diff options
Diffstat (limited to 'arch/blackfin/mach-common/head.S')
-rw-r--r-- | arch/blackfin/mach-common/head.S | 84 |
1 files changed, 42 insertions, 42 deletions
diff --git a/arch/blackfin/mach-common/head.S b/arch/blackfin/mach-common/head.S index e1e42c029e15..698d4c05947e 100644 --- a/arch/blackfin/mach-common/head.S +++ b/arch/blackfin/mach-common/head.S | |||
@@ -17,6 +17,19 @@ | |||
17 | 17 | ||
18 | __INIT | 18 | __INIT |
19 | 19 | ||
20 | ENTRY(__init_clear_bss) | ||
21 | r2 = r2 - r1; | ||
22 | cc = r2 == 0; | ||
23 | if cc jump .L_bss_done; | ||
24 | r2 >>= 2; | ||
25 | p1 = r1; | ||
26 | p2 = r2; | ||
27 | lsetup (1f, 1f) lc0 = p2; | ||
28 | 1: [p1++] = r0; | ||
29 | .L_bss_done: | ||
30 | rts; | ||
31 | ENDPROC(__init_clear_bss) | ||
32 | |||
20 | #define INITIAL_STACK (L1_SCRATCH_START + L1_SCRATCH_LENGTH - 12) | 33 | #define INITIAL_STACK (L1_SCRATCH_START + L1_SCRATCH_LENGTH - 12) |
21 | 34 | ||
22 | ENTRY(__start) | 35 | ENTRY(__start) |
@@ -144,6 +157,35 @@ ENTRY(__start) | |||
144 | call _init_early_exception_vectors; | 157 | call _init_early_exception_vectors; |
145 | #endif | 158 | #endif |
146 | 159 | ||
160 | r0 = 0 (x); | ||
161 | /* Zero out all of the fun bss regions */ | ||
162 | #if L1_DATA_A_LENGTH > 0 | ||
163 | r1.l = __sbss_l1; | ||
164 | r1.h = __sbss_l1; | ||
165 | r2.l = __ebss_l1; | ||
166 | r2.h = __ebss_l1; | ||
167 | call __init_clear_bss | ||
168 | #endif | ||
169 | #if L1_DATA_B_LENGTH > 0 | ||
170 | r1.l = __sbss_b_l1; | ||
171 | r1.h = __sbss_b_l1; | ||
172 | r2.l = __ebss_b_l1; | ||
173 | r2.h = __ebss_b_l1; | ||
174 | call __init_clear_bss | ||
175 | #endif | ||
176 | #if L2_LENGTH > 0 | ||
177 | r1.l = __sbss_l2; | ||
178 | r1.h = __sbss_l2; | ||
179 | r2.l = __ebss_l2; | ||
180 | r2.h = __ebss_l2; | ||
181 | call __init_clear_bss | ||
182 | #endif | ||
183 | r1.l = ___bss_start; | ||
184 | r1.h = ___bss_start; | ||
185 | r2.l = ___bss_stop; | ||
186 | r2.h = ___bss_stop; | ||
187 | call __init_clear_bss | ||
188 | |||
147 | /* Put The Code for PLL Programming and SDRAM Programming in L1 ISRAM */ | 189 | /* Put The Code for PLL Programming and SDRAM Programming in L1 ISRAM */ |
148 | call _bfin_relocate_l1_mem; | 190 | call _bfin_relocate_l1_mem; |
149 | #ifdef CONFIG_BFIN_KERNEL_CLOCK | 191 | #ifdef CONFIG_BFIN_KERNEL_CLOCK |
@@ -185,19 +227,6 @@ ENDPROC(__start) | |||
185 | # define WDOG_CTL WDOGA_CTL | 227 | # define WDOG_CTL WDOGA_CTL |
186 | #endif | 228 | #endif |
187 | 229 | ||
188 | ENTRY(__init_clear_bss) | ||
189 | r2 = r2 - r1; | ||
190 | cc = r2 == 0; | ||
191 | if cc jump .L_bss_done; | ||
192 | r2 >>= 2; | ||
193 | p1 = r1; | ||
194 | p2 = r2; | ||
195 | lsetup (1f, 1f) lc0 = p2; | ||
196 | 1: [p1++] = r0; | ||
197 | .L_bss_done: | ||
198 | rts; | ||
199 | ENDPROC(__init_clear_bss) | ||
200 | |||
201 | ENTRY(_real_start) | 230 | ENTRY(_real_start) |
202 | /* Enable nested interrupts */ | 231 | /* Enable nested interrupts */ |
203 | [--sp] = reti; | 232 | [--sp] = reti; |
@@ -209,35 +238,6 @@ ENTRY(_real_start) | |||
209 | w[p0] = r0; | 238 | w[p0] = r0; |
210 | ssync; | 239 | ssync; |
211 | 240 | ||
212 | r0 = 0 (x); | ||
213 | /* Zero out all of the fun bss regions */ | ||
214 | #if L1_DATA_A_LENGTH > 0 | ||
215 | r1.l = __sbss_l1; | ||
216 | r1.h = __sbss_l1; | ||
217 | r2.l = __ebss_l1; | ||
218 | r2.h = __ebss_l1; | ||
219 | call __init_clear_bss | ||
220 | #endif | ||
221 | #if L1_DATA_B_LENGTH > 0 | ||
222 | r1.l = __sbss_b_l1; | ||
223 | r1.h = __sbss_b_l1; | ||
224 | r2.l = __ebss_b_l1; | ||
225 | r2.h = __ebss_b_l1; | ||
226 | call __init_clear_bss | ||
227 | #endif | ||
228 | #if L2_LENGTH > 0 | ||
229 | r1.l = __sbss_l2; | ||
230 | r1.h = __sbss_l2; | ||
231 | r2.l = __ebss_l2; | ||
232 | r2.h = __ebss_l2; | ||
233 | call __init_clear_bss | ||
234 | #endif | ||
235 | r1.l = ___bss_start; | ||
236 | r1.h = ___bss_start; | ||
237 | r2.l = ___bss_stop; | ||
238 | r2.h = ___bss_stop; | ||
239 | call __init_clear_bss | ||
240 | |||
241 | /* Pass the u-boot arguments to the global value command line */ | 241 | /* Pass the u-boot arguments to the global value command line */ |
242 | R0 = R7; | 242 | R0 = R7; |
243 | call _cmdline_init; | 243 | call _cmdline_init; |