arm: MediaTek: add basic support for MT7629 boards
This adds a general board file based on MT7629 SoCs from MediaTek.
Apart from the generic parts (cpu) we add some low level init codes
and initialize the early clocks.
Signed-off-by: Ryder Lee <ryder.lee@mediatek.com>
Signed-off-by: Weijie Gao <weijie.gao@mediatek.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index f5d4d39..96eadb6 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -664,6 +664,20 @@
targeted at media players and tablet computers. We currently
support the S905 (GXBaby) 64-bit SoC.
+config ARCH_MEDIATEK
+ bool "MediaTek SoCs"
+ select BINMAN
+ select DM
+ select OF_CONTROL
+ select SPL_DM if SPL
+ select SPL_LIBCOMMON_SUPPORT if SPL
+ select SPL_LIBGENERIC_SUPPORT if SPL
+ select SPL_OF_CONTROL if SPL
+ select SUPPORT_SPL
+ help
+ Support for the MediaTek SoCs family developed by MediaTek Inc.
+ Please refer to doc/README.mediatek for more information.
+
config ARCH_LPC32XX
bool "NXP LPC32xx platform"
select CPU_ARM926EJS
@@ -1449,6 +1463,8 @@
source "arch/arm/mach-meson/Kconfig"
+source "arch/arm/mach-mediatek/Kconfig"
+
source "arch/arm/mach-qemu/Kconfig"
source "arch/arm/mach-rockchip/Kconfig"
diff --git a/arch/arm/Makefile b/arch/arm/Makefile
index 4b6c5e1..c38ef3c 100644
--- a/arch/arm/Makefile
+++ b/arch/arm/Makefile
@@ -62,6 +62,7 @@
machine-$(CONFIG_ARCH_KEYSTONE) += keystone
# TODO: rename CONFIG_KIRKWOOD -> CONFIG_ARCH_KIRKWOOD
machine-$(CONFIG_KIRKWOOD) += kirkwood
+machine-$(CONFIG_ARCH_MEDIATEK) += mediatek
machine-$(CONFIG_ARCH_MESON) += meson
machine-$(CONFIG_ARCH_MVEBU) += mvebu
# TODO: rename CONFIG_TEGRA -> CONFIG_ARCH_TEGRA
diff --git a/arch/arm/include/asm/arch-mediatek/misc.h b/arch/arm/include/asm/arch-mediatek/misc.h
new file mode 100644
index 0000000..2530e78
--- /dev/null
+++ b/arch/arm/include/asm/arch-mediatek/misc.h
@@ -0,0 +1,17 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2018 MediaTek Inc.
+ */
+
+#ifndef __MEDIATEK_MISC_H_
+#define __MEDIATEK_MISC_H_
+
+#define VER_BASE 0x08000000
+#define VER_SIZE 0x10
+
+#define APHW_CODE 0x00
+#define APHW_SUBCODE 0x04
+#define APHW_VER 0x08
+#define APSW_VER 0x0c
+
+#endif /* __MEDIATEK_MISC_H_ */
diff --git a/arch/arm/mach-mediatek/Kconfig b/arch/arm/mach-mediatek/Kconfig
new file mode 100644
index 0000000..d2ada97
--- /dev/null
+++ b/arch/arm/mach-mediatek/Kconfig
@@ -0,0 +1,26 @@
+if ARCH_MEDIATEK
+
+config SYS_SOC
+ default "mediatek"
+
+config SYS_VENDOR
+ default "mediatek"
+
+choice
+ prompt "MediaTek board select"
+
+config TARGET_MT7629
+ bool "MediaTek MT7629 SoC"
+ select CPU_V7A
+ select SPL
+ select ARCH_MISC_INIT
+ help
+ The MediaTek MT7629 is a ARM-based SoC with a dual-core Cortex-A7
+ including DDR3, crypto engine, 3x3 11n/ac Wi-Fi, Gigabit Ethernet,
+ switch, USB3.0, PCIe, UART, SPI, I2C and PWM.
+
+endchoice
+
+source "board/mediatek/mt7629/Kconfig"
+
+endif
diff --git a/arch/arm/mach-mediatek/Makefile b/arch/arm/mach-mediatek/Makefile
new file mode 100644
index 0000000..852d330
--- /dev/null
+++ b/arch/arm/mach-mediatek/Makefile
@@ -0,0 +1,6 @@
+# SPDX-License-Identifier: GPL-2.0
+
+obj-y += cpu.o
+obj-$(CONFIG_SPL_BUILD) += spl.o
+
+obj-$(CONFIG_TARGET_MT7629) += mt7629/
diff --git a/arch/arm/mach-mediatek/cpu.c b/arch/arm/mach-mediatek/cpu.c
new file mode 100644
index 0000000..b37e299
--- /dev/null
+++ b/arch/arm/mach-mediatek/cpu.c
@@ -0,0 +1,34 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2018 MediaTek Inc.
