[coreboot-gerrit] Change in ...coreboot[master]: mb/emulation/qemu-i449fx: prepare fw_cfg for romstage usage

[Thomas Heijligen (Code Review)]

Thomas Heijligen has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/30846

Change subject: mb/emulation/qemu-i449fx: prepare fw_cfg for romstage usage
......................................................................

mb/emulation/qemu-i449fx: prepare fw_cfg for romstage usage

Add separate functions for selecting the port and reading the port.
Romstage can now read incremental from the data port.

Change-Id: I0ffde3bc2a4415a8af99af2275d16f6609099e37
Signed-off-by: Thomas Heijligen 
---
M src/mainboard/emulation/qemu-i440fx/fw_cfg.c
1 file changed, 11 insertions(+), 1 deletion(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/46/30846/1

diff --git a/src/mainboard/emulation/qemu-i440fx/fw_cfg.c b/src/mainboard/emulation/qemu-i440fx/fw_cfg.c
index 9b394f2..957e9d2 100644
--- a/src/mainboard/emulation/qemu-i440fx/fw_cfg.c
+++ b/src/mainboard/emulation/qemu-i440fx/fw_cfg.c
@@ -42,12 +42,22 @@
    return fw_cfg_detected;
 }

-void fw_cfg_get(int entry, void *dst, int dstlen)
+static void fw_cfg_select(int entry)
 {
    outw(entry, FW_CFG_PORT_CTL);
+}
+
+static void fw_cfg_read(void *dst, int dstlen)
+{
    insb(FW_CFG_PORT_DATA, dst, dstlen);
 }

+void fw_cfg_get(int entry, void *dst, int dstlen)
+{
+	fw_cfg_select(entry);
+	fw_cfg_read(dst, dstlen);
+}
+
 static void fw_cfg_init_file(void)
 {
    u32 i, size, count = 0;