2 * Copyright 2011 Freescale Semiconductor, Inc.
4 * SPDX-License-Identifier: GPL-2.0+
12 #include <asm/immap_85xx.h>
13 #include <asm/fsl_ddr_sdram.h>
14 #include <asm/fsl_law.h>
15 #include <asm/global_data.h>
17 DECLARE_GLOBAL_DATA_PTR
;
22 ccsr_ddr_t
*ddr
= (ccsr_ddr_t
*)CONFIG_SYS_MPC8xxx_DDR_ADDR
;
23 ccsr_gur_t
*gur
= (void *)CONFIG_SYS_MPC85xx_GUTS_ADDR
;
25 unsigned long ddr_freq_mhz
;
27 ddr_ratio
= in_be32(&gur
->porpllsr
) & MPC85xx_PORPLLSR_DDR_RATIO
;
28 ddr_ratio
= ddr_ratio
>> MPC85xx_PORPLLSR_DDR_RATIO_SHIFT
;
29 ddr_freq_mhz
= (CONFIG_SYS_CLK_FREQ
* ddr_ratio
) / 0x1000000;
32 u32 svr
= SVR_SOC_VER(mfspr(SPRN_SVR
));
34 __raw_writel(CONFIG_SYS_DDR_CONTROL
| SDRAM_CFG_32_BE
, &ddr
->sdram_cfg
);
35 __raw_writel(CONFIG_SYS_DDR_CS0_BNDS
, &ddr
->cs0_bnds
);
36 __raw_writel(CONFIG_SYS_DDR_CS0_CONFIG
, &ddr
->cs0_config
);
37 __raw_writel(CONFIG_SYS_DDR_CONTROL_2
, &ddr
->sdram_cfg_2
);
38 __raw_writel(CONFIG_SYS_DDR_DATA_INIT
, &ddr
->sdram_data_init
);
40 if (ddr_freq_mhz
< 700) {
41 __raw_writel(CONFIG_SYS_DDR_TIMING_3_667
, &ddr
->timing_cfg_3
);
42 __raw_writel(CONFIG_SYS_DDR_TIMING_0_667
, &ddr
->timing_cfg_0
);
43 __raw_writel(CONFIG_SYS_DDR_TIMING_1_667
, &ddr
->timing_cfg_1
);
44 __raw_writel(CONFIG_SYS_DDR_TIMING_2_667
, &ddr
->timing_cfg_2
);
45 __raw_writel(CONFIG_SYS_DDR_MODE_1_667
, &ddr
->sdram_mode
);
46 __raw_writel(CONFIG_SYS_DDR_MODE_2_667
, &ddr
->sdram_mode_2
);
47 __raw_writel(CONFIG_SYS_DDR_INTERVAL_667
, &ddr
->sdram_interval
);
48 __raw_writel(CONFIG_SYS_DDR_CLK_CTRL_667
, &ddr
->sdram_clk_cntl
);
49 __raw_writel(CONFIG_SYS_DDR_WRLVL_CONTROL_667
, &ddr
->ddr_wrlvl_cntl
);
51 __raw_writel(CONFIG_SYS_DDR_TIMING_3_800
, &ddr
->timing_cfg_3
);
52 __raw_writel(CONFIG_SYS_DDR_TIMING_0_800
, &ddr
->timing_cfg_0
);
53 __raw_writel(CONFIG_SYS_DDR_TIMING_1_800
, &ddr
->timing_cfg_1
);
54 __raw_writel(CONFIG_SYS_DDR_TIMING_2_800
, &ddr
->timing_cfg_2
);
55 __raw_writel(CONFIG_SYS_DDR_MODE_1_800
, &ddr
->sdram_mode
);
56 __raw_writel(CONFIG_SYS_DDR_MODE_2_800
, &ddr
->sdram_mode_2
);
57 __raw_writel(CONFIG_SYS_DDR_INTERVAL_800
, &ddr
->sdram_interval
);
58 __raw_writel(CONFIG_SYS_DDR_CLK_CTRL_800
, &ddr
->sdram_clk_cntl
);
59 __raw_writel(CONFIG_SYS_DDR_WRLVL_CONTROL_800
, &ddr
->ddr_wrlvl_cntl
);
62 __raw_writel(CONFIG_SYS_DDR_TIMING_4
, &ddr
->timing_cfg_4
);
63 __raw_writel(CONFIG_SYS_DDR_TIMING_5
, &ddr
->timing_cfg_5
);
64 __raw_writel(CONFIG_SYS_DDR_ZQ_CONTROL
, &ddr
->ddr_zq_cntl
);
66 /* P1014 and it's derivatives support max 16bit DDR width */
67 if (svr
== SVR_P1014
) {
68 __raw_writel(ddr
->sdram_cfg
& ~SDRAM_CFG_DBW_MASK
, &ddr
->sdram_cfg
);
69 __raw_writel(ddr
->sdram_cfg
| SDRAM_CFG_16_BE
, &ddr
->sdram_cfg
);
70 /* For CS0_BNDS we divide the start and end address by 2, so we can just
71 * shift the entire register to achieve the desired result and the mask
72 * the value so we don't write reserved fields */
73 __raw_writel((CONFIG_SYS_DDR_CS0_BNDS
>> 1) & 0x0fff0fff, &ddr
->cs0_bnds
);
76 asm volatile("sync;isync");
79 /* Let the controller go */
80 out_be32(&ddr
->sdram_cfg
, in_be32(&ddr
->sdram_cfg
) | SDRAM_CFG_MEM_EN
);
82 set_next_law(CONFIG_SYS_NAND_DDR_LAW
, LAW_SIZE_1G
, LAW_TRGT_IF_DDR_1
);
85 void board_init_f(ulong bootflag
)
88 ccsr_gur_t
*gur
= (void *)CONFIG_SYS_MPC85xx_GUTS_ADDR
;
90 /* initialize selected port with appropriate baud rate */
91 plat_ratio
= in_be32(&gur
->porpllsr
) & MPC85xx_PORPLLSR_PLAT_RATIO
;
93 gd
->bus_clk
= CONFIG_SYS_CLK_FREQ
* plat_ratio
;
95 NS16550_init((NS16550_t
)CONFIG_SYS_NS16550_COM1
,
96 gd
->bus_clk
/ 16 / CONFIG_BAUDRATE
);
98 puts("\nNAND boot... ");
100 /* Initialize the DDR3 */
103 /* copy code to RAM and jump to it - this should not return */
104 /* NOTE - code has to be copied out of NAND buffer before
105 * other blocks can be read.
108 relocate_code(CONFIG_SPL_RELOC_STACK
, 0, CONFIG_SPL_RELOC_TEXT_BASE
);
111 void board_init_r(gd_t
*gd
, ulong dest_addr
)
119 NS16550_putc((NS16550_t
)CONFIG_SYS_NS16550_COM1
, '\r');
121 NS16550_putc((NS16550_t
)CONFIG_SYS_NS16550_COM1
, c
);
124 void puts(const char *str
)