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Commit cc611137 authored by Uwe Kleine-König's avatar Uwe Kleine-König Committed by Arnd Bergmann
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ARM: drop efm32 platform 

I didn't touch this code since it served as a platform to introduce
ARMv7-M support to Linux. The only known machine that runs Linux has only
4 MiB of RAM (that originally only exists to hold the display's framebuffer).

There are no known users and no further use foreseeable, so drop the
code.
Signed-off-by: default avatarUwe Kleine-König <u.kleine-koenig@pengutronix.de>
Link: https://lore.kernel.org/r/20210115155130.185010-2-u.kleine-koenig@pengutronix.de'
Signed-off-by: default avatarArnd Bergmann <arnd@arndb.de>
parent 665a8799
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Showing with 1 addition and 460 deletions
arch/arm/Kconfig
View file @ cc611137
......@@ -725,14 +725,6 @@ source "arch/arm/mach-zx/Kconfig"
source "arch/arm/mach-zynq/Kconfig"
# ARMv7-M architecture
config ARCH_EFM32
bool "Energy Micro efm32"
depends on ARM_SINGLE_ARMV7M
select GPIOLIB
help
Support for Energy Micro's (now Silicon Labs) efm32 Giant Gecko
processors.
config ARCH_LPC18XX
bool "NXP LPC18xx/LPC43xx"
depends on ARM_SINGLE_ARMV7M
......@@ -1550,7 +1542,7 @@ config ARM_MODULE_PLTS
config FORCE_MAX_ZONEORDER
int "Maximum zone order"
default "12" if SOC_AM33XX
default "9" if SA1111 || ARCH_EFM32
default "9" if SA1111
default "11"
help
The kernel memory allocator divides physically contiguous memory
......
arch/arm/Kconfig.debug
View file @ cc611137
......@@ -1448,20 +1448,6 @@ choice
options; the platform specific options are deprecated
and will be soon removed.
config DEBUG_LL_UART_EFM32
bool "Kernel low-level debugging via efm32 UART"
depends on ARCH_EFM32
help
Say Y here if you want the debug print routines to direct
their output to an UART or USART port on efm32 based
machines. Use the following addresses for DEBUG_UART_PHYS:
0x4000c000 | USART0
0x4000c400 | USART1
0x4000c800 | USART2
0x4000e000 | UART0
0x4000e400 | UART1
config DEBUG_LL_UART_PL01X
bool "Kernel low-level debugging via ARM Ltd PL01x Primecell UART"
help
......@@ -1579,7 +1565,6 @@ config DEBUG_LL_INCLUDE
default "debug/meson.S" if DEBUG_MESON_UARTAO
default "debug/pl01x.S" if DEBUG_LL_UART_PL01X || DEBUG_UART_PL01X
default "debug/exynos.S" if DEBUG_EXYNOS_UART
default "debug/efm32.S" if DEBUG_LL_UART_EFM32
default "debug/icedcc.S" if DEBUG_ICEDCC
default "debug/imx.S" if DEBUG_IMX1_UART || \
DEBUG_IMX25_UART || \
......@@ -1674,7 +1659,6 @@ config DEBUG_UART_PHYS
default 0x20201000 if DEBUG_BCM2835
default 0x3e000000 if DEBUG_BCM_KONA_UART
default 0x3f201000 if DEBUG_BCM2836
default 0x4000e400 if DEBUG_LL_UART_EFM32
default 0x40010000 if STM32MP1_DEBUG_UART
default 0x40011000 if STM32F4_DEBUG_UART || STM32F7_DEBUG_UART || \
STM32H7_DEBUG_UART
......@@ -1759,7 +1743,6 @@ config DEBUG_UART_PHYS
default 0xfffff200 if DEBUG_AT91_RM9200_DBGU
depends on ARCH_EP93XX || \
DEBUG_LL_UART_8250 || DEBUG_LL_UART_PL01X || \
DEBUG_LL_UART_EFM32 || \
DEBUG_UART_8250 || DEBUG_UART_PL01X || DEBUG_MESON_UARTAO || \
DEBUG_QCOM_UARTDM || DEBUG_R7S72100_SCIF2 || \
DEBUG_R7S9210_SCIF2 || DEBUG_R7S9210_SCIF4 || \
......
