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ARM: bcm2835: convert to multi-platform 

This allows BCM2835 be included in a kernel build that supports multiple
SoCs at once, which is useful for distro kernels.

This change:
* Moves bcm2835's debug-macro.S into ARM's include/debug/, and hooks it
  into the relevant menu.
* Moves bcm2835's Kconfig into its own directory, as seems typical for
  multi-platform conversions.
* Removes bcm2835_soc.h, and moves the content to the files where it was
  used; just one usage per define.
* Deletes some headers and Makefile.boot that aren't needed now that we
  support multi-platform.

Signed-off-by: Stephen Warren <swarren@wwwdotorg.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
This commit is contained in:
Stephen Warren 2013-03-11 22:40:18 -06:00
parent f6161aa153
commit f1ac922dec
11 changed files with 30 additions and 124 deletions
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22
arch/arm/Kconfig
View File

@ -362,26 +362,6 @@ config ARCH_AT91
This enables support for systems based on Atmel
AT91RM9200 and AT91SAM9* processors.
config ARCH_BCM2835
bool "Broadcom BCM2835 family"
select ARCH_REQUIRE_GPIOLIB
select ARM_AMBA
select ARM_ERRATA_411920
select ARM_TIMER_SP804
select CLKDEV_LOOKUP
select CLKSRC_OF
select COMMON_CLK
select CPU_V6
select GENERIC_CLOCKEVENTS
select MULTI_IRQ_HANDLER
select PINCTRL
select PINCTRL_BCM2835
select SPARSE_IRQ
select USE_OF
help
This enables support for the Broadcom BCM2835 SoC. This SoC is
use in the Raspberry Pi, and Roku 2 devices.
config ARCH_CNS3XXX
bool "Cavium Networks CNS3XXX family"
select ARM_GIC
@ -1037,6 +1017,8 @@ source "arch/arm/mach-at91/Kconfig"
source "arch/arm/mach-bcm/Kconfig"
source "arch/arm/mach-bcm2835/Kconfig"
source "arch/arm/mach-clps711x/Kconfig"
source "arch/arm/mach-cns3xxx/Kconfig"

5
arch/arm/Kconfig.debug
View File

@ -89,6 +89,10 @@ choice
bool "Kernel low-level debugging on 9263 and 9g45"
depends on HAVE_AT91_DBGU1
config DEBUG_BCM2835
bool "Kernel low-level debugging on BCM2835 PL011 UART"
depends on ARCH_BCM2835
config DEBUG_CLPS711X_UART1
bool "Kernel low-level debugging messages via UART1"
depends on ARCH_CLPS711X
@ -579,6 +583,7 @@ endchoice
config DEBUG_LL_INCLUDE
string
default "debug/bcm2835.S" if DEBUG_BCM2835
default "debug/icedcc.S" if DEBUG_ICEDCC
default "debug/imx.S" if DEBUG_IMX1_UART || \
DEBUG_IMX25_UART || \

2
arch/arm/configs/bcm2835_defconfig
View File

@ -29,6 +29,8 @@ CONFIG_EMBEDDED=y
CONFIG_PROFILING=y
CONFIG_OPROFILE=y
CONFIG_JUMP_LABEL=y
CONFIG_ARCH_MULTI_V6=y
# CONFIG_ARCH_MULTI_V7 is not set
CONFIG_ARCH_BCM2835=y
CONFIG_PREEMPT_VOLUNTARY=y
CONFIG_AEABI=y

3
arch/arm/mach-bcm2835/include/mach/debug-macro.S → arch/arm/include/debug/bcm2835.S
View File

@ -11,7 +11,8 @@
*
*/
#include <mach/bcm2835_soc.h>
#define BCM2835_DEBUG_PHYS 0x20201000
#define BCM2835_DEBUG_VIRT 0xf0201000
.macro addruart, rp, rv, tmp
ldr \rp, =BCM2835_DEBUG_PHYS

