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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/cp0.h> |
36 | #include <arch/cp0.h> |
37 | #include <arch/exception.h> |
37 | #include <arch/exception.h> |
38 | #include <mm/as.h> |
38 | #include <mm/as.h> |
39 | 39 | ||
40 | #include <userspace.h> |
40 | #include <userspace.h> |
41 | #include <arch/console.h> |
41 | #include <arch/console.h> |
42 | #include <memstr.h> |
42 | #include <memstr.h> |
43 | #include <proc/thread.h> |
43 | #include <proc/thread.h> |
44 | #include <proc/uarg.h> |
44 | #include <proc/uarg.h> |
45 | #include <print.h> |
45 | #include <print.h> |
46 | #include <syscall/syscall.h> |
46 | #include <syscall/syscall.h> |
47 | #include <sysinfo/sysinfo.h> |
47 | #include <sysinfo/sysinfo.h> |
48 | 48 | ||
49 | #include <arch/interrupt.h> |
49 | #include <arch/interrupt.h> |
50 | #include <console/chardev.h> |
50 | #include <console/chardev.h> |
51 | #include <arch/barrier.h> |
51 | #include <arch/barrier.h> |
52 | #include <arch/debugger.h> |
52 | #include <arch/debugger.h> |
53 | #include <genarch/fb/fb.h> |
53 | #include <genarch/fb/fb.h> |
54 | #include <genarch/fb/visuals.h> |
54 | #include <genarch/fb/visuals.h> |
- | 55 | #include <genarch/drivers/dsrln/dsrlnin.h> |
|
- | 56 | #include <genarch/drivers/dsrln/dsrlnout.h> |
|
- | 57 | #include <genarch/srln/srln.h> |
|
55 | #include <macros.h> |
58 | #include <macros.h> |
56 | #include <ddi/device.h> |
59 | #include <ddi/device.h> |
57 | #include <config.h> |
60 | #include <config.h> |
58 | #include <string.h> |
61 | #include <string.h> |
59 | #include <arch/drivers/msim.h> |
62 | #include <arch/drivers/msim.h> |
60 | 63 | ||
61 | #include <arch/asm/regname.h> |
64 | #include <arch/asm/regname.h> |
62 | 65 | ||
63 | /* Size of the code jumping to the exception handler code |
66 | /* Size of the code jumping to the exception handler code |
64 | * - J+NOP |
67 | * - J+NOP |
65 | */ |
68 | */ |
66 | #define EXCEPTION_JUMP_SIZE 8 |
69 | #define EXCEPTION_JUMP_SIZE 8 |
67 | 70 | ||
68 | #define TLB_EXC ((char *) 0x80000000) |
71 | #define TLB_EXC ((char *) 0x80000000) |
69 | #define NORM_EXC ((char *) 0x80000180) |
72 | #define NORM_EXC ((char *) 0x80000180) |
70 | #define CACHE_EXC ((char *) 0x80000100) |
73 | #define CACHE_EXC ((char *) 0x80000100) |
71 | 74 | ||
72 | 75 | ||
73 | /* Why the linker moves the variable 64K away in assembler |
76 | /* Why the linker moves the variable 64K away in assembler |
74 | * when not in .text section? |
77 | * when not in .text section? |
75 | */ |
78 | */ |
76 | 79 | ||
77 | /* Stack pointer saved when entering user mode */ |
80 | /* Stack pointer saved when entering user mode */ |
78 | uintptr_t supervisor_sp __attribute__ ((section (".text"))); |
81 | uintptr_t supervisor_sp __attribute__ ((section (".text"))); |
79 | 82 | ||
80 | count_t cpu_count = 0; |
83 | count_t cpu_count = 0; |
81 | 84 | ||
82 | /** Performs mips32-specific initialization before main_bsp() is called. */ |
85 | /** Performs mips32-specific initialization before main_bsp() is called. */ |
83 | void arch_pre_main(void *entry __attribute__((unused)), bootinfo_t *bootinfo) |
86 | void arch_pre_main(void *entry __attribute__((unused)), bootinfo_t *bootinfo) |
