treewide: Add Kconfig variable MEMLAYOUT_LD_FILE

This change defines a Kconfig variable MEMLAYOUT_LD_FILE which allows
SoC/mainboard to provide a linker file for the platform. x86 already
provides a default memlayout.ld under src/arch/x86. With this new
Kconfig variable, it is possible for the SoC/mainboard code for x86 to
provide a custom linker file as well.

Makefile.inc is updated for all architectures to use this new Kconfig
variable instead of assuming memlayout.ld files under a certain
path. All non-x86 boards used memlayout.ld under mainboard
directory. However, a lot of these boards were simply including the
memlayout from SoC. So, this change also updates these mainboards and
SoCs to define the Kconfig as required.

BUG=b:155322763
TEST=Verified that abuild with --timeless option results in the same
coreboot.rom image for all boards.

Change-Id: I6a7f96643ed0519c93967ea2c3bcd881a5d6a4d6
Signed-off-by: Furquan Shaikh <furquan@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/42292
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Raul Rangel <rrangel@chromium.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

1 files changed, 32 insertions, 0 deletions

diff --git a/src/soc/samsung/exynos5250/memlayout.ld b/src/soc/samsung/exynos5250/memlayout.ld
new file mode 100644
index 0000000000..be4bb6edd7
--- /dev/null
+++ b/src/soc/samsung/exynos5250/memlayout.ld
@@ -0,0 +1,32 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#include <memlayout.h>
+
+#include <arch/header.ld>
+
+/*
+ * Note: The BootROM loads the 8K BL1 at [0x2020000:0x2022000), so the bootblock
+ * must be placed after that. After the handoff, the space can be reclaimed.
+ */
+
+SECTIONS
+{
+	SRAM_START(0x2020000)
+	/* 13K hole, includes BL1 */
+	BOOTBLOCK(0x2023400, 32K)
+	/* 19K hole */
+	ROMSTAGE(0x2030000, 128K)
+	/* 32K hole */
+	TTB(0x2058000, 16K)
+	PRERAM_CBFS_CACHE(0x205C000, 76K)
+	FMAP_CACHE(0x206F000, 2K)
+	TPM_TCPA_LOG(0x206F800, 2K)
+	VBOOT2_WORK(0x2070000, 12K)
+	STACK(0x2074000, 16K)
+	SRAM_END(0x2078000)
+
+	DRAM_START(0x40000000)
+	RAMSTAGE(0x40000000, 128K)
+	POSTRAM_CBFS_CACHE(0x41000000, 8M)
+	DMA_COHERENT(0x77300000, 1M)
+}