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https://github.com/AsahiLinux/u-boot
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99 lines
2.4 KiB
C
99 lines
2.4 KiB
C
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// SPDX-License-Identifier: GPL-2.0+
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#include <common.h>
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#include <asm/io.h>
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#include <fsl_ddr_sdram.h>
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DECLARE_GLOBAL_DATA_PTR;
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#define DCFG_GPPORCR1 0x20
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#define GPPORCR1_MEM_MASK (0x7 << 5)
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#define GPPORCR1_MEM_512MB_CS0 (0x0 << 5)
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#define GPPORCR1_MEM_1GB_CS0 (0x1 << 5)
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#define GPPORCR1_MEM_2GB_CS0 (0x2 << 5)
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#define GPPORCR1_MEM_4GB_CS0_1 (0x3 << 5)
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#define GPPORCR1_MEM_4GB_CS0_2 (0x4 << 5)
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#define GPPORCR1_MEM_8GB_CS0_1_2_3 (0x5 << 5)
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#define GPPORCR1_MEM_8GB_CS0_1 (0x6 << 5)
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static fsl_ddr_cfg_regs_t __maybe_unused ddr_cfg_regs = {
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.cs[0].bnds = 0x0000007f,
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.cs[0].config = 0x80044402,
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.cs[1].bnds = 0x008000ff,
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.cs[1].config = 0x80004402,
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.timing_cfg_0 = 0x9011010c,
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.timing_cfg_3 = 0x010c1000,
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.timing_cfg_1 = 0xbcb48c66,
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.timing_cfg_2 = 0x0fc0d118,
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.ddr_sdram_cfg = 0xe70c000c,
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.ddr_sdram_cfg_2 = 0x24401111,
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.ddr_sdram_mode = 0x00441c70,
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.ddr_sdram_mode_3 = 0x00001c70,
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.ddr_sdram_mode_5 = 0x00001c70,
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.ddr_sdram_mode_7 = 0x00001c70,
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.ddr_sdram_mode_2 = 0x00180000,
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.ddr_sdram_mode_4 = 0x00180000,
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.ddr_sdram_mode_6 = 0x00180000,
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.ddr_sdram_mode_8 = 0x00180000,
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.ddr_sdram_interval = 0x0c30030c,
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.ddr_data_init = 0xdeadbeef,
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.ddr_sdram_clk_cntl = 0x02400000,
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.timing_cfg_4 = 0x00000001,
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.timing_cfg_5 = 0x04401400,
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.ddr_zq_cntl = 0x89080600,
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.ddr_wrlvl_cntl = 0x8675f606,
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.ddr_wrlvl_cntl_2 = 0x04080700,
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.ddr_wrlvl_cntl_3 = 0x00000009,
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.ddr_cdr1 = 0x80040000,
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.ddr_cdr2 = 0x0000bc01,
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};
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int fsl_initdram(void)
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{
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u32 gpporcr1 = in_le32(DCFG_BASE + DCFG_GPPORCR1);
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phys_size_t dram_size;
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switch (gpporcr1 & GPPORCR1_MEM_MASK) {
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case GPPORCR1_MEM_2GB_CS0:
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dram_size = 0x80000000;
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ddr_cfg_regs.cs[1].bnds = 0;
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ddr_cfg_regs.cs[1].config = 0;
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ddr_cfg_regs.cs[1].config_2 = 0;
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break;
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case GPPORCR1_MEM_4GB_CS0_1:
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dram_size = 0x100000000ULL;
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break;
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case GPPORCR1_MEM_512MB_CS0:
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dram_size = 0x20000000;
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fallthrough; /* for now */
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case GPPORCR1_MEM_1GB_CS0:
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dram_size = 0x40000000;
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fallthrough; /* for now */
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case GPPORCR1_MEM_4GB_CS0_2:
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dram_size = 0x100000000ULL;
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fallthrough; /* for now */
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case GPPORCR1_MEM_8GB_CS0_1:
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case GPPORCR1_MEM_8GB_CS0_1_2_3:
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dram_size = 0x200000000ULL;
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fallthrough; /* for now */
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default:
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panic("Unsupported memory configuration (%08x)\n",
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gpporcr1 & GPPORCR1_MEM_MASK);
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break;
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}
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if (!IS_ENABLED(CONFIG_SPL) || IS_ENABLED(CONFIG_SPL_BUILD))
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fsl_ddr_set_memctl_regs(&ddr_cfg_regs, 0, 0);
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gd->ram_size = dram_size;
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return 0;
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}
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