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-rw-r--r--arch/blackfin/mach-bf548/head.S259
1 files changed, 0 insertions, 259 deletions
diff --git a/arch/blackfin/mach-bf548/head.S b/arch/blackfin/mach-bf548/head.S
index 06b9178cfcfe..e3000f70a26e 100644
--- a/arch/blackfin/mach-bf548/head.S
+++ b/arch/blackfin/mach-bf548/head.S
@@ -30,263 +30,11 @@
30#include <linux/linkage.h> 30#include <linux/linkage.h>
31#include <linux/init.h> 31#include <linux/init.h>
32#include <asm/blackfin.h> 32#include <asm/blackfin.h>
33#include <asm/trace.h>
34#ifdef CONFIG_BFIN_KERNEL_CLOCK 33#ifdef CONFIG_BFIN_KERNEL_CLOCK
35#include <asm/mach-common/clocks.h> 34#include <asm/mach-common/clocks.h>
36#include <asm/mach/mem_init.h> 35#include <asm/mach/mem_init.h>
37#endif 36#endif
38 37
39.extern ___bss_stop
40.extern ___bss_start
41.extern _bf53x_relocate_l1_mem
42
43#define INITIAL_STACK 0xFFB01000
44
45__INIT
46
47ENTRY(__start)
48 /* R0: argument of command line string, passed from uboot, save it */
49 R7 = R0;
50 /* Enable Cycle Counter and Nesting Of Interrupts */
51#ifdef CONFIG_BFIN_SCRATCH_REG_CYCLES
52 R0 = SYSCFG_SNEN;
53#else
54 R0 = SYSCFG_SNEN | SYSCFG_CCEN;
55#endif
56 SYSCFG = R0;
57 R0 = 0;
58
59 /* Clear Out All the data and pointer Registers*/
60 R1 = R0;
61 R2 = R0;
62 R3 = R0;
63 R4 = R0;
64 R5 = R0;
65 R6 = R0;
66
67 P0 = R0;
68 P1 = R0;
69 P2 = R0;
70 P3 = R0;
71 P4 = R0;
72 P5 = R0;
73
74 LC0 = r0;
75 LC1 = r0;
76 L0 = r0;
77 L1 = r0;
78 L2 = r0;
79 L3 = r0;
80
81 /* Clear Out All the DAG Registers*/
82 B0 = r0;
83 B1 = r0;
84 B2 = r0;
85 B3 = r0;
86
87 I0 = r0;
88 I1 = r0;
89 I2 = r0;
90 I3 = r0;
91
92 M0 = r0;
93 M1 = r0;
94 M2 = r0;
95 M3 = r0;
96
97 trace_buffer_init(p0,r0);
98 P0 = R1;
99 R0 = R1;
100
101 /* Turn off the icache */
102 p0.l = LO(IMEM_CONTROL);
103 p0.h = HI(IMEM_CONTROL);
104 R1 = [p0];
105 R0 = ~ENICPLB;
106 R0 = R0 & R1;
107 [p0] = R0;
108 SSYNC;
109
110 /* Turn off the dcache */
111 p0.l = LO(DMEM_CONTROL);
112 p0.h = HI(DMEM_CONTROL);
113 R1 = [p0];
114 R0 = ~ENDCPLB;
115 R0 = R0 & R1;
116 [p0] = R0;
117 SSYNC;
118
119 /* Initialize stack pointer */
120 SP.L = LO(INITIAL_STACK);
121 SP.H = HI(INITIAL_STACK);
122 FP = SP;
123 USP = SP;
124
125#ifdef CONFIG_EARLY_PRINTK
126 SP += -12;
127 call _init_early_exception_vectors;
128 SP += 12;
129#endif
130
131 /* Put The Code for PLL Programming and SDRAM Programming in L1 ISRAM */
132 call _bf53x_relocate_l1_mem;
133#ifdef CONFIG_BFIN_KERNEL_CLOCK
134 call _start_dma_code;
135#endif
136 /* Code for initializing Async memory banks */
137
138 p2.h = hi(EBIU_AMBCTL1);
139 p2.l = lo(EBIU_AMBCTL1);
140 r0.h = hi(AMBCTL1VAL);
141 r0.l = lo(AMBCTL1VAL);
142 [p2] = r0;
143 ssync;
144
145 p2.h = hi(EBIU_AMBCTL0);
146 p2.l = lo(EBIU_AMBCTL0);
147 r0.h = hi(AMBCTL0VAL);
148 r0.l = lo(AMBCTL0VAL);
149 [p2] = r0;
150 ssync;
151
152 p2.h = hi(EBIU_AMGCTL);
153 p2.l = lo(EBIU_AMGCTL);
154 r0 = AMGCTLVAL;
155 w[p2] = r0;
156 ssync;
157
158 p2.h = hi(EBIU_MBSCTL);
159 p2.l = lo(EBIU_MBSCTL);
160 r0.h = hi(CONFIG_EBIU_MBSCTLVAL);
161 r0.l = lo(CONFIG_EBIU_MBSCTLVAL);
162 [p2] = r0;
163 ssync;
164
165 p2.h = hi(EBIU_MODE);
166 p2.l = lo(EBIU_MODE);
167 r0.h = hi(CONFIG_EBIU_MODEVAL);
168 r0.l = lo(CONFIG_EBIU_MODEVAL);
169 [p2] = r0;
170 ssync;
171
172 p2.h = hi(EBIU_FCTL);
173 p2.l = lo(EBIU_FCTL);
174 r0.h = hi(CONFIG_EBIU_FCTLVAL);
175 r0.l = lo(CONFIG_EBIU_FCTLVAL);
176 [p2] = r0;
177 ssync;
178
179 /* This section keeps the processor in supervisor mode
180 * during kernel boot. Switches to user mode at end of boot.