15
arch/arm/mach-bcm2835/Kconfig Normal file
View File

@ -0,0 +1,15 @@
config ARCH_BCM2835
bool "Broadcom BCM2835 family" if ARCH_MULTI_V6
select ARCH_REQUIRE_GPIOLIB
select ARM_AMBA
select ARM_ERRATA_411920
select ARM_TIMER_SP804
select CLKDEV_LOOKUP
select CLKSRC_OF
select CPU_V6
select GENERIC_CLOCKEVENTS
select PINCTRL
select PINCTRL_BCM2835
help
This enables support for the Broadcom BCM2835 SoC. This SoC is
use in the Raspberry Pi, and Roku 2 devices.

1
arch/arm/mach-bcm2835/Makefile.boot
View File

@ -1 +0,0 @@
zreladdr-y := 0x00008000

6
arch/arm/mach-bcm2835/bcm2835.c
View File

@ -23,8 +23,6 @@
#include <asm/mach/arch.h>
#include <asm/mach/map.h>
#include <mach/bcm2835_soc.h>
#define PM_RSTC 0x1c
#define PM_RSTS 0x20
#define PM_WDOG 0x24
@ -34,6 +32,10 @@
#define PM_RSTC_WRCFG_FULL_RESET 0x00000020
#define PM_RSTS_HADWRH_SET 0x00000040
#define BCM2835_PERIPH_PHYS 0x20000000
#define BCM2835_PERIPH_VIRT 0xf0000000
#define BCM2835_PERIPH_SIZE SZ_16M
static void __iomem *wdt_regs;
/*

29
arch/arm/mach-bcm2835/include/mach/bcm2835_soc.h
View File

@ -1,29 +0,0 @@
/*
* Copyright (C) 2012 Stephen Warren
*
* Derived from code:
* Copyright (C) 2010 Broadcom
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#ifndef __MACH_BCM2835_BCM2835_SOC_H__
#define __MACH_BCM2835_BCM2835_SOC_H__
#include <asm/sizes.h>
#define BCM2835_PERIPH_PHYS 0x20000000
#define BCM2835_PERIPH_VIRT 0xf0000000
#define BCM2835_PERIPH_SIZE SZ_16M
#define BCM2835_DEBUG_PHYS 0x20201000
#define BCM2835_DEBUG_VIRT 0xf0201000
#endif

1
arch/arm/mach-bcm2835/include/mach/gpio.h
View File

@ -1 +0,0 @@
/* empty */

26
arch/arm/mach-bcm2835/include/mach/timex.h
View File

@ -1,26 +0,0 @@
/*
* BCM2835 system clock frequency
*
* Copyright (C) 2010 Broadcom
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef __ASM_ARCH_TIMEX_H
#define __ASM_ARCH_TIMEX_H
#define CLOCK_TICK_RATE (1000000)
#endif

44
arch/arm/mach-bcm2835/include/mach/uncompress.h
View File

@ -1,44 +0,0 @@
/*
* Copyright (C) 2010 Broadcom
* Copyright (C) 2003 ARM Limited
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <linux/io.h>
#include <linux/amba/serial.h>
#include <mach/bcm2835_soc.h>
#define UART0_BASE BCM2835_DEBUG_PHYS
#define BCM2835_UART_DR IOMEM(UART0_BASE + UART01x_DR)
#define BCM2835_UART_FR IOMEM(UART0_BASE + UART01x_FR)
#define BCM2835_UART_CR IOMEM(UART0_BASE + UART011_CR)
static inline void putc(int c)
{
while (__raw_readl(BCM2835_UART_FR) & UART01x_FR_TXFF)
barrier();
__raw_writel(c, BCM2835_UART_DR);
}
static inline void flush(void)
{
int fr;
do {
fr = __raw_readl(BCM2835_UART_FR);
barrier();
} while ((fr & (UART011_FR_TXFE | UART01x_FR_BUSY)) != UART011_FR_TXFE);
}
#define arch_decomp_setup()