[U-Boot] [PATCH v2] ARM: meson: display Amlogic SoC Information

Julien Masson
2019-03-25T10:55:29Z

The Amlogic SoCs have a registers containing the die revision
and packaging type to determine the SoC family and package marketing
name like S905X for the GXL SoC Family.

This code is taken from the Linux meson-gx-socinfo driver and adapted
to U-Boot printing.

Signed-off-by: Julien Masson <jmasson@baylibre.com>
---
Changes from v1:
-> enable CONFIG_DISPLAY_BOARDINFO for nanopi-k2, khadas-vim2 and s400

-> handle the mask like the kernel when getting the package id:
https://git.kernel.org/pub/scm/linux/kernel/git/khilman/linux-amlogic.git/commit/?h=v5.2/drivers&id=dce47aed20c7de3ee2011b7a63e67f08e9dcfb5e

-> add new soc ids:
https://git.kernel.org/pub/scm/linux/kernel/git/khilman/linux-amlogic.git/commit/?h=v5.2/drivers&id=65f80df58eb770b2b687c35142c113d1ad6fa415

-> print the board model from the device tree

-> move all the source code in dedicated new file: board-info.c

arch/arm/mach-meson/Makefile | 2 +-
arch/arm/mach-meson/board-info.c | 166 +++++++++++++++++++++++++++++++++++++++
configs/khadas-vim2_defconfig | 2 +-
configs/khadas-vim_defconfig | 2 +-
configs/libretech-cc_defconfig | 2 +-
configs/nanopi-k2_defconfig | 2 +-
configs/odroid-c2_defconfig | 2 +-
configs/p212_defconfig | 2 +-
configs/s400_defconfig | 2 +-
9 files changed, 174 insertions(+), 8 deletions(-)
create mode 100644 arch/arm/mach-meson/board-info.c

diff --git a/arch/arm/mach-meson/Makefile b/arch/arm/mach-meson/Makefile
index b716e1a..6ddfba6 100644
--- a/arch/arm/mach-meson/Makefile
+++ b/arch/arm/mach-meson/Makefile
@@ -2,6 +2,6 @@
#
# Copyright (c) 2016 Beniamino Galvani <b.galvani@gmail.com>