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <wdt.h>
+#include <dm/uclass-internal.h>
+
+int arch_misc_init(void)
+{
+ struct udevice *wdt;
+ int ret;
+
+ ret = uclass_first_device_err(UCLASS_WDT, &wdt);
+ if (!ret)
+ wdt_stop(wdt);
+
+ return 0;
+}
+
+int arch_cpu_init(void)
+{
+ icache_enable();
+
+ return 0;
+}
+
+void enable_caches(void)
+{
+ /* Enable D-cache. I-cache is already enabled in start.S */
+ dcache_enable();
+}
diff --git a/arch/arm/mach-mediatek/init.h b/arch/arm/mach-mediatek/init.h
new file mode 100644
index 0000000..1d896fb
--- /dev/null
+++ b/arch/arm/mach-mediatek/init.h
@@ -0,0 +1,11 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2018 MediaTek Inc.
+ */
+
+#ifndef __MEDIATEK_INIT_H_
+#define __MEDIATEK_INIT_H_
+
+extern int mtk_soc_early_init(void);
+
+#endif /* __MEDIATEK_INIT_H_ */
diff --git a/arch/arm/mach-mediatek/mt7629/Makefile b/arch/arm/mach-mediatek/mt7629/Makefile
new file mode 100644
index 0000000..007eb4a
--- /dev/null
+++ b/arch/arm/mach-mediatek/mt7629/Makefile
@@ -0,0 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0
+
+obj-y += init.o
+obj-y += lowlevel_init.o
diff --git a/arch/arm/mach-mediatek/mt7629/init.c b/arch/arm/mach-mediatek/mt7629/init.c
new file mode 100644
index 0000000..ba91a6e
--- /dev/null
+++ b/arch/arm/mach-mediatek/mt7629/init.c
@@ -0,0 +1,128 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2018 MediaTek Inc.
+ * Author: Ryder Lee <ryder.lee@mediatek.com>
+ */
+
+#include <clk.h>
+#include <common.h>
+#include <dm.h>
+#include <fdtdec.h>
+#include <ram.h>
+#include <asm/arch/misc.h>
+#include <asm/sections.h>
+#include <dm/uclass.h>
+#include <linux/io.h>
+
+#include <dt-bindings/clock/mt7629-clk.h>
+
+#define L2_CFG_BASE 0x10200000
+#define L2_CFG_SIZE 0x1000
+#define L2_SHARE_CFG_MP0 0x7f0
+#define L2_SHARE_MODE_OFF BIT(8)
+
+DECLARE_GLOBAL_DATA_PTR;
+
+int mtk_pll_early_init(void)
+{
+ unsigned long pll_rates[] = {
+ [CLK_APMIXED_ARMPLL] = 1250000000,
+ [CLK_APMIXED_MAINPLL] = 1120000000,
+ [CLK_APMIXED_UNIV2PLL] = 1200000000,
+ [CLK_APMIXED_ETH1PLL] = 500000000,
+ [CLK_APMIXED_ETH2PLL] = 700000000,
+ [CLK_APMIXED_SGMIPLL] = 650000000,
+ };
+ struct udevice *dev;
+ int ret, i;
+
+ ret = uclass_get_device_by_driver(UCLASS_CLK,
+ DM_GET_DRIVER(mtk_clk_apmixedsys), &dev);
+ if (ret)
+ return ret;
+
+ /* configure default rate then enable apmixedsys */
+ for (i = 0; i < ARRAY_SIZE(pll_rates); i++) {
+ struct clk clk = { .id = i, .dev = dev };
+
+ ret = clk_set_rate(&clk, pll_rates[i]);
+ if (ret)
+ return ret;
+
+ ret = clk_enable(&clk);
+ if (ret)
+ return ret;
+ }
+
+ /* setup mcu bus */
+ ret = uclass_get_device_by_driver(UCLASS_SYSCON,
+ DM_GET_DRIVER(mtk_mcucfg), &dev);
+ if (ret)
+ return ret;
+
+ return 0;
+}
+
+int mtk_soc_early_init(void)
+{
+ struct udevice *dev;
+ int ret;
+
+ /* initialize early clocks */
+ ret = mtk_pll_early_init();
+ if (ret)
+ return ret;
+
+ ret = uclass_first_device_err(UCLASS_RAM, &dev);
