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author | Kever Yang <kever.yang@rock-chips.com> | 2019-11-15 06:04:33 +0300 |
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committer | Kever Yang <kever.yang@rock-chips.com> | 2019-11-17 11:23:56 +0300 |
commit | 5d19ddf0dbee50f6bf92536c45ebd66173683c51 (patch) | |
tree | c8a0b801d3885edb5920e18ae969f776742f4708 /arch/arm/mach-rockchip/sdram.c | |
parent | 2a2f0b177c94457d25cded1bd1cbfd5835a7d032 (diff) | |
download | u-boot-5d19ddf0dbee50f6bf92536c45ebd66173683c51.tar.xz |
ram: rockchip: rename sdram_common.c/h to sdram.c
rename sdram_common.c in arch/arm/mach-rockchip to sdram.c;
so that we can use the file name sdram_common.c in dram driver for
better understand the code;
clean the related file who has use the header file at the same time.
Signed-off-by: YouMin Chen <cym@rock-chips.com>
Signed-off-by: Kever Yang <kever.yang@rock-chips.com>
Diffstat (limited to 'arch/arm/mach-rockchip/sdram.c')
-rw-r--r-- | arch/arm/mach-rockchip/sdram.c | 163 |
1 files changed, 163 insertions, 0 deletions
diff --git a/arch/arm/mach-rockchip/sdram.c b/arch/arm/mach-rockchip/sdram.c new file mode 100644 index 0000000000..acb1af765e --- /dev/null +++ b/arch/arm/mach-rockchip/sdram.c @@ -0,0 +1,163 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright (C) 2017 Rockchip Electronics Co., Ltd. + */ + +#include <common.h> +#include <dm.h> +#include <ram.h> +#include <asm/io.h> +#include <asm/arch-rockchip/sdram.h> +#include <dm/uclass-internal.h> + +DECLARE_GLOBAL_DATA_PTR; + +#define TRUST_PARAMETER_OFFSET (34 * 1024 * 1024) + +struct tos_parameter_t { + u32 version; + u32 checksum; + struct { + char name[8]; + s64 phy_addr; + u32 size; + u32 flags; + } tee_mem; + struct { + char name[8]; + s64 phy_addr; + u32 size; + u32 flags; + } drm_mem; + s64 reserve[8]; +}; + +int dram_init_banksize(void) +{ + size_t top = min((unsigned long)(gd->ram_size + CONFIG_SYS_SDRAM_BASE), + gd->ram_top); + +#ifdef CONFIG_ARM64 + /* Reserve 0x200000 for ATF bl31 */ + gd->bd->bi_dram[0].start = 0x200000; + gd->bd->bi_dram[0].size = top - gd->bd->bi_dram[0].start; +#else +#ifdef CONFIG_SPL_OPTEE + struct tos_parameter_t *tos_parameter; + + tos_parameter = (struct tos_parameter_t *)(CONFIG_SYS_SDRAM_BASE + + TRUST_PARAMETER_OFFSET); + + if (tos_parameter->tee_mem.flags == 1) { + gd->bd->bi_dram[0].start = CONFIG_SYS_SDRAM_BASE; + gd->bd->bi_dram[0].size = tos_parameter->tee_mem.phy_addr + - CONFIG_SYS_SDRAM_BASE; + gd->bd->bi_dram[1].start = tos_parameter->tee_mem.phy_addr + + tos_parameter->tee_mem.size; + gd->bd->bi_dram[1].size = gd->bd->bi_dram[0].start + + top - gd->bd->bi_dram[1].start; + } else { + gd->bd->bi_dram[0].start = CONFIG_SYS_SDRAM_BASE; + gd->bd->bi_dram[0].size = 0x8400000; + /* Reserve 32M for OPTEE with TA */ + gd->bd->bi_dram[1].start = CONFIG_SYS_SDRAM_BASE + + gd->bd->bi_dram[0].size + 0x2000000; + gd->bd->bi_dram[1].size = gd->bd->bi_dram[0].start + + top - gd->bd->bi_dram[1].start; + } +#else + gd->bd->bi_dram[0].start = CONFIG_SYS_SDRAM_BASE; + gd->bd->bi_dram[0].size = top - gd->bd->bi_dram[0].start; +#endif +#endif + + return 0; +} + +size_t rockchip_sdram_size(phys_addr_t reg) +{ + u32 rank, col, bk, cs0_row, cs1_row, bw, row_3_4; + size_t chipsize_mb = 0; + size_t size_mb = 0; + u32 ch; + + u32 sys_reg = readl(reg); + u32 ch_num = 1 + ((sys_reg >> SYS_REG_NUM_CH_SHIFT) + & SYS_REG_NUM_CH_MASK); + + debug("%s %x %x\n", __func__, (u32)reg, sys_reg); + for (ch = 0; ch < ch_num; ch++) { + rank = 1 + (sys_reg >> SYS_REG_RANK_SHIFT(ch) & + SYS_REG_RANK_MASK); + col = 9 + (sys_reg >> SYS_REG_COL_SHIFT(ch) & SYS_REG_COL_MASK); + bk = 3 - ((sys_reg >> SYS_REG_BK_SHIFT(ch)) & SYS_REG_BK_MASK); + cs0_row = 13 + (sys_reg >> SYS_REG_CS0_ROW_SHIFT(ch) & + SYS_REG_CS0_ROW_MASK); + cs1_row = 13 + (sys_reg >> SYS_REG_CS1_ROW_SHIFT(ch) & + SYS_REG_CS1_ROW_MASK); + bw = (2 >> ((sys_reg >> SYS_REG_BW_SHIFT(ch)) & + SYS_REG_BW_MASK)); + row_3_4 = sys_reg >> SYS_REG_ROW_3_4_SHIFT(ch) & + SYS_REG_ROW_3_4_MASK; + + chipsize_mb = (1 << (cs0_row + col + bk + bw - 20)); + + if (rank > 1) + chipsize_mb += chipsize_mb >> (cs0_row - cs1_row); + if (row_3_4) + chipsize_mb = chipsize_mb * 3 / 4; + size_mb += chipsize_mb; + debug("rank %d col %d bk %d cs0_row %d bw %d row_3_4 %d\n", + rank, col, bk, cs0_row, bw, row_3_4); + } + + /* + * This is workaround for issue we can't get correct size for 4GB ram + * in 32bit system and available before we really need ram space + * out of 4GB, eg.enable ARM LAPE(rk3288 supports 8GB ram). + * The size of 4GB is '0x1 00000000', and this value will be truncated + * to 0 in 32bit system, and system can not get correct ram size. + * Rockchip SoCs reserve a blob of space for peripheral near 4GB, + * and we are now setting SDRAM_MAX_SIZE as max available space for + * ram in 4GB, so we can use this directly to workaround the issue. + * TODO: + * 1. update correct value for SDRAM_MAX_SIZE as what dram + * controller sees. + * 2. update board_get_usable_ram_top() and dram_init_banksize() + * to reserve memory for peripheral space after previous update. + */ + if (size_mb > (SDRAM_MAX_SIZE >> 20)) + size_mb = (SDRAM_MAX_SIZE >> 20); + + return (size_t)size_mb << 20; +} + +int dram_init(void) +{ + struct ram_info ram; + struct udevice *dev; + int ret; + + ret = uclass_get_device(UCLASS_RAM, 0, &dev); + if (ret) { + debug("DRAM init failed: %d\n", ret); + return ret; + } + ret = ram_get_info(dev, &ram); + if (ret) { + debug("Cannot get DRAM size: %d\n", ret); + return ret; + } + gd->ram_size = ram.size; + debug("SDRAM base=%lx, size=%lx\n", + (unsigned long)ram.base, (unsigned long)ram.size); + + return 0; +} + +ulong board_get_usable_ram_top(ulong total_size) +{ + unsigned long top = CONFIG_SYS_SDRAM_BASE + SDRAM_MAX_SIZE; + + return (gd->ram_top > top) ? top : gd->ram_top; +} |