mirror of
https://github.com/torvalds/linux
synced 2024-09-28 15:31:19 +00:00
035e111f9a
The two chips are somewhat different, and needs different handling. Adds handing of the dma, dram initialization, hardware settings, io, memory arbiter and pinmux Also moves the dma, dram initialization and io from CRIS v32 common files.
104 lines
1.6 KiB
C
104 lines
1.6 KiB
C
/*
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* Simulator hook mechanism
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*/
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#include "vcs_hook.h"
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#include <asm/io.h>
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#include <stdarg.h>
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#define HOOK_TRIG_ADDR 0xb7000000
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#define HOOK_MEM_BASE_ADDR 0xce000000
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static volatile unsigned *hook_base;
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#define HOOK_DATA(offset) hook_base[offset]
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#define VHOOK_DATA(offset) hook_base[offset]
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#define HOOK_TRIG(funcid) \
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do { \
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*((unsigned *) HOOK_TRIG_ADDR) = funcid; \
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} while (0)
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#define HOOK_DATA_BYTE(offset) ((unsigned char *)hook_base)[offset]
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static void hook_init(void)
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{
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static int first = 1;
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if (first) {
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first = 0;
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hook_base = ioremap(HOOK_MEM_BASE_ADDR, 8192);
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}
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}
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static unsigned hook_trig(unsigned id)
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{
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unsigned ret;
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/* preempt_disable(); */
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/* Dummy read from mem to make sure data has propagated to memory
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* before trigging */
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ret = *hook_base;
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/* trigger hook */
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HOOK_TRIG(id);
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/* wait for call to finish */
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while (VHOOK_DATA(0) > 0) ;
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/* extract return value */
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ret = VHOOK_DATA(1);
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return ret;
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}
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int hook_call(unsigned id, unsigned pcnt, ...)
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{
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va_list ap;
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int i;
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unsigned ret;
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hook_init();
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HOOK_DATA(0) = id;
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va_start(ap, pcnt);
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for (i = 1; i <= pcnt; i++)
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HOOK_DATA(i) = va_arg(ap, unsigned);
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va_end(ap);
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ret = hook_trig(id);
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return ret;
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}
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int hook_call_str(unsigned id, unsigned size, const char *str)
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{
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int i;
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unsigned ret;
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hook_init();
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HOOK_DATA(0) = id;
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HOOK_DATA(1) = size;
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for (i = 0; i < size; i++)
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HOOK_DATA_BYTE(8 + i) = str[i];
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HOOK_DATA_BYTE(8 + i) = 0;
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ret = hook_trig(id);
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return ret;
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}
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void print_str(const char *str)
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{
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int i;
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/* find null at end of string */
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for (i = 1; str[i]; i++) ;
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hook_call(hook_print_str, i, str);
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}
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void CPU_WATCHDOG_TIMEOUT(unsigned t)
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{
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}
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