+ if (ret)
+ return ret;
+
+ return 0;
+}
+
+int mach_cpu_init(void)
+{
+ void __iomem *base;
+
+ base = ioremap(L2_CFG_BASE, L2_CFG_SIZE);
+
+ /* disable L2C shared mode */
+ writel(L2_SHARE_MODE_OFF, base + L2_SHARE_CFG_MP0);
+
+ return 0;
+}
+
+int dram_init(void)
+{
+ struct ram_info ram;
+ struct udevice *dev;
+ int ret;
+
+ ret = uclass_first_device_err(UCLASS_RAM, &dev);
+ if (ret)
+ return ret;
+
+ ret = ram_get_info(dev, &ram);
+ if (ret)
+ return ret;
+
+ debug("RAM init base=%lx, size=%x\n", ram.base, ram.size);
+
+ gd->ram_size = ram.size;
+
+ return 0;
+}
+
+int print_cpuinfo(void)
+{
+ void __iomem *chipid;
+ u32 hwcode, swver;
+
+ chipid = ioremap(VER_BASE, VER_SIZE);
+ hwcode = readl(chipid + APHW_CODE);
+ swver = readl(chipid + APSW_VER);
+
+ printf("CPU: MediaTek MT%04x E%d\n", hwcode, (swver & 0xf) + 1);
+
+ return 0;
+}
diff --git a/arch/arm/mach-mediatek/mt7629/lowlevel_init.S b/arch/arm/mach-mediatek/mt7629/lowlevel_init.S
new file mode 100644
index 0000000..90dd4ea
--- /dev/null
+++ b/arch/arm/mach-mediatek/mt7629/lowlevel_init.S
@@ -0,0 +1,50 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2018 MediaTek Inc.
+ */
+
+#include <linux/linkage.h>
+
+ENTRY(lowlevel_init)
+
+#ifndef CONFIG_SPL_BUILD
+ /* Return to U-Boot via saved link register */
+ mov pc, lr
+#else
+ /*
+ * Arch timer :
+ * set CNTFRQ = 20Mhz, set CNTVOFF = 0
+ */
+ movw r0, #0x2d00
+ movt r0, #0x131
+ mcr p15, 0, r0, c14, c0, 0
+
+ /* enable SMP bit */
+ mrc p15, 0, r0, c1, c0, 1
+ orr r0, r0, #0x40
+ mcr p15, 0, r0, c1, c0, 1
+
+ /* if MP core, handle secondary cores */
+ mrc p15, 0, r0, c0, c0, 5
+ ands r1, r0, #0x40000000
+ bne go @ Go if UP
+ ands r0, r0, #0x0f
+ beq go @ Go if core0 on primary core tile
+ b secondary
+
+go:
+ /* master CPU */
+ mov pc, lr
+
+secondary:
+ /* read slave CPU number into r0 firstly */
+ mrc p15, 0, r0, c0, c0, 5
+ and r0, r0, #0x0f
+
+loop:
+ dsb
+ isb
+ wfi @Zzz...
+ b loop
+#endif
+ENDPROC(lowlevel_init)
diff --git a/arch/arm/mach-mediatek/spl.c b/arch/arm/mach-mediatek/spl.c
new file mode 100644
index 0000000..9b3590f
--- /dev/null
+++ b/arch/arm/mach-mediatek/spl.c
@@ -0,0 +1,43 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2018 MediaTek Inc.
+ * Author: Ryder Lee <ryder.lee@mediatek.com>
+ */
+
+#include <clk.h>
+#include <common.h>
+#include <spl.h>
+
+#include "init.h"
+
+void board_init_f(ulong dummy)
+{
+ int ret;
+
+ ret = spl_early_init();
+ if (ret)
+ hang();
+
+ /* enable console uart printing */
+ preloader_console_init();
+
+ /* soc early initialization */
+ ret = mtk_soc_early_init();
+ if (ret)
+ hang();
+}
+
+u32 spl_boot_device(void)
+{
+#if defined(CONFIG_SPL_SPI_SUPPORT)
+ return BOOT_DEVICE_SPI;
+#elif defined(CONFIG_SPL_MMC_SUPPORT)
+ return BOOT_DEVICE_MMC1;
+#elif defined(CONFIG_SPL_NAND_SUPPORT)
+ return BOOT_DEVICE_NAND;
+#elif defined(CONFIG_SPL_NOR_SUPPORT)
+ return BOOT_DEVICE_NOR;
+#else
+ return BOOT_DEVICE_NONE;
+#endif
+}