m54451evb.c (f78ced3028d4130b24a318943a70cf5584ab16f4) m54451evb.c (6d0f6bcf337c5261c08fabe12982178c2c489d76)
1/*
2 * (C) Copyright 2000-2003
3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
4 *
5 * Copyright (C) 2004-2008 Freescale Semiconductor, Inc.
6 * TsiChung Liew (Tsi-Chung.Liew@freescale.com)
7 *
8 * See file CREDITS for list of people who contributed to this

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44phys_size_t initdram(int board_type)
45{
46 u32 dramsize;
47#ifdef CONFIG_CF_SBF
48 /*
49 * Serial Boot: The dram is already initialized in start.S
50 * only require to return DRAM size
51 */
1/*
2 * (C) Copyright 2000-2003
3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
4 *
5 * Copyright (C) 2004-2008 Freescale Semiconductor, Inc.
6 * TsiChung Liew (Tsi-Chung.Liew@freescale.com)
7 *
8 * See file CREDITS for list of people who contributed to this

--- 35 unchanged lines hidden (view full) ---

44phys_size_t initdram(int board_type)
45{
46 u32 dramsize;
47#ifdef CONFIG_CF_SBF
48 /*
49 * Serial Boot: The dram is already initialized in start.S
50 * only require to return DRAM size
51 */
52 dramsize = CFG_SDRAM_SIZE * 0x100000;
52 dramsize = CONFIG_SYS_SDRAM_SIZE * 0x100000;
53#else
54 volatile sdramc_t *sdram = (volatile sdramc_t *)(MMAP_SDRAM);
55 volatile gpio_t *gpio = (volatile gpio_t *)(MMAP_GPIO);
56 u32 i;
57
53#else
54 volatile sdramc_t *sdram = (volatile sdramc_t *)(MMAP_SDRAM);
55 volatile gpio_t *gpio = (volatile gpio_t *)(MMAP_GPIO);
56 u32 i;
57
58 dramsize = CFG_SDRAM_SIZE * 0x100000;
58 dramsize = CONFIG_SYS_SDRAM_SIZE * 0x100000;
59
59
60 if ((sdram->sdcfg1 == CFG_SDRAM_CFG1) &&
61 (sdram->sdcfg2 == CFG_SDRAM_CFG2))
60 if ((sdram->sdcfg1 == CONFIG_SYS_SDRAM_CFG1) &&
61 (sdram->sdcfg2 == CONFIG_SYS_SDRAM_CFG2))
62 return dramsize;
63
64 for (i = 0x13; i < 0x20; i++) {
65 if (dramsize == (1 << i))
66 break;
67 }
68 i--;
69
62 return dramsize;
63
64 for (i = 0x13; i < 0x20; i++) {
65 if (dramsize == (1 << i))
66 break;
67 }
68 i--;
69
70 gpio->mscr_sdram = CFG_SDRAM_DRV_STRENGTH;
70 gpio->mscr_sdram = CONFIG_SYS_SDRAM_DRV_STRENGTH;
71
71
72 sdram->sdcs0 = (CFG_SDRAM_BASE | i);
72 sdram->sdcs0 = (CONFIG_SYS_SDRAM_BASE | i);
73
73
74 sdram->sdcfg1 = CFG_SDRAM_CFG1;
75 sdram->sdcfg2 = CFG_SDRAM_CFG2;
74 sdram->sdcfg1 = CONFIG_SYS_SDRAM_CFG1;
75 sdram->sdcfg2 = CONFIG_SYS_SDRAM_CFG2;
76
77 udelay(200);
78
79 /* Issue PALL */
76
77 udelay(200);
78
79 /* Issue PALL */
80 sdram->sdcr = CFG_SDRAM_CTRL | 2;
80 sdram->sdcr = CONFIG_SYS_SDRAM_CTRL | 2;
81 __asm__("nop");
82
83 /* Perform two refresh cycles */
81 __asm__("nop");
82
83 /* Perform two refresh cycles */
84 sdram->sdcr = CFG_SDRAM_CTRL | 4;
84 sdram->sdcr = CONFIG_SYS_SDRAM_CTRL | 4;
85 __asm__("nop");
85 __asm__("nop");
86 sdram->sdcr = CFG_SDRAM_CTRL | 4;
86 sdram->sdcr = CONFIG_SYS_SDRAM_CTRL | 4;
87 __asm__("nop");
88
89 /* Issue LEMR */
87 __asm__("nop");
88
89 /* Issue LEMR */
90 sdram->sdmr = CFG_SDRAM_MODE;
90 sdram->sdmr = CONFIG_SYS_SDRAM_MODE;
91 __asm__("nop");
91 __asm__("nop");
92 sdram->sdmr = CFG_SDRAM_EMOD;
92 sdram->sdmr = CONFIG_SYS_SDRAM_EMOD;
93 __asm__("nop");
94
93 __asm__("nop");
94
95 sdram->sdcr = (CFG_SDRAM_CTRL & ~0x80000000) | 0x10000000;
95 sdram->sdcr = (CONFIG_SYS_SDRAM_CTRL & ~0x80000000) | 0x10000000;
96
97 udelay(100);
98#endif
99 return (dramsize);
100};
101
102int testdram(void)
103{
104 /* TODO: XXX XXX XXX */
105 printf("DRAM test not implemented!\n");
106
107 return (0);
108}
96
97 udelay(100);
98#endif
99 return (dramsize);
100};
101
102int testdram(void)
103{
104 /* TODO: XXX XXX XXX */
105 printf("DRAM test not implemented!\n");
106
107 return (0);
108}