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Diffstat (limited to 'arch/blackfin/mach-bf538/head.S')
-rw-r--r-- | arch/blackfin/mach-bf538/head.S | 137 |
1 files changed, 0 insertions, 137 deletions
diff --git a/arch/blackfin/mach-bf538/head.S b/arch/blackfin/mach-bf538/head.S deleted file mode 100644 index 39013ec97008..000000000000 --- a/arch/blackfin/mach-bf538/head.S +++ /dev/null | |||
@@ -1,137 +0,0 @@ | |||
1 | /* | ||
2 | * File: arch/blackfin/mach-bf538/head.S | ||
3 | * Based on: | ||
4 | * Author: Jeff Dionne <jeff@uclinux.org> COPYRIGHT 1998 D. Jeff Dionne | ||
5 | * | ||
6 | * Created: 1998 | ||
7 | * Description: bf533 startup file | ||
8 | * | ||
9 | * Modified: | ||
10 | * Copyright 2004-2006 Analog Devices Inc. | ||
11 | * | ||
12 | * Bugs: Enter bugs at http://blackfin.uclinux.org/ | ||
13 | * | ||
14 | * This program is free software; you can redistribute it and/or modify | ||
15 | * it under the terms of the GNU General Public License as published by | ||
16 | * the Free Software Foundation; either version 2 of the License, or | ||
17 | * (at your option) any later version. | ||
18 | * | ||
19 | * This program is distributed in the hope that it will be useful, | ||
20 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
21 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
22 | * GNU General Public License for more details. | ||
23 | * | ||
24 | * You should have received a copy of the GNU General Public License | ||
25 | * along with this program; if not, see the file COPYING, or write | ||
26 | * to the Free Software Foundation, Inc., | ||
27 | * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | ||
28 | */ | ||
29 | |||
30 | #include <linux/linkage.h> | ||
31 | #include <linux/init.h> | ||
32 | #include <asm/blackfin.h> | ||
33 | #ifdef CONFIG_BFIN_KERNEL_CLOCK | ||
34 | #include <asm/mach-common/clocks.h> | ||
35 | #include <asm/mach/mem_init.h> | ||
36 | #endif | ||
37 | |||
38 | .section .l1.text | ||
39 | #ifdef CONFIG_BFIN_KERNEL_CLOCK | ||
40 | ENTRY(_start_dma_code) | ||
41 | p0.h = hi(SIC_IWR0); | ||
42 | p0.l = lo(SIC_IWR0); | ||
43 | r0.l = 0x1; | ||
44 | r0.h = 0x0; | ||
45 | [p0] = r0; | ||
46 | SSYNC; | ||
47 | |||
48 | /* | ||
49 | * Set PLL_CTL | ||
50 | * - [14:09] = MSEL[5:0] : CLKIN / VCO multiplication factors | ||
51 | * - [8] = BYPASS : BYPASS the PLL, run CLKIN into CCLK/SCLK | ||
52 | * - [7] = output delay (add 200ps of delay to mem signals) | ||
53 | * - [6] = input delay (add 200ps of input delay to mem signals) | ||
54 | * - [5] = PDWN : 1=All Clocks off | ||
55 | * - [3] = STOPCK : 1=Core Clock off | ||
56 | * - [1] = PLL_OFF : 1=Disable Power to PLL | ||
57 | * - [0] = DF : 1=Pass CLKIN/2 to PLL / 0=Pass CLKIN to PLL | ||
58 | * all other bits set to zero | ||
59 | */ | ||
60 | |||
61 | p0.h = hi(PLL_LOCKCNT); | ||
62 | p0.l = lo(PLL_LOCKCNT); | ||
63 | r0 = 0x300(Z); | ||
64 | w[p0] = r0.l; | ||
65 | ssync; | ||
66 | |||
67 | P2.H = hi(EBIU_SDGCTL); | ||
68 | P2.L = lo(EBIU_SDGCTL); | ||
69 | R0 = [P2]; | ||
70 | BITSET (R0, 24); | ||
71 | [P2] = R0; | ||
72 | SSYNC; | ||
73 | |||
74 | r0 = CONFIG_VCO_MULT & 63; /* Load the VCO multiplier */ | ||
75 | r0 = r0 << 9; /* Shift it over, */ | ||
76 | r1 = CLKIN_HALF; /* Do we need to divide CLKIN by 2?*/ | ||
77 | r0 = r1 | r0; | ||
78 | r1 = PLL_BYPASS; /* Bypass the PLL? */ | ||
79 | r1 = r1 << 8; /* Shift it over */ | ||
80 | r0 = r1 | r0; /* add them all together */ | ||
81 | #ifdef ANOMALY_05000265 | ||
82 | BITSET(r0, 15); /* Add 250 mV of hysteresis to SPORT input pins */ | ||
83 | #endif | ||
84 | |||
85 | p0.h = hi(PLL_CTL); | ||
86 | p0.l = lo(PLL_CTL); /* Load the address */ | ||
87 | cli r2; /* Disable interrupts */ | ||
88 | ssync; | ||
89 | w[p0] = r0.l; /* Set the value */ | ||
90 | idle; /* Wait for the PLL to stablize */ | ||
91 | sti r2; /* Enable interrupts */ | ||
92 | |||
93 | .Lcheck_again: | ||
94 | p0.h = hi(PLL_STAT); | ||
95 | p0.l = lo(PLL_STAT); | ||
96 | R0 = W[P0](Z); | ||
97 | CC = BITTST(R0,5); | ||
98 | if ! CC jump .Lcheck_again; | ||
99 | |||
100 | /* Configure SCLK & CCLK Dividers */ | ||
101 | r0 = (CONFIG_CCLK_ACT_DIV | CONFIG_SCLK_DIV); | ||
102 | p0.h = hi(PLL_DIV); | ||
103 | p0.l = lo(PLL_DIV); | ||
104 | w[p0] = r0.l; | ||
105 | ssync; | ||
106 | |||
107 | p0.l = lo(EBIU_SDRRC); | ||
108 | p0.h = hi(EBIU_SDRRC); | ||
109 | r0 = mem_SDRRC; | ||
110 | w[p0] = r0.l; | ||
111 | ssync; | ||
112 | |||
113 | P2.H = hi(EBIU_SDGCTL); | ||
114 | P2.L = lo(EBIU_SDGCTL); | ||
115 | R0 = [P2]; | ||
116 | BITCLR (R0, 24); | ||
117 | p0.h = hi(EBIU_SDSTAT); | ||
118 | p0.l = lo(EBIU_SDSTAT); | ||
119 | r2.l = w[p0]; | ||
120 | cc = bittst(r2,3); | ||
121 | if !cc jump .Lskip; | ||
122 | NOP; | ||
123 | BITSET (R0, 23); | ||
124 | .Lskip: | ||
125 | [P2] = R0; | ||
126 | SSYNC; | ||
127 | |||
128 | R0.L = lo(mem_SDGCTL); | ||
129 | R0.H = hi(mem_SDGCTL); | ||
130 | R1 = [p2]; | ||
131 | R1 = R1 | R0; | ||
132 | [P2] = R1; | ||
133 | SSYNC; | ||
134 | |||
135 | RTS; | ||
136 | ENDPROC(_start_dma_code) | ||
137 | #endif /* CONFIG_BFIN_KERNEL_CLOCK */ | ||