arch/arm/Makefile
View file @ cc611137
......@@ -168,7 +168,6 @@ machine-$(CONFIG_ARCH_CNS3XXX) += cns3xxx
machine-$(CONFIG_ARCH_DAVINCI) += davinci
machine-$(CONFIG_ARCH_DIGICOLOR) += digicolor
machine-$(CONFIG_ARCH_DOVE) += dove
machine-$(CONFIG_ARCH_EFM32) += efm32
machine-$(CONFIG_ARCH_EP93XX) += ep93xx
machine-$(CONFIG_ARCH_EXYNOS) += exynos
machine-$(CONFIG_ARCH_FOOTBRIDGE) += footbridge
......
arch/arm/boot/dts/Makefile
View file @ cc611137
......@@ -177,8 +177,6 @@ dtb-$(CONFIG_ARCH_DAVINCI) += \
da850-lego-ev3.dtb
dtb-$(CONFIG_ARCH_DIGICOLOR) += \
cx92755_equinox.dtb
dtb-$(CONFIG_ARCH_EFM32) += \
efm32gg-dk3750.dtb
dtb-$(CONFIG_ARCH_EXYNOS3) += \
exynos3250-artik5-eval.dtb \
exynos3250-monk.dtb \
......
arch/arm/boot/dts/efm32gg-dk3750.dts deleted 100644 → 0
View file @ 665a8799
// SPDX-License-Identifier: GPL-2.0
/*
* Device tree for EFM32GG-DK3750 development board.
*
* Documentation available from
* http://www.silabs.com/Support%20Documents/TechnicalDocs/efm32gg-dk3750-ug.pdf
*/
/dts-v1/;
#include "efm32gg.dtsi"
/ {
model = "Energy Micro Giant Gecko Development Kit";
compatible = "efm32,dk3750";
chosen {
bootargs = "console=ttyefm4,115200 init=/linuxrc ignore_loglevel ihash_entries=64 dhash_entries=64 earlyprintk uclinux.physaddr=0x8c400000 root=/dev/mtdblock0";
};
memory@88000000 {
device_type = "memory";
reg = <0x88000000 0x400000>;
};
soc {
adc@40002000 {
status = "ok";
};
i2c@4000a000 {
energymicro,location = <3>;
status = "ok";
temp@48 {
compatible = "st,stds75";
reg = <0x48>;
};
eeprom@50 {
compatible = "microchip,24c02", "atmel,24c02";
reg = <0x50>;
pagesize = <16>;
};
};
spi0: spi@4000c000 { /* USART0 */
cs-gpios = <&gpio 68 1>; // E4
energymicro,location = <1>;
status = "ok";
microsd@0 {
compatible = "mmc-spi-slot";
spi-max-frequency = <100000>;
voltage-ranges = <3200 3400>;
broken-cd;
reg = <0>;
};
};
spi1: spi@4000c400 { /* USART1 */
cs-gpios = <&gpio 51 1>; // D3
energymicro,location = <1>;
status = "ok";
ks8851@0 {
compatible = "ks8851";
spi-max-frequency = <6000000>;
reg = <0>;
interrupt-parent = <&boardfpga>;
interrupts = <4>;
};
};
uart4: uart@4000e400 { /* UART1 */
energymicro,location = <2>;
status = "ok";
};
boardfpga: boardfpga@80000000 {
compatible = "efm32board";
reg = <0x80000000 0x400>;
irq-gpios = <&gpio 64 1>;
interrupt-controller;
#interrupt-cells = <1>;
status = "ok";
};
};
};
arch/arm/boot/dts/efm32gg.dtsi deleted 100644 → 0
View file @ 665a8799
// SPDX-License-Identifier: GPL-2.0
/*
* Device tree for Energy Micro EFM32 Giant Gecko SoC.