-obj-y += board-common.o sm.o
+obj-y += board-common.o sm.o board-info.o
obj-$(CONFIG_MESON_GX) += board-gx.o
obj-$(CONFIG_MESON_AXG) += board-axg.o
diff --git a/arch/arm/mach-meson/board-info.c b/arch/arm/mach-meson/board-info.c
new file mode 100644
index 0000000..ba248e8
--- /dev/null
+++ b/arch/arm/mach-meson/board-info.c
@@ -0,0 +1,166 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * (C) Copyright 2019 Julien Masson <jmasson@baylibre.com>
+ * (C) Copyright 2019 Neil Armstrong <narmstrong@baylibre.com>
+ */
+
+#include <common.h>
+#include <asm/io.h>
+#include <dm.h>
+#include <linux/bitfield.h>
+#include <regmap.h>
+#include <syscon.h>
+
+#define AO_SEC_SD_CFG8 0xe0
+#define AO_SEC_SOCINFO_OFFSET AO_SEC_SD_CFG8
+
+#define SOCINFO_MAJOR GENMASK(31, 24)
+#define SOCINFO_PACK GENMASK(23, 16)
+#define SOCINFO_MINOR GENMASK(15, 8)
+#define SOCINFO_MISC GENMASK(7, 0)
+
+static const struct meson_gx_soc_id {
+ const char *name;
+ unsigned int id;
+} soc_ids[] = {
+ { "GXBB", 0x1f },
+ { "GXTVBB", 0x20 },
+ { "GXL", 0x21 },
+ { "GXM", 0x22 },
+ { "TXL", 0x23 },
+ { "TXLX", 0x24 },
+ { "AXG", 0x25 },
+ { "GXLX", 0x26 },
+ { "TXHD", 0x27 },
+ { "G12A", 0x28 },
+ { "G12B", 0x29 },
+};
+
+static const struct meson_gx_package_id {
+ const char *name;
+ unsigned int major_id;
+ unsigned int pack_id;
+ unsigned int pack_mask;
+} soc_packages[] = {
+ { "S905", 0x1f, 0, 0x20 }, /* pack_id != 0x20 */
+ { "S905H", 0x1f, 0x3, 0xf }, /* pack_id & 0xf == 0x3 */
+ { "S905M", 0x1f, 0x20, 0xf0 }, /* pack_id == 0x20 */
+ { "S905D", 0x21, 0, 0xf0 },
+ { "S905X", 0x21, 0x80, 0xf0 },
+ { "S905W", 0x21, 0xa0, 0xf0 },
+ { "S905L", 0x21, 0xc0, 0xf0 },
+ { "S905M2", 0x21, 0xe0, 0xf0 },
+ { "S805X", 0x21, 0x30, 0xf0 },
+ { "S805Y", 0x21, 0xb0, 0xf0 },
+ { "S912", 0x22, 0, 0x0 }, /* Only S912 is known for GXM */
+ { "962X", 0x24, 0x10, 0xf0 },
+ { "962E", 0x24, 0x20, 0xf0 },
+ { "A113X", 0x25, 0x37, 0xff },
+ { "A113D", 0x25, 0x22, 0xff },
+ { "S905D2", 0x28, 0x10, 0xf0 },
+ { "S905X2", 0x28, 0x40, 0xf0 },
+ { "S922X", 0x29, 0x40, 0xf0 },
+};
+
+DECLARE_GLOBAL_DATA_PTR;
+
+static inline unsigned int socinfo_to_major(u32 socinfo)
+{
+ return FIELD_GET(SOCINFO_MAJOR, socinfo);
+}
+
+static inline unsigned int socinfo_to_minor(u32 socinfo)
+{
+ return FIELD_GET(SOCINFO_MINOR, socinfo);
+}
+
+static inline unsigned int socinfo_to_pack(u32 socinfo)
+{
+ return FIELD_GET(SOCINFO_PACK, socinfo);
+}
+
+static inline unsigned int socinfo_to_misc(u32 socinfo)
+{
+ return FIELD_GET(SOCINFO_MISC, socinfo);
+}
+
+static const char *socinfo_to_package_id(u32 socinfo)
+{
+ unsigned int pack = socinfo_to_pack(socinfo);
+ unsigned int major = socinfo_to_major(socinfo);
+ int i;
+
+ for (i = 0 ; i < ARRAY_SIZE(soc_packages) ; ++i) {
+ if (soc_packages[i].major_id == major &&
+ soc_packages[i].pack_id ==
+ (pack & soc_packages[i].pack_mask))
+ return soc_packages[i].name;
+ }
+
+ return "Unknown";
+}
+
+static const char *socinfo_to_soc_id(u32 socinfo)
+{
+ unsigned int id = socinfo_to_major(socinfo);
+ int i;
+
+ for (i = 0 ; i < ARRAY_SIZE(soc_ids) ; ++i) {
+ if (soc_ids[i].id == id)
+ return soc_ids[i].name;
+ }
+
+ return "Unknown";
+}
+
+static void print_board_model(void)
+{
+ const char *model;
+ model = fdt_getprop(gd->fdt_blob, 0, "model", NULL);
+ printf("Model: %s\n", model ? model : "Unknown");
+}
+
+int show_board_info(void)
+{
+ struct regmap *regmap;
+ int nodeoffset, ret;
+ ofnode node;
+ unsigned int socinfo;
+
+ /* find the offset of compatible node */
+ nodeoffset = fdt_node_offset_by_compatible(gd->fdt_blob, -1,
+ "amlogic,meson-gx-ao-secure");
+ if (nodeoffset < 0)
+ return 0;
+
+ /* check if chip-id is available */
+ if (!fdt_getprop(gd->fdt_blob, nodeoffset, "amlogic,has-chip-id", NULL))