181 * See page 3-9 of Hardware Reference manual for documentation.
182 */
183
184 /* EVT15 = _real_start */
185
186 p0.l = lo(EVT15);
187 p0.h = hi(EVT15);
188 p1.l = _real_start;
189 p1.h = _real_start;
190 [p0] = p1;
191 csync;
192
193 p0.l = lo(IMASK);
194 p0.h = hi(IMASK);
195 p1.l = IMASK_IVG15;
196 p1.h = 0x0;
197 [p0] = p1;
198 csync;
199
200 raise 15;
201 p0.l = .LWAIT_HERE;
202 p0.h = .LWAIT_HERE;
203 reti = p0;
204#if ANOMALY_05000281
205 nop;
206 nop;
207 nop;
208#endif
209 rti;
210
211.LWAIT_HERE:
212 jump .LWAIT_HERE;
213ENDPROC(__start)
214
215ENTRY(_real_start)
216 [ -- sp ] = reti;
217 p0.l = lo(WDOG_CTL);
218 p0.h = hi(WDOG_CTL);
219 r0 = 0xAD6(z);
220 w[p0] = r0; /* watchdog off for now */
221 ssync;
222
223 /* Code update for BSS size == 0
224 * Zero out the bss region.
225 */
226
227 p1.l = ___bss_start;
228 p1.h = ___bss_start;
229 p2.l = ___bss_stop;
230 p2.h = ___bss_stop;
231 r0 = 0;
232 p2 -= p1;
233 lsetup (.L_clear_bss, .L_clear_bss ) lc0 = p2;
234.L_clear_bss:
235 B[p1++] = r0;
236
237 /* In case there is a NULL pointer reference
238 * Zero out region before stext
239 */
240
241 p1.l = 0x0;
242 p1.h = 0x0;
243 r0.l = __stext;
244 r0.h = __stext;
245 r0 = r0 >> 1;
246 p2 = r0;
247 r0 = 0;
248 lsetup (.L_clear_zero, .L_clear_zero ) lc0 = p2;
249.L_clear_zero:
250 W[p1++] = r0;
251
252 /* pass the uboot arguments to the global value command line */
253 R0 = R7;
254 call _cmdline_init;
255
256 p1.l = __rambase;
257 p1.h = __rambase;
258 r0.l = __sdata;
259 r0.h = __sdata;
260 [p1] = r0;
261
262 p1.l = __ramstart;
263 p1.h = __ramstart;
264 p3.l = ___bss_stop;
265 p3.h = ___bss_stop;
266
267 r1 = p3;
268 [p1] = r1;
269
270
271 /*
272 * load the current thread pointer and stack
273 */
274 r1.l = _init_thread_union;
275 r1.h = _init_thread_union;
276
277 r2.l = 0x2000;
278 r2.h = 0x0000;
279 r1 = r1 + r2;
280 sp = r1;
281 usp = sp;
282 fp = sp;
283 call _start_kernel;
284.L_exit:
285 jump.s .L_exit;
286ENDPROC(_real_start)
287
288__FINIT
289
290.section .l1.text 38.section .l1.text
291#ifdef CONFIG_BFIN_KERNEL_CLOCK 39#ifdef CONFIG_BFIN_KERNEL_CLOCK
292ENTRY(_start_dma_code) 40ENTRY(_start_dma_code)
@@ -443,13 +191,6 @@ ENTRY(_start_dma_code)
443 SSYNC; 191 SSYNC;
444#endif 192#endif
445 193
446 p0.h = hi(SIC_IWR0);
447 p0.l = lo(SIC_IWR0);
448 r0.l = lo(IWR_ENABLE_ALL);
449 r0.h = hi(IWR_ENABLE_ALL);
450 [p0] = r0;
451 SSYNC;
452
453 RTS; 194 RTS;
454ENDPROC(_start_dma_code) 195ENDPROC(_start_dma_code)
455#endif /* CONFIG_BFIN_KERNEL_CLOCK */ 196#endif /* CONFIG_BFIN_KERNEL_CLOCK */