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1 | /* |
1 | /* |
2 | * Copyright (c) 2003-2004 Jakub Jermar |
2 | * Copyright (c) 2003-2004 Jakub Jermar |
3 | * All rights reserved. |
3 | * All rights reserved. |
4 | * |
4 | * |
5 | * Redistribution and use in source and binary forms, with or without |
5 | * Redistribution and use in source and binary forms, with or without |
6 | * modification, are permitted provided that the following conditions |
6 | * modification, are permitted provided that the following conditions |
7 | * are met: |
7 | * are met: |
8 | * |
8 | * |
9 | * - Redistributions of source code must retain the above copyright |
9 | * - Redistributions of source code must retain the above copyright |
10 | * notice, this list of conditions and the following disclaimer. |
10 | * notice, this list of conditions and the following disclaimer. |
11 | * - Redistributions in binary form must reproduce the above copyright |
11 | * - Redistributions in binary form must reproduce the above copyright |
12 | * notice, this list of conditions and the following disclaimer in the |
12 | * notice, this list of conditions and the following disclaimer in the |
13 | * documentation and/or other materials provided with the distribution. |
13 | * documentation and/or other materials provided with the distribution. |
14 | * - The name of the author may not be used to endorse or promote products |
14 | * - The name of the author may not be used to endorse or promote products |
15 | * derived from this software without specific prior written permission. |
15 | * derived from this software without specific prior written permission. |
16 | * |
16 | * |
17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
27 | */ |
27 | */ |
28 | 28 | ||
29 | /** @addtogroup mips32 |
29 | /** @addtogroup mips32 |
30 | * @{ |
30 | * @{ |
31 | */ |
31 | */ |
32 | /** @file |
32 | /** @file |
33 | */ |
33 | */ |
34 | 34 | ||
35 | #include <arch.h> |
35 | #include <arch.h> |
36 | #include <arch/boot.h> |
- | |
37 | #include <arch/cp0.h> |
36 | #include <arch/cp0.h> |
38 | #include <arch/exception.h> |
37 | #include <arch/exception.h> |
39 | #include <mm/as.h> |
38 | #include <mm/as.h> |
40 | 39 | ||
41 | #include <userspace.h> |
40 | #include <userspace.h> |
42 | #include <arch/console.h> |
41 | #include <arch/console.h> |
43 | #include <memstr.h> |
42 | #include <memstr.h> |
44 | #include <proc/thread.h> |
43 | #include <proc/thread.h> |
45 | #include <proc/uarg.h> |
44 | #include <proc/uarg.h> |
46 | #include <print.h> |
45 | #include <print.h> |
47 | #include <syscall/syscall.h> |
46 | #include <syscall/syscall.h> |
48 | #include <sysinfo/sysinfo.h> |
47 | #include <sysinfo/sysinfo.h> |
49 | 48 | ||
50 | #include <arch/interrupt.h> |
49 | #include <arch/interrupt.h> |
51 | #include <console/chardev.h> |
50 | #include <console/chardev.h> |
52 | #include <arch/barrier.h> |
51 | #include <arch/barrier.h> |
53 | #include <arch/debugger.h> |
52 | #include <arch/debugger.h> |
54 | #include <genarch/fb/fb.h> |
53 | #include <genarch/fb/fb.h> |
55 | #include <genarch/fb/visuals.h> |
54 | #include <genarch/fb/visuals.h> |
56 | #include <macros.h> |
55 | #include <macros.h> |
57 | #include <ddi/device.h> |
56 | #include <ddi/device.h> |
58 | 57 | ||
59 | #include <arch/asm/regname.h> |
58 | #include <arch/asm/regname.h> |