84 | { |
87 | { |
85 | /* Setup usermode */ |
88 | /* Setup usermode */ |
86 | init.cnt = bootinfo->cnt; |
89 | init.cnt = bootinfo->cnt; |
87 | 90 | ||
88 | count_t i; |
91 | count_t i; |
89 | for (i = 0; i < min3(bootinfo->cnt, TASKMAP_MAX_RECORDS, CONFIG_INIT_TASKS); i++) { |
92 | for (i = 0; i < min3(bootinfo->cnt, TASKMAP_MAX_RECORDS, CONFIG_INIT_TASKS); i++) { |
90 | init.tasks[i].addr = bootinfo->tasks[i].addr; |
93 | init.tasks[i].addr = bootinfo->tasks[i].addr; |
91 | init.tasks[i].size = bootinfo->tasks[i].size; |
94 | init.tasks[i].size = bootinfo->tasks[i].size; |
92 | strncpy(init.tasks[i].name, bootinfo->tasks[i].name, |
95 | strncpy(init.tasks[i].name, bootinfo->tasks[i].name, |
93 | CONFIG_TASK_NAME_BUFLEN); |
96 | CONFIG_TASK_NAME_BUFLEN); |
94 | } |
97 | } |
95 | 98 | ||
96 | for (i = 0; i < CPUMAP_MAX_RECORDS; i++) { |
99 | for (i = 0; i < CPUMAP_MAX_RECORDS; i++) { |
97 | if ((bootinfo->cpumap & (1 << i)) != 0) |
100 | if ((bootinfo->cpumap & (1 << i)) != 0) |
98 | cpu_count++; |
101 | cpu_count++; |
99 | } |
102 | } |
100 | } |
103 | } |
101 | 104 | ||
102 | void arch_pre_mm_init(void) |
105 | void arch_pre_mm_init(void) |
103 | { |
106 | { |
104 | /* It is not assumed by default */ |
107 | /* It is not assumed by default */ |
105 | interrupts_disable(); |
108 | interrupts_disable(); |
106 | 109 | ||
107 | /* Initialize dispatch table */ |
110 | /* Initialize dispatch table */ |
108 | exception_init(); |
111 | exception_init(); |
109 | 112 | ||
110 | /* Copy the exception vectors to the right places */ |
113 | /* Copy the exception vectors to the right places */ |
111 | memcpy(TLB_EXC, (char *) tlb_refill_entry, EXCEPTION_JUMP_SIZE); |
114 | memcpy(TLB_EXC, (char *) tlb_refill_entry, EXCEPTION_JUMP_SIZE); |
112 | smc_coherence_block(TLB_EXC, EXCEPTION_JUMP_SIZE); |
115 | smc_coherence_block(TLB_EXC, EXCEPTION_JUMP_SIZE); |
113 | memcpy(NORM_EXC, (char *) exception_entry, EXCEPTION_JUMP_SIZE); |
116 | memcpy(NORM_EXC, (char *) exception_entry, EXCEPTION_JUMP_SIZE); |
114 | smc_coherence_block(NORM_EXC, EXCEPTION_JUMP_SIZE); |
117 | smc_coherence_block(NORM_EXC, EXCEPTION_JUMP_SIZE); |
115 | memcpy(CACHE_EXC, (char *) cache_error_entry, EXCEPTION_JUMP_SIZE); |
118 | memcpy(CACHE_EXC, (char *) cache_error_entry, EXCEPTION_JUMP_SIZE); |
116 | smc_coherence_block(CACHE_EXC, EXCEPTION_JUMP_SIZE); |
119 | smc_coherence_block(CACHE_EXC, EXCEPTION_JUMP_SIZE); |
117 | 120 | ||
118 | /* |
121 | /* |
119 | * Switch to BEV normal level so that exception vectors point to the |
122 | * Switch to BEV normal level so that exception vectors point to the |
120 | * kernel. Clear the error level. |
123 | * kernel. Clear the error level. |
121 | */ |
124 | */ |
122 | cp0_status_write(cp0_status_read() & |
125 | cp0_status_write(cp0_status_read() & |
123 | ~(cp0_status_bev_bootstrap_bit | cp0_status_erl_error_bit)); |
126 | ~(cp0_status_bev_bootstrap_bit | cp0_status_erl_error_bit)); |
124 | 127 | ||
125 | /* |
128 | /* |
126 | * Mask all interrupts |
129 | * Mask all interrupts |
127 | */ |
130 | */ |
128 | cp0_mask_all_int(); |
131 | cp0_mask_all_int(); |
129 | 132 | ||
130 | debugger_init(); |
133 | debugger_init(); |
131 | } |
134 | } |
132 | 135 | ||
133 | void arch_post_mm_init(void) |
