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RISCV: modify arch_prog_run to handle payloads correctly. 

Unlike the other stages, the payload requires virtual memory to be set up
and also a privelege level change.

Change-Id: Ibbe2a55f7719d917f121a53a17c6d90e6b2ab3d1
Signed-off-by: Ronald G. Minnich <rminnich@gmail.com>
Reviewed-on: http://review.coreboot.org/11699
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Tested-by: build bot (Jenkins)
This commit is contained in:
Ronald G. Minnich 2015-09-22 15:53:32 -07:00
parent d972f78e75
commit f47f5fb4f1
1 changed files with 11 additions and 3 deletions
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14
src/arch/riscv/boot.c
View File

@ -18,11 +18,19 @@
*/
#include <program_loading.h>
#include <vm.h>
#include <arch/encoding.h>
#include <rules.h>
void arch_prog_run(struct prog *prog)
{
void (*doit)(void *);
void (*doit)(void *) = prog_entry(prog);
doit = prog_entry(prog);
doit(prog_entry_arg(prog));
if (ENV_RAMSTAGE && prog_type(prog) == ASSET_PAYLOAD) {
initVirtualMemory();
write_csr(mepc, doit);
asm volatile("eret");
} else {
doit(prog_entry_arg(prog));
}
}