cs1_row = 13 + (sys_reg2 >> SYS_REG_CS1_ROW_SHIFT(ch) &
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SYS_REG_CS1_ROW_MASK);
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}
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bw = (2 >> ((sys_reg2 >> SYS_REG_BW_SHIFT(ch)) &
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SYS_REG_BW_MASK));
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row_3_4 = sys_reg2 >> SYS_REG_ROW_3_4_SHIFT(ch) &
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SYS_REG_ROW_3_4_MASK;
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if (dram_type == DDR4) {
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dbw = (sys_reg2 >> SYS_REG_DBW_SHIFT(ch)) &
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SYS_REG_DBW_MASK;
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bg = (dbw == 2) ? 2 : 1;
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}
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chipsize_mb = (1 << (cs0_row + cs0_col + bk + bg + bw - 20));
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if (rank > 1)
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chipsize_mb += chipsize_mb >> ((cs0_row - cs1_row) +
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(cs0_col - cs1_col));
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if (row_3_4)
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chipsize_mb = chipsize_mb * 3 / 4;
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size_mb += chipsize_mb;
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if (rank > 1)
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debug("rank %d cs0_col %d cs1_col %d bk %d cs0_row %d\
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cs1_row %d bw %d row_3_4 %d\n",
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rank, cs0_col, cs1_col, bk, cs0_row,
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cs1_row, bw, row_3_4);
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else
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debug("rank %d cs0_col %d bk %d cs0_row %d\
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bw %d row_3_4 %d\n",
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rank, cs0_col, bk, cs0_row,
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bw, row_3_4);
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}
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/*
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* This is workaround for issue we can't get correct size for 4GB ram
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* in 32bit system and available before we really need ram space
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* out of 4GB, eg.enable ARM LAPE(rk3288 supports 8GB ram).
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* The size of 4GB is '0x1 00000000', and this value will be truncated
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* to 0 in 32bit system, and system can not get correct ram size.
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* Rockchip SoCs reserve a blob of space for peripheral near 4GB,
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* and we are now setting SDRAM_MAX_SIZE as max available space for
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* ram in 4GB, so we can use this directly to workaround the issue.
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* TODO:
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* 1. update correct value for SDRAM_MAX_SIZE as what dram
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* controller sees.
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* 2. update board_get_usable_ram_top() and dram_init_banksize()
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* to reserve memory for peripheral space after previous update.
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*/
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if (size_mb > (SDRAM_MAX_SIZE >> 20))
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size_mb = (SDRAM_MAX_SIZE >> 20);
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return (size_t)size_mb << 20;
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}
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int dram_init(void)
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{
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struct ram_info ram;
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struct udevice *dev;
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int ret;
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ret = uclass_get_device(UCLASS_RAM, 0, &dev);
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if (ret) {
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debug("DRAM init failed: %d\n", ret);
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return ret;
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}
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ret = ram_get_info(dev, &ram);
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if (ret) {
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debug("Cannot get DRAM size: %d\n", ret);
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return ret;
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}
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gd->ram_size = ram.size;
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debug("SDRAM base=%lx, size=%lx\n",
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(unsigned long)ram.base, (unsigned long)ram.size);
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return 0;
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}
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ulong board_get_usable_ram_top(ulong total_size)
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{
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unsigned long top = CONFIG_SYS_SDRAM_BASE + SDRAM_MAX_SIZE;
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return (gd->ram_top > top) ? top : gd->ram_top;
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}
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