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git.ipfire.org Git - people/ms/u-boot.git/blob - board/galaxy5200/galaxy5200.c
3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
6 * Mark Jonas, Freescale Semiconductor, mark.jonas@motorola.com.
9 * Eric Schumann, Phytec Messtechnik GmbH
12 * Eric Millbrandt, DEKA Research and Development Corporation
14 * SPDX-License-Identifier: GPL-2.0+
22 #ifndef CONFIG_SYS_RAMBOOT
23 static void sdram_start(int hi_addr
)
25 volatile struct mpc5xxx_cdm
*cdm
=
26 (struct mpc5xxx_cdm
*)MPC5XXX_CDM
;
27 volatile struct mpc5xxx_sdram
*sdram
=
28 (struct mpc5xxx_sdram
*)MPC5XXX_SDRAM
;
30 long hi_addr_bit
= hi_addr
? 0x01000000 : 0;
32 /* unlock mode register */
33 out_be32 (&sdram
->ctrl
,
34 (SDRAM_CONTROL
| 0x80000000 | hi_addr_bit
));
36 /* precharge all banks */
37 out_be32 (&sdram
->ctrl
,
38 (SDRAM_CONTROL
| 0x80000002 | hi_addr_bit
));
41 /* set mode register: extended mode */
42 out_be32 (&sdram
->mode
, (SDRAM_EMODE
));
44 /* set mode register: reset DLL */
45 out_be32 (&sdram
->mode
, (SDRAM_MODE
| 0x04000000));
48 /* precharge all banks */
49 out_be32 (&sdram
->ctrl
,
50 (SDRAM_CONTROL
| 0x80000002 | hi_addr_bit
));
53 out_be32 (&sdram
->ctrl
,
54 (SDRAM_CONTROL
| 0x80000004 | hi_addr_bit
));
56 /* set mode register */
57 out_be32 (&sdram
->mode
, (SDRAM_MODE
));
59 /* normal operation */
60 out_be32 (&sdram
->ctrl
,
61 (SDRAM_CONTROL
| hi_addr_bit
));
63 /* set CDM clock enable register, set MPC5200B SDRAM bus */
64 /* to reduced driver strength */
65 out_be32 (&cdm
->clock_enable
, (0x00CFFFFF));
70 * ATTENTION: Although partially referenced initdram does NOT make
71 * real use of CONFIG_SYS_SDRAM_BASE. The code does not
72 * work if CONFIG_SYS_SDRAM_BASE
73 * is something else than 0x00000000.
76 phys_size_t
initdram(int board_type
)
78 volatile struct mpc5xxx_mmap_ctl
*mm
=
79 (struct mpc5xxx_mmap_ctl
*)CONFIG_SYS_MBAR
;
80 volatile struct mpc5xxx_sdram
*sdram
=
81 (struct mpc5xxx_sdram
*)MPC5XXX_SDRAM
;
84 #ifndef CONFIG_SYS_RAMBOOT
87 /* setup SDRAM chip selects */
89 out_be32 (&mm
->sdram0
, 0x0000001b);
91 out_be32 (&mm
->sdram1
, 0x10000000);
93 /* setup config registers */
94 out_be32 (&sdram
->config1
, SDRAM_CONFIG1
);
95 out_be32 (&sdram
->config2
, SDRAM_CONFIG2
);
97 /* find RAM size using SDRAM CS0 only */
99 test1
= get_ram_size((long *) CONFIG_SYS_SDRAM_BASE
, 0x10000000);
101 test2
= get_ram_size((long *) CONFIG_SYS_SDRAM_BASE
, 0x10000000);
108 /* memory smaller than 1MB is impossible */
109 if (dramsize
< (1 << 20))
112 /* set SDRAM CS0 size according to the amount of RAM found */
114 out_be32 (&mm
->sdram0
,
115 (0x13 + __builtin_ffs(dramsize
>> 20) - 1));
118 out_be32 (&mm
->sdram0
, 0);
121 #else /* CONFIG_SYS_RAMBOOT */
123 /* retrieve size of memory connected to SDRAM CS0 */
124 dramsize
= in_be32(&mm
->sdram0
) & 0xFF;
125 if (dramsize
>= 0x13)
126 dramsize
= (1 << (dramsize
- 0x13)) << 20;
130 /* retrieve size of memory connected to SDRAM CS1 */
131 dramsize2
= in_be32(&mm
->sdram1
) & 0xFF;
132 if (dramsize2
>= 0x13)
133 dramsize2
= (1 << (dramsize2
- 0x13)) << 20;
137 #endif /* CONFIG_SYS_RAMBOOT */
139 return dramsize
+ dramsize2
;
144 puts("Board: galaxy5200\n");
148 #if defined(CONFIG_OF_LIBFDT) && defined(CONFIG_OF_BOARD_SETUP)
149 int ft_board_setup(void *blob
, bd_t
*bd
)
151 ft_cpu_setup(blob
, bd
);
155 #endif /* defined(CONFIG_OF_LIBFDT) && defined(CONFIG_OF_BOARD_SETUP) */
157 #if defined(CONFIG_CMD_IDE) && defined(CONFIG_IDE_RESET)
159 void init_ide_reset (void)
161 volatile struct mpc5xxx_gpt
*gpt
= (struct mpc5xxx_gpt
*)MPC5XXX_GPT
;
162 debug ("init_ide_reset\n");
164 /* Configure TIMER_5 as GPIO output for ATA reset */
166 gpt
[5].emsr
= MPC5XXX_GPT_GPIO_OUT1
| MPC5XXX_GPT_TMS_GPIO
;
169 void ide_set_reset (int idereset
)
171 volatile struct mpc5xxx_gpt
*gpt
= (struct mpc5xxx_gpt
*)MPC5XXX_GPT
;
172 debug ("ide_reset(%d)\n", idereset
);
174 /* Configure TIMER_5 as GPIO output for ATA reset */
176 gpt
[5].emsr
= MPC5XXX_GPT_GPIO_OUT0
| MPC5XXX_GPT_TMS_GPIO
;
178 /* Make a delay. MPC5200 spec says 25 usec min */
181 gpt
[5].emsr
= MPC5XXX_GPT_GPIO_OUT1
| MPC5XXX_GPT_TMS_GPIO
;
185 #endif /* defined(CONFIG_CMD_IDE) && defined(CONFIG_IDE_RESET) */