136 | void arch_post_mm_init(void) |
134 | { |
137 | { |
135 | interrupt_init(); |
138 | interrupt_init(); |
136 | msim_console(device_assign_devno()); |
- | |
- | 139 | ||
137 | #ifdef CONFIG_FB |
140 | #ifdef CONFIG_FB |
138 | /* GXemul framebuffer */ |
141 | /* GXemul framebuffer */ |
139 | fb_properties_t gxemul_prop = { |
142 | fb_properties_t gxemul_prop = { |
140 | .addr = 0x12000000, |
143 | .addr = 0x12000000, |
141 | .offset = 0, |
144 | .offset = 0, |
142 | .x = 640, |
145 | .x = 640, |
143 | .y = 480, |
146 | .y = 480, |
144 | .scan = 1920, |
147 | .scan = 1920, |
145 | .visual = VISUAL_BGR_8_8_8, |
148 | .visual = VISUAL_BGR_8_8_8, |
146 | }; |
149 | }; |
147 | fb_init(&gxemul_prop); |
150 | fb_init(&gxemul_prop); |
148 | #endif |
151 | #else |
149 | - | ||
150 | #ifdef MACHINE_msim |
- | |
151 | sysinfo_set_item_val("machine.msim", NULL, 1); |
- | |
152 | #endif |
- | |
153 | - | ||
154 | #ifdef MACHINE_simics |
152 | #ifdef CONFIG_MIPS_PRN |
155 | sysinfo_set_item_val("machine.simics", NULL, 1); |
153 | dsrlnout_init((ioport8_t *) MSIM_KBD_ADDRESS); |
156 | #endif |
- | |
157 | - | ||
158 | #ifdef MACHINE_bgxemul |
154 | #endif /* CONFIG_MIPS_PRN */ |
159 | sysinfo_set_item_val("machine.bgxemul", NULL, 1); |
- | |
160 | #endif |
- | |
161 | - | ||
162 | #ifdef MACHINE_lgxemul |
155 | #endif /* CONFIG_FB */ |
163 | sysinfo_set_item_val("machine.lgxemul", NULL, 1); |
- | |
164 | #endif |
- | |
165 | } |
156 | } |
166 | 157 | ||
167 | void arch_post_cpu_init(void) |
158 | void arch_post_cpu_init(void) |
168 | { |
159 | { |
169 | } |
160 | } |
170 | 161 | ||
171 | void arch_pre_smp_init(void) |
162 | void arch_pre_smp_init(void) |
172 | { |
163 | { |
173 | } |
164 | } |
174 | 165 | ||
175 | void arch_post_smp_init(void) |
166 | void arch_post_smp_init(void) |
176 | { |
167 | { |
- | 168 | #ifdef CONFIG_MIPS_KBD |
|
- | 169 | devno_t devno = device_assign_devno(); |
|
- | 170 | ||
- | 171 | /* |
|
- | 172 | * Initialize the msim/GXemul keyboard port. Then initialize the serial line |
|
- | 173 | * module and connect it to the msim/GXemul keyboard. Enable keyboard interrupts. |
|
- | 174 | */ |
|
- | 175 | indev_t *kbrdin = dsrlnin_init((dsrlnin_t *) MSIM_KBD_ADDRESS, devno, MSIM_KBD_IRQ); |
|
- | 176 | if (kbrdin) { |
|
- | 177 | srln_init(kbrdin); |
|
- | 178 | cp0_unmask_int(MSIM_KBD_IRQ); |
|
- | 179 | } |
|
- | 180 | ||
- | 181 | /* |
|
- | 182 | * This is the necessary evil until the userspace driver is entirely |
|
- | 183 | * self-sufficient. |
|
- | 184 | */ |
|
- | 185 | sysinfo_set_item_val("kbd", NULL, true); |
|
- | 186 | sysinfo_set_item_val("kbd.devno", NULL, devno); |
|
- | 187 | sysinfo_set_item_val("kbd.inr", NULL, MSIM_KBD_IRQ); |
|
- | 188 | sysinfo_set_item_val("kbd.address.virtual", NULL, MSIM_KBD_ADDRESS); |
|
- | 189 | #endif |
|
177 | } |
190 | } |
178 | 191 | ||
179 | void calibrate_delay_loop(void) |
192 | void calibrate_delay_loop(void) |
180 | { |
193 | { |
181 | } |
194 | } |
182 | 195 | ||
183 | void userspace(uspace_arg_t *kernel_uarg) |
196 | void userspace(uspace_arg_t *kernel_uarg) |
184 | { |
197 | { |
185 | /* EXL = 1, UM = 1, IE = 1 */ |
198 | /* EXL = 1, UM = 1, IE = 1 */ |
186 | cp0_status_write(cp0_status_read() | (cp0_status_exl_exception_bit | |
