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59 lines
1.3 KiB
59 lines
1.3 KiB
#include <string.h>
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#include "finisher.h"
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#include "fdt.h"
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volatile uint32_t* finisher;
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void finisher_exit(uint16_t code)
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{
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if (!finisher) return;
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if (code == 0) {
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*finisher = FINISHER_PASS;
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} else {
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*finisher = code << 16 | FINISHER_FAIL;
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}
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}
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struct finisher_scan
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{
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int compat;
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uint64_t reg;
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};
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static void finisher_open(const struct fdt_scan_node *node, void *extra)
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{
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struct finisher_scan *scan = (struct finisher_scan *)extra;
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memset(scan, 0, sizeof(*scan));
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}
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static void finisher_prop(const struct fdt_scan_prop *prop, void *extra)
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{
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struct finisher_scan *scan = (struct finisher_scan *)extra;
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if (!strcmp(prop->name, "compatible") && !strcmp((const char*)prop->value, "sifive,test0")) {
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scan->compat = 1;
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} else if (!strcmp(prop->name, "reg")) {
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fdt_get_address(prop->node->parent, prop->value, &scan->reg);
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}
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}
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static void finisher_done(const struct fdt_scan_node *node, void *extra)
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{
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struct finisher_scan *scan = (struct finisher_scan *)extra;
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if (!scan->compat || !scan->reg || finisher) return;
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finisher = (uint32_t*)(uintptr_t)scan->reg;
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}
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void query_finisher(uintptr_t fdt)
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{
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struct fdt_cb cb;
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struct finisher_scan scan;
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memset(&cb, 0, sizeof(cb));
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cb.open = finisher_open;
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cb.prop = finisher_prop;
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cb.done = finisher_done;
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cb.extra = &scan;
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fdt_scan(fdt, &cb);
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}
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