*
* Documentation available from
* http://www.silabs.com/Support%20Documents/TechnicalDocs/EFM32GG-RM.pdf
*/
#include "armv7-m.dtsi"
#include "dt-bindings/clock/efm32-cmu.h"
/ {
#address-cells = <1>;
#size-cells = <1>;
aliases {
i2c0 = &i2c0;
i2c1 = &i2c1;
serial0 = &uart0;
serial1 = &uart1;
serial2 = &uart2;
serial3 = &uart3;
serial4 = &uart4;
spi0 = &spi0;
spi1 = &spi1;
spi2 = &spi2;
};
soc {
adc: adc@40002000 {
compatible = "energymicro,efm32-adc";
reg = <0x40002000 0x400>;
interrupts = <7>;
clocks = <&cmu clk_HFPERCLKADC0>;
status = "disabled";
};
gpio: gpio@40006000 {
compatible = "energymicro,efm32-gpio";
reg = <0x40006000 0x1000>;
interrupts = <1 11>;
gpio-controller;
#gpio-cells = <2>;
interrupt-controller;
#interrupt-cells = <1>;
clocks = <&cmu clk_HFPERCLKGPIO>;
status = "ok";
};
i2c0: i2c@4000a000 {
#address-cells = <1>;
#size-cells = <0>;
compatible = "energymicro,efm32-i2c";
reg = <0x4000a000 0x400>;
interrupts = <9>;
clocks = <&cmu clk_HFPERCLKI2C0>;
clock-frequency = <100000>;
status = "disabled";
};
i2c1: i2c@4000a400 {
#address-cells = <1>;
#size-cells = <0>;
compatible = "energymicro,efm32-i2c";
reg = <0x4000a400 0x400>;
interrupts = <10>;
clocks = <&cmu clk_HFPERCLKI2C1>;
clock-frequency = <100000>;
status = "disabled";
};
spi0: spi@4000c000 { /* USART0 */
#address-cells = <1>;
#size-cells = <0>;
compatible = "energymicro,efm32-spi";
reg = <0x4000c000 0x400>;
interrupts = <3 4>;
clocks = <&cmu clk_HFPERCLKUSART0>;
status = "disabled";
};
spi1: spi@4000c400 { /* USART1 */
#address-cells = <1>;
#size-cells = <0>;
compatible = "energymicro,efm32-spi";
reg = <0x4000c400 0x400>;
interrupts = <15 16>;
clocks = <&cmu clk_HFPERCLKUSART1>;
status = "disabled";
};
spi2: spi@4000c800 { /* USART2 */
#address-cells = <1>;
#size-cells = <0>;
compatible = "energymicro,efm32-spi";
reg = <0x4000c800 0x400>;
interrupts = <18 19>;
clocks = <&cmu clk_HFPERCLKUSART2>;
status = "disabled";
};
uart0: uart@4000c000 { /* USART0 */
compatible = "energymicro,efm32-uart";
reg = <0x4000c000 0x400>;
interrupts = <3 4>;
clocks = <&cmu clk_HFPERCLKUSART0>;
status = "disabled";
};
uart1: uart@4000c400 { /* USART1 */
compatible = "energymicro,efm32-uart";
reg = <0x4000c400 0x400>;
interrupts = <15 16>;
clocks = <&cmu clk_HFPERCLKUSART1>;
status = "disabled";
};
uart2: uart@4000c800 { /* USART2 */
compatible = "energymicro,efm32-uart";
reg = <0x4000c800 0x400>;
interrupts = <18 19>;
clocks = <&cmu clk_HFPERCLKUSART2>;
status = "disabled";
};
uart3: uart@4000e000 { /* UART0 */
compatible = "energymicro,efm32-uart";
reg = <0x4000e000 0x400>;
interrupts = <20 21>;
clocks = <&cmu clk_HFPERCLKUART0>;
status = "disabled";
};
uart4: uart@4000e400 { /* UART1 */
compatible = "energymicro,efm32-uart";
reg = <0x4000e400 0x400>;
interrupts = <22 23>;
clocks = <&cmu clk_HFPERCLKUART1>;