199 | cp0_status_write(cp0_status_read() | (cp0_status_exl_exception_bit | |
187 | cp0_status_um_bit | cp0_status_ie_enabled_bit)); |
200 | cp0_status_um_bit | cp0_status_ie_enabled_bit)); |
188 | cp0_epc_write((uintptr_t) kernel_uarg->uspace_entry); |
201 | cp0_epc_write((uintptr_t) kernel_uarg->uspace_entry); |
189 | userspace_asm(((uintptr_t) kernel_uarg->uspace_stack + PAGE_SIZE), |
202 | userspace_asm(((uintptr_t) kernel_uarg->uspace_stack + PAGE_SIZE), |
190 | (uintptr_t) kernel_uarg->uspace_uarg, |
203 | (uintptr_t) kernel_uarg->uspace_uarg, |
191 | (uintptr_t) kernel_uarg->uspace_entry); |
204 | (uintptr_t) kernel_uarg->uspace_entry); |
192 | 205 | ||
193 | while (1); |
206 | while (1); |
194 | } |
207 | } |
195 | 208 | ||
196 | /** Perform mips32 specific tasks needed before the new task is run. */ |
209 | /** Perform mips32 specific tasks needed before the new task is run. */ |
197 | void before_task_runs_arch(void) |
210 | void before_task_runs_arch(void) |
198 | { |
211 | { |
199 | } |
212 | } |
200 | 213 | ||
201 | /** Perform mips32 specific tasks needed before the new thread is scheduled. */ |
214 | /** Perform mips32 specific tasks needed before the new thread is scheduled. */ |
202 | void before_thread_runs_arch(void) |
215 | void before_thread_runs_arch(void) |
203 | { |
216 | { |
204 | supervisor_sp = (uintptr_t) &THREAD->kstack[THREAD_STACK_SIZE - |
217 | supervisor_sp = (uintptr_t) &THREAD->kstack[THREAD_STACK_SIZE - |
205 | SP_DELTA]; |
218 | SP_DELTA]; |
206 | } |
219 | } |
207 | 220 | ||
208 | void after_thread_ran_arch(void) |
221 | void after_thread_ran_arch(void) |
209 | { |
222 | { |
210 | } |
223 | } |
211 | 224 | ||
212 | /** Set thread-local-storage pointer |
225 | /** Set thread-local-storage pointer |
213 | * |
226 | * |
214 | * We have it currently in K1, it is |
227 | * We have it currently in K1, it is |
215 | * possible to have it separately in the future. |
228 | * possible to have it separately in the future. |
216 | */ |
229 | */ |
217 | unative_t sys_tls_set(unative_t addr) |
230 | unative_t sys_tls_set(unative_t addr) |
218 | { |
231 | { |
219 | return 0; |
232 | return 0; |
220 | } |
233 | } |
221 | 234 | ||
222 | void arch_reboot(void) |
235 | void arch_reboot(void) |
223 | { |
236 | { |
224 | ___halt(); |
237 | ___halt(); |
225 | - | ||
226 | while (1); |
238 | while (1); |
227 | } |
239 | } |
228 | 240 | ||
229 | /** Construct function pointer |
241 | /** Construct function pointer |
230 | * |
242 | * |
231 | * @param fptr function pointer structure |
243 | * @param fptr function pointer structure |
232 | * @param addr function address |
244 | * @param addr function address |
233 | * @param caller calling function address |
245 | * @param caller calling function address |
234 | * |
246 | * |
235 | * @return address of the function pointer |
247 | * @return address of the function pointer |
236 | * |
248 | * |
237 | */ |
249 | */ |
238 | void *arch_construct_function(fncptr_t *fptr, void *addr, void *caller) |
250 | void *arch_construct_function(fncptr_t *fptr, void *addr, void *caller) |
239 | { |
251 | { |
240 | return addr; |
252 | return addr; |
241 | } |
253 | } |
242 | 254 | ||
243 | /** @} |
255 | /** @} |
244 | */ |
256 | */ |
245 | 257 |