+ return 0;
+
+ /* get regmap from the syscon node */
+ node = offset_to_ofnode(nodeoffset);
+ regmap = syscon_node_to_regmap(node);
+ if (IS_ERR(regmap)) {
+ printf("%s: failed to get regmap\n", __func__);
+ return 0;
+ }
+
+ /* read soc info */
+ ret = regmap_read(regmap, AO_SEC_SOCINFO_OFFSET, &socinfo);
+ if (ret && !socinfo) {
+ printf("%s: invalid chipid value\n", __func__);
+ return 0;
+ }
+
+ /* print board information */
+ print_board_model();
+ printf("Soc: Amlogic Meson %s (%s) Revision %x:%x (%x:%x)\n",
+ socinfo_to_soc_id(socinfo),
+ socinfo_to_package_id(socinfo),
+ socinfo_to_major(socinfo),
+ socinfo_to_minor(socinfo),
+ socinfo_to_pack(socinfo),
+ socinfo_to_misc(socinfo));
+
+ return 0;
+}
diff --git a/configs/khadas-vim2_defconfig b/configs/khadas-vim2_defconfig
index 0f738cb..7e40683 100644
--- a/configs/khadas-vim2_defconfig
+++ b/configs/khadas-vim2_defconfig
@@ -9,7 +9,7 @@ CONFIG_DEBUG_UART=y
CONFIG_OF_BOARD_SETUP=y
CONFIG_CONSOLE_MUX=y
# CONFIG_DISPLAY_CPUINFO is not set
-# CONFIG_DISPLAY_BOARDINFO is not set
+CONFIG_DISPLAY_BOARDINFO=y
# CONFIG_CMD_BDI is not set
# CONFIG_CMD_IMI is not set
CONFIG_CMD_ADC=y
diff --git a/configs/khadas-vim_defconfig b/configs/khadas-vim_defconfig
index 6f1ad0e..aeec2be 100644
--- a/configs/khadas-vim_defconfig
+++ b/configs/khadas-vim_defconfig
@@ -11,7 +11,7 @@ CONFIG_OF_BOARD_SETUP=y
CONFIG_CONSOLE_MUX=y
CONFIG_MISC_INIT_R=y
# CONFIG_DISPLAY_CPUINFO is not set
-# CONFIG_DISPLAY_BOARDINFO is not set
+CONFIG_DISPLAY_BOARDINFO=y
# CONFIG_CMD_BDI is not set
# CONFIG_CMD_IMI is not set
CONFIG_CMD_ADC=y
diff --git a/configs/libretech-cc_defconfig b/configs/libretech-cc_defconfig
index d28c7ab..a1b9fd9 100644
--- a/configs/libretech-cc_defconfig
+++ b/configs/libretech-cc_defconfig
@@ -10,7 +10,7 @@ CONFIG_NR_DRAM_BANKS=1
CONFIG_OF_BOARD_SETUP=y
CONFIG_MISC_INIT_R=y
# CONFIG_DISPLAY_CPUINFO is not set
-# CONFIG_DISPLAY_BOARDINFO is not set
+CONFIG_DISPLAY_BOARDINFO=y
# CONFIG_CMD_BDI is not set
# CONFIG_CMD_IMI is not set
CONFIG_CMD_ADC=y
diff --git a/configs/nanopi-k2_defconfig b/configs/nanopi-k2_defconfig
index 8bbf48f..60481cd 100644
--- a/configs/nanopi-k2_defconfig
+++ b/configs/nanopi-k2_defconfig
@@ -9,7 +9,7 @@ CONFIG_NR_DRAM_BANKS=1
CONFIG_OF_BOARD_SETUP=y
CONFIG_MISC_INIT_R=y
# CONFIG_DISPLAY_CPUINFO is not set
-# CONFIG_DISPLAY_BOARDINFO is not set
+CONFIG_DISPLAY_BOARDINFO=y
# CONFIG_CMD_BDI is not set
# CONFIG_CMD_IMI is not set
CONFIG_CMD_GPIO=y
diff --git a/configs/odroid-c2_defconfig b/configs/odroid-c2_defconfig
index 747da18..04904c2 100644
--- a/configs/odroid-c2_defconfig
+++ b/configs/odroid-c2_defconfig
@@ -10,7 +10,7 @@ CONFIG_OF_BOARD_SETUP=y
CONFIG_CONSOLE_MUX=y
CONFIG_MISC_INIT_R=y
# CONFIG_DISPLAY_CPUINFO is not set
-# CONFIG_DISPLAY_BOARDINFO is not set
+CONFIG_DISPLAY_BOARDINFO=y
# CONFIG_CMD_BDI is not set
# CONFIG_CMD_IMI is not set
CONFIG_CMD_GPIO=y
diff --git a/configs/p212_defconfig b/configs/p212_defconfig
index b048863..0422740 100644
--- a/configs/p212_defconfig
+++ b/configs/p212_defconfig
@@ -11,7 +11,7 @@ CONFIG_OF_BOARD_SETUP=y
CONFIG_CONSOLE_MUX=y
CONFIG_MISC_INIT_R=y
# CONFIG_DISPLAY_CPUINFO is not set
-# CONFIG_DISPLAY_BOARDINFO is not set
+CONFIG_DISPLAY_BOARDINFO=y
# CONFIG_CMD_BDI is not set
# CONFIG_CMD_IMI is not set
CONFIG_CMD_GPIO=y
diff --git a/configs/s400_defconfig b/configs/s400_defconfig
index 1bd4b71..6cd47d0 100644
--- a/configs/s400_defconfig
+++ b/configs/s400_defconfig
@@ -10,7 +10,7 @@ CONFIG_NR_DRAM_BANKS=1
CONFIG_OF_BOARD_SETUP=y
CONFIG_MISC_INIT_R=y
# CONFIG_DISPLAY_CPUINFO is not set
-# CONFIG_DISPLAY_BOARDINFO is not set
+CONFIG_DISPLAY_BOARDINFO=y
# CONFIG_CMD_BDI is not set
# CONFIG_CMD_IMI is not set
CONFIG_CMD_GPIO=y
--
2.7.4