status = "disabled";
};
timer0: timer@40010000 {
compatible = "energymicro,efm32-timer";
reg = <0x40010000 0x400>;
interrupts = <2>;
clocks = <&cmu clk_HFPERCLKTIMER0>;
};
timer1: timer@40010400 {
compatible = "energymicro,efm32-timer";
reg = <0x40010400 0x400>;
interrupts = <12>;
clocks = <&cmu clk_HFPERCLKTIMER1>;
};
timer2: timer@40010800 {
compatible = "energymicro,efm32-timer";
reg = <0x40010800 0x400>;
interrupts = <13>;
clocks = <&cmu clk_HFPERCLKTIMER2>;
};
timer3: timer@40010c00 {
compatible = "energymicro,efm32-timer";
reg = <0x40010c00 0x400>;
interrupts = <14>;
clocks = <&cmu clk_HFPERCLKTIMER3>;
};
cmu: cmu@400c8000 {
compatible = "efm32gg,cmu";
reg = <0x400c8000 0x400>;
interrupts = <32>;
#clock-cells = <1>;
};
};
};
arch/arm/configs/efm32_defconfig deleted 100644 → 0
View file @ 665a8799
CONFIG_HIGH_RES_TIMERS=y
CONFIG_LOG_BUF_SHIFT=12
CONFIG_CC_OPTIMIZE_FOR_SIZE=y
# CONFIG_UID16 is not set
# CONFIG_BASE_FULL is not set
# CONFIG_FUTEX is not set
# CONFIG_EPOLL is not set
# CONFIG_SIGNALFD is not set
# CONFIG_EVENTFD is not set
# CONFIG_AIO is not set
CONFIG_EMBEDDED=y
# CONFIG_VM_EVENT_COUNTERS is not set
# CONFIG_SLUB_DEBUG is not set
# CONFIG_BLK_DEV_BSG is not set
# CONFIG_MMU is not set
CONFIG_ARM_SINGLE_ARMV7M=y
CONFIG_ARCH_EFM32=y
CONFIG_SET_MEM_PARAM=y
CONFIG_DRAM_BASE=0x88000000
CONFIG_DRAM_SIZE=0x00400000
CONFIG_FLASH_MEM_BASE=0x8c000000
CONFIG_FLASH_SIZE=0x01000000
CONFIG_PREEMPT=y
CONFIG_ZBOOT_ROM_TEXT=0x0
CONFIG_ZBOOT_ROM_BSS=0x0
CONFIG_XIP_KERNEL=y
CONFIG_XIP_PHYS_ADDR=0x8c000000
CONFIG_BINFMT_FLAT=y
CONFIG_BINFMT_SHARED_FLAT=y
# CONFIG_COREDUMP is not set
CONFIG_NET=y
CONFIG_PACKET=y
CONFIG_UNIX=y
CONFIG_INET=y
# CONFIG_INET_XFRM_MODE_TRANSPORT is not set
# CONFIG_INET_XFRM_MODE_TUNNEL is not set
# CONFIG_INET_XFRM_MODE_BEET is not set
# CONFIG_INET_DIAG is not set
# CONFIG_IPV6 is not set
# CONFIG_WIRELESS is not set
CONFIG_DEVTMPFS=y
CONFIG_DEVTMPFS_MOUNT=y
# CONFIG_FW_LOADER is not set
CONFIG_MTD=y
CONFIG_MTD_BLOCK_RO=y
CONFIG_MTD_ROM=y
CONFIG_MTD_UCLINUX=y
# CONFIG_BLK_DEV is not set
CONFIG_NETDEVICES=y
# CONFIG_NET_VENDOR_ARC is not set
# CONFIG_NET_CADENCE is not set
# CONFIG_NET_VENDOR_BROADCOM is not set
# CONFIG_NET_VENDOR_CIRRUS is not set
# CONFIG_NET_VENDOR_FARADAY is not set
# CONFIG_NET_VENDOR_INTEL is not set
# CONFIG_NET_VENDOR_MARVELL is not set
CONFIG_KS8851=y
# CONFIG_NET_VENDOR_MICROCHIP is not set
# CONFIG_NET_VENDOR_NATSEMI is not set
# CONFIG_NET_VENDOR_SEEQ is not set
# CONFIG_NET_VENDOR_SMSC is not set
# CONFIG_NET_VENDOR_STMICRO is not set
# CONFIG_NET_VENDOR_VIA is not set
# CONFIG_NET_VENDOR_WIZNET is not set
# CONFIG_WLAN is not set
# CONFIG_INPUT is not set
# CONFIG_SERIO is not set
# CONFIG_VT is not set
# CONFIG_UNIX98_PTYS is not set
# CONFIG_LEGACY_PTYS is not set
CONFIG_SERIAL_NONSTANDARD=y
