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