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authorPatrick Rudolph <patrick.rudolph@9elements.com>2019-06-30 22:12:15 +0200
committerPatrick Rudolph <siro@das-labor.org>2019-07-28 11:31:42 +0000
commitbd4bcab8addf8791a9100140ae963415450b9663 (patch)
treed6a225509c8002eb2398835b099391674e147891 /src/include
parent57e257d98714acd26a771f6c569c00b0017c794d (diff)
downloadcoreboot-bd4bcab8addf8791a9100140ae963415450b9663.tar.xz
lib: Rewrite qemu-armv7 ramdetect
* Move armv7 RAM dection to a common place * Enable it for all emulated platforms * Use 32bit probe values and restore memory even on failure * Use the new logic on the following boards: ** qemu-armv7 ** qemu-riscv Tested on qemu-system-riscv: Fixes kernel panic due to wrong memory limits reported. Change-Id: I37386c6a95bfc3b7b25aeae32c6e14cff9913513 Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/33934 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Diffstat (limited to 'src/include')
-rw-r--r--src/include/ramdetect.h22
1 files changed, 22 insertions, 0 deletions
diff --git a/src/include/ramdetect.h b/src/include/ramdetect.h
new file mode 100644
index 0000000000..b63cdf14cf
--- /dev/null
+++ b/src/include/ramdetect.h
@@ -0,0 +1,22 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+/*
+ * Probe an area if it's read/writable.
+ * Primary use case is the detection of DRAM amount on emulators.
+ *
+ * @param dram_start Physical address of DRAM start
+ * @param probe_size Maximum size in MiB to probe for
+ * @return The detected DRAM size in MiB
+ */
+size_t probe_ramsize(const uintptr_t dram_start, const size_t probe_size);