# CONFIG_DEVKMEM is not set
CONFIG_SERIAL_EFM32_UART=y
CONFIG_SERIAL_EFM32_UART_CONSOLE=y
# CONFIG_HW_RANDOM is not set
CONFIG_I2C=y
# CONFIG_I2C_COMPAT is not set
CONFIG_I2C_EFM32=y
CONFIG_SPI=y
CONFIG_SPI_EFM32=y
CONFIG_GPIO_SYSFS=y
# CONFIG_USB_SUPPORT is not set
CONFIG_MMC=y
CONFIG_MMC_SPI=y
CONFIG_EXT2_FS=y
# CONFIG_FILE_LOCKING is not set
# CONFIG_DNOTIFY is not set
# CONFIG_INOTIFY_USER is not set
CONFIG_ROMFS_FS=y
CONFIG_ROMFS_BACKED_BY_MTD=y
# CONFIG_NETWORK_FILESYSTEMS is not set
CONFIG_PRINTK_TIME=y
CONFIG_DEBUG_INFO=y
# CONFIG_ENABLE_MUST_CHECK is not set
CONFIG_MAGIC_SYSRQ=y
# CONFIG_SCHED_DEBUG is not set
# CONFIG_DEBUG_BUGVERBOSE is not set
# CONFIG_FTRACE is not set
arch/arm/include/debug/efm32.S deleted 100644 → 0
View file @ 665a8799
/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Copyright (C) 2013 Pengutronix
* Uwe Kleine-Koenig <u.kleine-koenig@pengutronix.de>
*/
#define UARTn_CMD 0x000c
#define UARTn_CMD_TXEN 0x0004
#define UARTn_STATUS 0x0010
#define UARTn_STATUS_TXC 0x0020
#define UARTn_STATUS_TXBL 0x0040
#define UARTn_TXDATA 0x0034
.macro addruart, rx, tmp, tmp2
ldr \rx, =(CONFIG_DEBUG_UART_PHYS)
/*
* enable TX. The driver might disable it to save energy. We
* don't care about disabling at the end as during debug power
* consumption isn't that important.
*/
ldr \tmp, =(UARTn_CMD_TXEN)
str \tmp, [\rx, #UARTn_CMD]
.endm
.macro senduart,rd,rx
strb \rd, [\rx, #UARTn_TXDATA]
.endm
.macro waituartcts,rd,rx
.endm
.macro waituarttxrdy,rd,rx
1001: ldr \rd, [\rx, #UARTn_STATUS]
tst \rd, #UARTn_STATUS_TXBL
beq 1001b
.endm
.macro busyuart,rd,rx
1001: ldr \rd, [\rx, UARTn_STATUS]
tst \rd, #UARTn_STATUS_TXC
bne 1001b
.endm
arch/arm/mach-efm32/Makefile deleted 100644 → 0
View file @ 665a8799
# SPDX-License-Identifier: GPL-2.0-only
obj-y += dtmachine.o
arch/arm/mach-efm32/Makefile.boot deleted 100644 → 0
View file @ 665a8799
# SPDX-License-Identifier: GPL-2.0-only
# Empty file waiting for deletion once Makefile.boot isn't needed any more.
# Patch waits for application at
# http://www.arm.linux.org.uk/developer/patches/viewpatch.php?id=7889/1 .
arch/arm/mach-efm32/dtmachine.c deleted 100644 → 0
View file @ 665a8799
// SPDX-License-Identifier: GPL-2.0
#include <linux/kernel.h>
#include <asm/v7m.h>
#include <asm/mach/arch.h>
static const char *const efm32gg_compat[] __initconst = {
"efm32,dk3750",
NULL
};
DT_MACHINE_START(EFM32DT, "EFM32 (Device Tree Support)")
.dt_compat = efm32gg_compat,
.restart = armv7m_restart,
MACHINE_END
arch/arm/mm/Kconfig
View file @ cc611137
......@@ -638,7 +638,6 @@ config CPU_V7M_NUM_IRQ
int "Number of external interrupts connected to the NVIC"
depends on CPU_V7M
default 90 if ARCH_STM32
default 38 if ARCH_EFM32
default 112 if SOC_VF610
default 240
help
......
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