60 | 59 | ||
61 | /* Size of the code jumping to the exception handler code |
60 | /* Size of the code jumping to the exception handler code |
62 | * - J+NOP |
61 | * - J+NOP |
63 | */ |
62 | */ |
64 | #define EXCEPTION_JUMP_SIZE 8 |
63 | #define EXCEPTION_JUMP_SIZE 8 |
65 | 64 | ||
66 | #define TLB_EXC ((char *) 0x80000000) |
65 | #define TLB_EXC ((char *) 0x80000000) |
67 | #define NORM_EXC ((char *) 0x80000180) |
66 | #define NORM_EXC ((char *) 0x80000180) |
68 | #define CACHE_EXC ((char *) 0x80000100) |
67 | #define CACHE_EXC ((char *) 0x80000100) |
69 | 68 | ||
70 | 69 | ||
71 | /* Why the linker moves the variable 64K away in assembler |
70 | /* Why the linker moves the variable 64K away in assembler |
72 | * when not in .text section ???????? |
71 | * when not in .text section? |
73 | */ |
72 | */ |
74 | uintptr_t supervisor_sp __attribute__ ((section (".text"))); |
- | |
- | 73 | ||
75 | /* Stack pointer saved when entering user mode */ |
74 | /* Stack pointer saved when entering user mode */ |
76 | /* TODO: How do we do it on SMP system???? */ |
- | |
77 | bootinfo_t bootinfo __attribute__ ((section (".text"))); |
75 | uintptr_t supervisor_sp __attribute__ ((section (".text"))); |
78 | 76 | ||
79 | void arch_pre_main(void) |
77 | count_t cpu_count = 0; |
- | 78 | ||
- | 79 | void arch_pre_main(void *entry __attribute__((unused)), bootinfo_t *bootinfo) |
|
80 | { |
80 | { |
81 | /* Setup usermode */ |
81 | /* Setup usermode */ |
82 | init.cnt = bootinfo.cnt; |
82 | init.cnt = bootinfo->cnt; |
83 | 83 | ||
84 | uint32_t i; |
84 | count_t i; |
- | 85 | for (i = 0; i < min3(bootinfo->cnt, TASKMAP_MAX_RECORDS, CONFIG_INIT_TASKS); i++) { |
|
- | 86 | init.tasks[i].addr = bootinfo->tasks[i].addr; |
|
- | 87 | init.tasks[i].size = bootinfo->tasks[i].size; |
|
- | 88 | } |
|
85 | 89 | ||
86 | for (i = 0; i < bootinfo.cnt; i++) { |
90 | for (i = 0; i < CPUMAP_MAX_RECORDS; i++) { |
87 | init.tasks[i].addr = bootinfo.tasks[i].addr; |
91 | if ((bootinfo->cpumap & (1 << i)) != 0) |
88 | init.tasks[i].size = bootinfo.tasks[i].size; |
92 | cpu_count++; |
89 | } |
93 | } |
90 | } |
94 | } |
91 | 95 | ||
92 | void arch_pre_mm_init(void) |
96 | void arch_pre_mm_init(void) |
93 | { |
97 | { |
94 | /* It is not assumed by default */ |
98 | /* It is not assumed by default */ |
95 | interrupts_disable(); |
99 | interrupts_disable(); |
96 | 100 | ||
97 | /* Initialize dispatch table */ |
101 | /* Initialize dispatch table */ |
98 | exception_init(); |
102 | exception_init(); |
99 | 103 | ||
100 | /* Copy the exception vectors to the right places */ |
104 | /* Copy the exception vectors to the right places */ |
101 | memcpy(TLB_EXC, (char *) tlb_refill_entry, EXCEPTION_JUMP_SIZE); |
105 | memcpy(TLB_EXC, (char *) tlb_refill_entry, EXCEPTION_JUMP_SIZE); |
102 | smc_coherence_block(TLB_EXC, EXCEPTION_JUMP_SIZE); |
106 | smc_coherence_block(TLB_EXC, EXCEPTION_JUMP_SIZE); |
103 | memcpy(NORM_EXC, (char *) exception_entry, EXCEPTION_JUMP_SIZE); |
107 | memcpy(NORM_EXC, (char *) exception_entry, EXCEPTION_JUMP_SIZE); |
104 | smc_coherence_block(NORM_EXC, EXCEPTION_JUMP_SIZE); |
108 | smc_coherence_block(NORM_EXC, EXCEPTION_JUMP_SIZE); |
105 | memcpy(CACHE_EXC, (char *) cache_error_entry, EXCEPTION_JUMP_SIZE); |
109 | memcpy(CACHE_EXC, (char *) cache_error_entry, EXCEPTION_JUMP_SIZE); |
