[Qemu-arm] [PATCH 4/5] hw/arm/boot: Clarify why arm_setup_firmware_boot() doesn't set env->boot_info

[Peter Maydell]

The code path for booting firmware doesn't set env->boot_info. At
first sight this looks odd, so add a comment saying why we don't.

Signed-off-by: Peter Maydell <address@hidden>
---
 hw/arm/boot.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/hw/arm/boot.c b/hw/arm/boot.c
index a2e724ac68a..cfcfdf421cf 100644
--- a/hw/arm/boot.c
+++ b/hw/arm/boot.c
@@ -1186,7 +1186,8 @@ static void arm_setup_firmware_boot(ARMCPU *cpu, struct 
arm_boot_info *info)
 
     /*
      * We will start from address 0 (typically a boot ROM image) in the
-     * same way as hardware.
+     * same way as hardware. Leave env->boot_info NULL, so that
+     * do_cpu_reset() knows it does not need to alter the PC on reset.
      */
 }
 
-- 
2.20.1