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kboot: Delete CPU nodes instead of disabling them

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Signed-off-by: Hector Martin <marcan@marcan.st>
This commit is contained in:
Hector Martin 2021-11-15 22:48:28 +09:00
parent 7690fd730c
commit ecb6c82e75
1 changed files with 11 additions and 14 deletions
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25
src/kboot.c
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@ -204,14 +204,10 @@ static int dt_set_cpus(void)
bail("FDT: /cpus node not found in devtree\n");
int node, cpu = 0;
char name_shadow[32];
fdt_for_each_subnode(node, dt, cpus)
{
for (int node = fdt_first_subnode(dt, cpus); node >= 0;) {
const char *name = fdt_get_name(dt, node, NULL);
if (strncmp(name, "cpu@", 4))
continue;
strncpy(name_shadow, name, 32);
goto next_node;
const fdt64_t *prop = fdt_getprop(dt, node, "reg", NULL);
if (!prop)
@ -220,16 +216,15 @@ static int dt_set_cpus(void)
u64 dt_mpidr = fdt64_ld(prop);
if (dt_mpidr == (mrs(MPIDR_EL1) & 0xFFFFFF))
goto next;
goto next_cpu;
if (!smp_is_alive(cpu)) {
printf("FDT: CPU %d is not alive, disabling...\n", cpu);
if (fdt_setprop_string(dt, node, "status", "disabled"))
bail("FDT: couldn't set status property\n");
// The above invalidates the iterator, so fix it
cpu = fdt_subnode_offset(dt, cpus, name_shadow);
goto next;
int next = fdt_next_subnode(dt, node);
fdt_nop_node(dt, node);
cpu++;
node = next;
continue;
}
u64 mpidr = smp_get_mpidr(cpu);
@ -243,8 +238,10 @@ static int dt_set_cpus(void)
printf("FDT: CPU %d MPIDR=0x%lx release-addr=0x%lx\n", cpu, mpidr, release_addr);
next:
next_cpu:
cpu++;
next_node:
node = fdt_next_subnode(dt, node);
}
if ((node < 0) && (node != -FDT_ERR_NOTFOUND)) {