106 | smc_coherence_block(CACHE_EXC, EXCEPTION_JUMP_SIZE); |
110 | smc_coherence_block(CACHE_EXC, EXCEPTION_JUMP_SIZE); |
107 | 111 | ||
108 | /* |
112 | /* |
109 | * Switch to BEV normal level so that exception vectors point to the |
113 | * Switch to BEV normal level so that exception vectors point to the |
110 | * kernel. Clear the error level. |
114 | * kernel. Clear the error level. |
111 | */ |
115 | */ |
112 | cp0_status_write(cp0_status_read() & |
116 | cp0_status_write(cp0_status_read() & |
113 | ~(cp0_status_bev_bootstrap_bit | cp0_status_erl_error_bit)); |
117 | ~(cp0_status_bev_bootstrap_bit | cp0_status_erl_error_bit)); |
114 | 118 | ||
115 | /* |
119 | /* |
116 | * Mask all interrupts |
120 | * Mask all interrupts |
117 | */ |
121 | */ |
118 | cp0_mask_all_int(); |
122 | cp0_mask_all_int(); |
119 | 123 | ||
120 | debugger_init(); |
124 | debugger_init(); |
121 | } |
125 | } |
122 | 126 | ||
123 | void arch_post_mm_init(void) |
127 | void arch_post_mm_init(void) |
124 | { |
128 | { |
125 | interrupt_init(); |
129 | interrupt_init(); |
126 | console_init(device_assign_devno()); |
130 | console_init(device_assign_devno()); |
127 | #ifdef CONFIG_FB |
131 | #ifdef CONFIG_FB |
128 | /* GXemul framebuffer */ |
132 | /* GXemul framebuffer */ |
129 | fb_properties_t gxemul_prop = { |
133 | fb_properties_t gxemul_prop = { |
130 | .addr = 0x12000000, |
134 | .addr = 0x12000000, |
131 | .offset = 0, |
135 | .offset = 0, |
132 | .x = 640, |
136 | .x = 640, |
133 | .y = 480, |
137 | .y = 480, |
134 | .scan = 1920, |
138 | .scan = 1920, |
135 | .visual = VISUAL_BGR_8_8_8, |
139 | .visual = VISUAL_BGR_8_8_8, |
136 | }; |
140 | }; |
137 | fb_init(&gxemul_prop); |
141 | fb_init(&gxemul_prop); |
138 | #endif |
142 | #endif |
139 | 143 | ||
140 | #ifdef MACHINE_msim |
144 | #ifdef MACHINE_msim |
141 | sysinfo_set_item_val("machine.msim", NULL, 1); |
145 | sysinfo_set_item_val("machine.msim", NULL, 1); |
142 | #endif |
146 | #endif |
143 | 147 | ||
144 | #ifdef MACHINE_simics |
148 | #ifdef MACHINE_simics |
145 | sysinfo_set_item_val("machine.simics", NULL, 1); |
149 | sysinfo_set_item_val("machine.simics", NULL, 1); |
146 | #endif |
150 | #endif |
147 | 151 | ||
148 | #ifdef MACHINE_bgxemul |
152 | #ifdef MACHINE_bgxemul |
149 | sysinfo_set_item_val("machine.bgxemul", NULL, 1); |
153 | sysinfo_set_item_val("machine.bgxemul", NULL, 1); |
150 | #endif |
154 | #endif |
151 | 155 | ||
152 | #ifdef MACHINE_lgxemul |
156 | #ifdef MACHINE_lgxemul |
153 | sysinfo_set_item_val("machine.lgxemul", NULL, 1); |
157 | sysinfo_set_item_val("machine.lgxemul", NULL, 1); |
154 | #endif |
158 | #endif |
155 | } |
159 | } |
156 | 160 | ||
157 | void arch_post_cpu_init(void) |
161 | void arch_post_cpu_init(void) |
158 | { |
162 | { |
159 | } |
163 | } |
160 | 164 | ||
161 | void arch_pre_smp_init(void) |
165 | void arch_pre_smp_init(void) |
162 | { |
166 | { |
163 | } |
167 | } |
164 | 168 | ||
165 | void arch_post_smp_init(void) |
169 | void arch_post_smp_init(void) |
166 | { |
170 | { |
167 | } |
171 | } |
168 | 172 | ||
169 | void calibrate_delay_loop(void) |
173 | void calibrate_delay_loop(void) |
170 | { |
174 | { |
171 | } |
175 | } |
172 | 176 | ||
173 | void userspace(uspace_arg_t *kernel_uarg) |
177 | void userspace(uspace_arg_t *kernel_uarg) |
174 | { |
178 | { |
175 | /* EXL = 1, UM = 1, IE = 1 */ |
