ARM: meson: add support for Libre Computer aml-a311d-cc

Add support for the Libre Computer aml-a311d-cc "Alta" board:
https://libre.computer/products/aml-a311d-cc/

The Alta board has a Credit Card form factor, similar to the
the prvevious "Le Potato" card, but with the Amlogic A311D SoC,
MIPI DSI and CSI connectors. PoE header and a single USB2 Type-C
connector replacing the microUSB one for power and USB 2.0.

The board has an embedded SPI NOR flash, and EFI Capsule support
is added.

The GUID is dynamically generated for the board, to get it:
=> efidebug capsule esrt
========================================
ESRT: fw_resource_count=1
ESRT: fw_resource_count_max=1
ESRT: fw_resource_version=1
[entry 0]==============================
ESRT: fw_class=17E07D9D-4D91-53F4-8780-1D91F279C1A5
ESRT: fw_type=unknown
ESRT: fw_version=0
ESRT: lowest_supported_fw_version=0
ESRT: capsule_flags=0
ESRT: last_attempt_version=0
ESRT: last_attempt_status=success
========================================

On the host (with the aml_encrypt_g12a result binary):
$ eficapsule --guid 17E07D9D-4D91-53F4-8780-1D91F279C1A5 -i 1 u-boot.bin u-boot.cap

On the board (from USB disk containing u-boot.cap at root):
=> load usb 0:1 $kernel_addr_r u-boot.cap
=> efidebug capsule update $kernel_addr_r

The binary will then be flashed on the SPI.

Link: https://lore.kernel.org/r/20240920-u-boot-topic-libre-computer-solitude-alta-v1-1-8915b108840b@linaro.org
Signed-off-by: Neil Armstrong <[email protected]>

3 files changed, 57 insertions, 0 deletions

diff --git a/board/libre-computer/aml-a311d-cc/MAINTAINERS b/board/libre-computer/aml-a311d-cc/MAINTAINERS
new file mode 100644
index 00000000000..b4b77acd23b
--- /dev/null
+++ b/board/libre-computer/aml-a311d-cc/MAINTAINERS
@@ -0,0 +1,7 @@
+LIBRE-COMPUTER AML-A311D-CC
+M:	Neil Armstrong <[email protected]>
+S:	Maintained
+L:	[email protected]
+F:	board/amlogic/aml-a311d-cc/
+F:	configs/aml-a311d-cc_defconfig
+F:	doc/board/amlogic/aml-a311d-cc.rst
diff --git a/board/libre-computer/aml-a311d-cc/Makefile b/board/libre-computer/aml-a311d-cc/Makefile
new file mode 100644
index 00000000000..461955def3a
--- /dev/null
+++ b/board/libre-computer/aml-a311d-cc/Makefile
@@ -0,0 +1,6 @@
+# SPDX-License-Identifier: GPL-2.0+
+#
+# (C) Copyright 2016 BayLibre, SAS
+# Author: Neil Armstrong <[email protected]>
+
+obj-y	:= aml-a311d-cc.o
diff --git a/board/libre-computer/aml-a311d-cc/aml-a311d-cc.c b/board/libre-computer/aml-a311d-cc/aml-a311d-cc.c
new file mode 100644
index 00000000000..e45cfd5d8a3
--- /dev/null
+++ b/board/libre-computer/aml-a311d-cc/aml-a311d-cc.c
@@ -0,0 +1,44 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2016 BayLibre, SAS
+ * Author: Neil Armstrong <[email protected]>
+ */
+
+#include <dm.h>
+#include <env.h>
+#include <init.h>
+#include <net.h>
+#include <efi_loader.h>
+#include <asm/io.h>
+#include <asm/arch/eth.h>
+
+struct efi_fw_image fw_images[] = {
+	{
+		.fw_name = u"AML_A311D_CC_BOOT",
+		.image_index = 1,
+	},
+};
+
+struct efi_capsule_update_info update_info = {
+	.dfu_string = "sf 0:0=u-boot-bin raw 0 0x10000",
+	.num_images = ARRAY_SIZE(fw_images),
+	.images = fw_images,
+};
+
+
+#if IS_ENABLED(CONFIG_SET_DFU_ALT_INFO)
+void set_dfu_alt_info(char *interface, char *devstr)
+{
+	if (strcmp(interface, "ram") == 0)
+		env_set("dfu_alt_info", "fitimage ram 0x08080000 0x4000000");
+	else if (IS_ENABLED(CONFIG_EFI_HAVE_CAPSULE_SUPPORT))
+		env_set("dfu_alt_info", update_info.dfu_string);
+}
+#endif
+
+int misc_init_r(void)
+{
+	meson_generate_serial_ethaddr();
+
+	return 0;
+}