misc fixes

+ Align kernel to 2MiB boundary in u-boot

+ Optimize alignment functions a little bit, should still have to check
  on real hardware but 'feels' more clean

+ Add early boot debugging

+ Put extra cores we aren't ready to account for to sleep if/when they
  boot.

+ Make BASE_PAGE_SIZE constant on riscv64/32, helps the compiler with
  some alignment checks among other things.

1 files changed, 6 insertions, 1 deletions

diff --git a/arch/riscv64/kernel/arch.c b/arch/riscv64/kernel/arch.c
index ec4cf43..4561d8b 100644
--- a/arch/riscv64/kernel/arch.c
+++ b/arch/riscv64/kernel/arch.c
@@ -8,6 +8,8 @@
 
 #include <kmi/assert.h>
 #include <kmi/debug.h>
+#include <kmi/power.h>
+#include <kmi/bkl.h>
 #include "csr.h"
 #include "arch.h"
 
@@ -19,8 +21,11 @@ id_t hartid_to_cpuid(id_t hart)
 		if (cpuid_to_hartid(i) == hart)
 			return i;
 
+	/* put extra cores to sleep so they don't do anything bad */
 	error("failed to match hart id %ld to cpu id\n", (long)hart);
-	/* default to zero, though this should maybe be a panic? */
+	bkl_unlock();
+	sleep();
+	/* should never really be reached but eh */
 	return 0;
 }