179 | /* EXL = 1, UM = 1, IE = 1 */ |
176 | cp0_status_write(cp0_status_read() | (cp0_status_exl_exception_bit | |
180 | cp0_status_write(cp0_status_read() | (cp0_status_exl_exception_bit | |
177 | cp0_status_um_bit | cp0_status_ie_enabled_bit)); |
181 | cp0_status_um_bit | cp0_status_ie_enabled_bit)); |
178 | cp0_epc_write((uintptr_t) kernel_uarg->uspace_entry); |
182 | cp0_epc_write((uintptr_t) kernel_uarg->uspace_entry); |
179 | userspace_asm(((uintptr_t) kernel_uarg->uspace_stack + PAGE_SIZE), |
183 | userspace_asm(((uintptr_t) kernel_uarg->uspace_stack + PAGE_SIZE), |
180 | (uintptr_t) kernel_uarg->uspace_uarg, |
184 | (uintptr_t) kernel_uarg->uspace_uarg, |
181 | (uintptr_t) kernel_uarg->uspace_entry); |
185 | (uintptr_t) kernel_uarg->uspace_entry); |
182 | 186 | ||
183 | while (1); |
187 | while (1); |
184 | } |
188 | } |
185 | 189 | ||
186 | /** Perform mips32 specific tasks needed before the new task is run. */ |
190 | /** Perform mips32 specific tasks needed before the new task is run. */ |
187 | void before_task_runs_arch(void) |
191 | void before_task_runs_arch(void) |
188 | { |
192 | { |
189 | } |
193 | } |
190 | 194 | ||
191 | /** Perform mips32 specific tasks needed before the new thread is scheduled. */ |
195 | /** Perform mips32 specific tasks needed before the new thread is scheduled. */ |
192 | void before_thread_runs_arch(void) |
196 | void before_thread_runs_arch(void) |
193 | { |
197 | { |
194 | supervisor_sp = (uintptr_t) &THREAD->kstack[THREAD_STACK_SIZE - |
198 | supervisor_sp = (uintptr_t) &THREAD->kstack[THREAD_STACK_SIZE - |
195 | SP_DELTA]; |
199 | SP_DELTA]; |
196 | } |
200 | } |
197 | 201 | ||
198 | void after_thread_ran_arch(void) |
202 | void after_thread_ran_arch(void) |
199 | { |
203 | { |
200 | } |
204 | } |
201 | 205 | ||
202 | /** Set thread-local-storage pointer |
206 | /** Set thread-local-storage pointer |
203 | * |
207 | * |
204 | * We have it currently in K1, it is |
208 | * We have it currently in K1, it is |
205 | * possible to have it separately in the future. |
209 | * possible to have it separately in the future. |
206 | */ |
210 | */ |
207 | unative_t sys_tls_set(unative_t addr) |
211 | unative_t sys_tls_set(unative_t addr) |
208 | { |
212 | { |
209 | return 0; |
213 | return 0; |
210 | } |
214 | } |
211 | 215 | ||
212 | void arch_reboot(void) |
216 | void arch_reboot(void) |
213 | { |
217 | { |
214 | ___halt(); |
218 | ___halt(); |
215 | 219 | ||
216 | while (1); |
220 | while (1); |
217 | } |
221 | } |
218 | 222 | ||
219 | /** Construct function pointer |
223 | /** Construct function pointer |
220 | * |
224 | * |
221 | * @param fptr function pointer structure |
225 | * @param fptr function pointer structure |
222 | * @param addr function address |
226 | * @param addr function address |
223 | * @param caller calling function address |
227 | * @param caller calling function address |
224 | * |
228 | * |
225 | * @return address of the function pointer |
229 | * @return address of the function pointer |
226 | * |
230 | * |
227 | */ |
231 | */ |
228 | void *arch_construct_function(fncptr_t *fptr, void *addr, void *caller) |
232 | void *arch_construct_function(fncptr_t *fptr, void *addr, void *caller) |
229 | { |
233 | { |
230 | return addr; |
234 | return addr; |
231 | } |
235 | } |
232 | 236 | ||
233 | /** @} |
237 | /** @} |
234 | */ |
238 | */ |
235 | 239 |