@@ -699,6 +699,8 @@ source "arch/arm/mach-qcom/Kconfig"
source "arch/arm/mach-rda/Kconfig"
+source "arch/arm/mach-realtek/Kconfig"
+
source "arch/arm/mach-realview/Kconfig"
source "arch/arm/mach-rockchip/Kconfig"
@@ -148,6 +148,8 @@ head-y := arch/arm/kernel/head$(MMUEXT).o
textofs-y := 0x00008000
# We don't want the htc bootloader to corrupt kernel during resume
textofs-$(CONFIG_PM_H1940) := 0x00108000
+# RTD1195 has Boot ROM at start of address space
+textofs-$(CONFIG_ARCH_REALTEK) := 0x00108000
# SA1111 DMA bug: we don't want the kernel to live in precious DMA-able memory
ifeq ($(CONFIG_ARCH_SA1100),y)
textofs-$(CONFIG_SA1111) := 0x00208000
@@ -207,6 +209,7 @@ machine-$(CONFIG_ARCH_PICOXCELL) += picoxcell
machine-$(CONFIG_ARCH_PXA) += pxa
machine-$(CONFIG_ARCH_QCOM) += qcom
machine-$(CONFIG_ARCH_RDA) += rda
+machine-$(CONFIG_ARCH_REALTEK) += realtek
machine-$(CONFIG_ARCH_REALVIEW) += realview
machine-$(CONFIG_ARCH_ROCKCHIP) += rockchip
machine-$(CONFIG_ARCH_RPC) += rpc
new file mode 100644
@@ -0,0 +1,11 @@
+# SPDX-License-Identifier: GPL-2.0-or-later
+menuconfig ARCH_REALTEK
+ bool "Realtek SoCs"
+ depends on ARCH_MULTI_V7
+ select ARM_GIC
+ select ARM_GLOBAL_TIMER
+ select CLKSRC_ARM_GLOBAL_TIMER_SCHED_CLOCK
+ select GENERIC_IRQ_CHIP
+ select RESET_CONTROLLER
+ help
+ This enables support for the Realtek RTD1195 SoC family.
new file mode 100644
@@ -0,0 +1,2 @@
+# SPDX-License-Identifier: GPL-2.0-or-later
+obj-y += rtd1195.o
new file mode 100644
@@ -0,0 +1,40 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Realtek RTD1195
+ *
+ * Copyright (c) 2017-2019 Andreas Färber
+ */
+
+#include <linux/memblock.h>
+#include <asm/mach/arch.h>
+
+static void __init rtd1195_memblock_remove(phys_addr_t base, phys_addr_t size)
+{
+ int ret;
+
+ ret = memblock_remove(base, size);
+ if (ret)
+ pr_err("Failed to remove memblock %pa (%d)\n", &base, ret);
+}
+
+static void __init rtd1195_reserve(void)
+{
+ /* Exclude boot ROM from RAM */
+ rtd1195_memblock_remove(0x00000000, 0x0000a800);
+
+ /* Exclude peripheral register spaces from RAM */
+ rtd1195_memblock_remove(0x18000000, 0x00070000);
+ rtd1195_memblock_remove(0x18100000, 0x01000000);
+}
+
+static const char *const rtd1195_dt_compat[] __initconst = {
+ "realtek,rtd1195",
+ NULL
+};
+
+DT_MACHINE_START(rtd1195, "Realtek RTD1195")
+ .dt_compat = rtd1195_dt_compat,
+ .reserve = rtd1195_reserve,
+ .l2c_aux_val = 0x0,
+ .l2c_aux_mask = ~0x0,
+MACHINE_END
Introduce ARCH_REALTEK Kconfig option also for 32-bit Arm. Override the text offset to cope with boot ROM occupying first 0xa800 bytes and further reservations up to 0xf4000 (compare Device Tree). Add a custom machine_desc to enforce memory carveout for I/O registers. Signed-off-by: Andreas Färber <afaerber@suse.de> --- v3 -> v4: * Added reservation of boot ROM (James) v2 -> v3: * Fixed r-bus size in .reserve from 0x100000 to 0x70000 (James) v1 -> v2: * Dropped selection of COMMON_CLK (Arnd) * Dropped selection of AMBA, SCU, TWD * Added comment about text offset to distinguish from HTC comment above * Added machine_desc with .reserve to exclude peripheral spaces (Rob) arch/arm/Kconfig | 2 ++ arch/arm/Makefile | 3 +++ arch/arm/mach-realtek/Kconfig | 11 +++++++++++ arch/arm/mach-realtek/Makefile | 2 ++ arch/arm/mach-realtek/rtd1195.c | 40 ++++++++++++++++++++++++++++++++++++++++ 5 files changed, 58 insertions(+) create mode 100644 arch/arm/mach-realtek/Kconfig create mode 100644 arch/arm/mach-realtek/Makefile create mode 100644 arch/arm/mach-realtek/rtd1195.c -- 2.16.4