sc7180: Add Modem region in memlayout to avoid modem cleanup in Secboot reboot.

two different modem regions wifi and lte to be handled in QC_SEC and modem

Change-Id: Ib4592ca66d3d0db4c4768be4cd27422fe9f786b8
Signed-off-by: Ravi Kumar Bokka <rbokka@codeaurora.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/46661
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>

1 files changed, 28 insertions, 0 deletions

diff --git a/src/soc/qualcomm/sc7180/carve_out.c b/src/soc/qualcomm/sc7180/carve_out.c
new file mode 100644
index 0000000000..960b923bcc
--- /dev/null
+++ b/src/soc/qualcomm/sc7180/carve_out.c
@@ -0,0 +1,28 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#include <arch/stages.h>
+#include <soc/mmu_common.h>
+#include <soc/symbols.h>
+#include <device/mmio.h>
+#include <string.h>
+
+#define MODEM_ID_LTE 0x004c5445
+#define MODEM_ID_WIFI 0x57494649
+
+bool soc_modem_carve_out(void **start, void **end)
+{
+	uint32_t modem_id = read32(_modem_id);
+
+	switch (modem_id) {
+	case MODEM_ID_LTE:
+		*start = _dram_modem_wifi_only;
+		*end = _edram_modem_extra;
+		return true;
+	case MODEM_ID_WIFI:
+		*start = _dram_modem_wifi_only;
+		*end = _edram_modem_wifi_only;
+		return true;
+	default:
+		return false;
+	}
+}