target/linux/bcm53xx/patches-3.10/0008-bcm53xx-initial-support-for-the-BCM5301-BCM470X-SoC-.patch

   1 From 6c55b7f2fe06eb01f4ca6dad35d54c6e2ecbff25 Mon Sep 17 00:00:00 2001
   2 From: Hauke Mehrtens <hauke@hauke-m.de>
   3 Date: Sat, 29 Jun 2013 22:06:43 +0200
   4 Subject: [PATCH 08/17] bcm53xx: initial support for the BCM5301/BCM470X SoC
   5  with ARM CPU
   6
   7 This patch adds support for the BCM5301/BCM470X SoCs with an ARM CPU.
   8 Currently just booting to a shell is working and nothing else, no
   9 Ethernet, wifi, flash, ...
  10
  11 Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
  12 ---
  13  arch/arm/Kconfig                            |    2 +
  14  arch/arm/Kconfig.debug                      |    5 ++
  15  arch/arm/Makefile                           |    1 +
  16  arch/arm/boot/dts/Makefile                  |    1 +
  17  arch/arm/boot/dts/bcm5301-netgear-r6250.dts |   20 +++++++
  18  arch/arm/boot/dts/bcm5301.dtsi              |   83 +++++++++++++++++++++++++++
  19  arch/arm/include/debug/bcm53xx.S            |   19 ++++++
  20  arch/arm/mach-bcm53xx/Kconfig               |   15 +++++
  21  arch/arm/mach-bcm53xx/Makefile              |    1 +
  22  arch/arm/mach-bcm53xx/bcm53xx.c             |   69 ++++++++++++++++++++++
  23  10 files changed, 216 insertions(+)
  24  create mode 100644 arch/arm/boot/dts/bcm5301-netgear-r6250.dts
  25  create mode 100644 arch/arm/boot/dts/bcm5301.dtsi
  26  create mode 100644 arch/arm/include/debug/bcm53xx.S
  27  create mode 100644 arch/arm/mach-bcm53xx/Kconfig
  28  create mode 100644 arch/arm/mach-bcm53xx/Makefile
  29  create mode 100644 arch/arm/mach-bcm53xx/bcm53xx.c
  30
  31 --- a/arch/arm/Kconfig
  32 +++ b/arch/arm/Kconfig
  33 @@ -922,6 +922,8 @@ source "arch/arm/mach-bcm/Kconfig"
  34
  35  source "arch/arm/mach-bcm2835/Kconfig"
  36
  37 +source "arch/arm/mach-bcm53xx/Kconfig"
  38 +
  39  source "arch/arm/mach-clps711x/Kconfig"
  40
  41  source "arch/arm/mach-cns3xxx/Kconfig"
  42 --- a/arch/arm/Kconfig.debug
  43 +++ b/arch/arm/Kconfig.debug
  44 @@ -93,6 +93,10 @@ choice
  45                 bool "Kernel low-level debugging on BCM2835 PL011 UART"
  46                 depends on ARCH_BCM2835
  47
  48 +       config DEBUG_BCM53XX
  49 +               bool "Kernel low-level debugging on BCM53XX UART1"
  50 +               depends on ARCH_BCM53XX
  51 +
  52         config DEBUG_CLPS711X_UART1
  53                 bool "Kernel low-level debugging messages via UART1"
  54                 depends on ARCH_CLPS711X
  55 @@ -620,6 +624,7 @@ endchoice
  56  config DEBUG_LL_INCLUDE
  57         string
  58         default "debug/bcm2835.S" if DEBUG_BCM2835
  59 +       default "debug/bcm53xx.S" if DEBUG_BCM53XX
  60         default "debug/cns3xxx.S" if DEBUG_CNS3XXX
  61         default "debug/exynos.S" if DEBUG_EXYNOS_UART
  62         default "debug/highbank.S" if DEBUG_HIGHBANK_UART
  63 --- a/arch/arm/Makefile
  64 +++ b/arch/arm/Makefile
  65 @@ -145,6 +145,7 @@ textofs-$(CONFIG_ARCH_MSM8960) := 0x0020
  66  machine-$(CONFIG_ARCH_AT91)            += at91
  67  machine-$(CONFIG_ARCH_BCM)             += bcm
  68  machine-$(CONFIG_ARCH_BCM2835)         += bcm2835
  69 +machine-$(CONFIG_ARCH_BCM53XX)         += bcm53xx
  70  machine-$(CONFIG_ARCH_CLPS711X)                += clps711x
  71  machine-$(CONFIG_ARCH_CNS3XXX)         += cns3xxx
  72  machine-$(CONFIG_ARCH_DAVINCI)         += davinci
  73 --- a/arch/arm/boot/dts/Makefile
  74 +++ b/arch/arm/boot/dts/Makefile
  75 @@ -209,6 +209,7 @@ dtb-$(CONFIG_ARCH_VT8500) += vt8500-bv07
  76         wm8650-mid.dtb \
  77         wm8850-w70v2.dtb
  78  dtb-$(CONFIG_ARCH_ZYNQ) += zynq-zc702.dtb
  79 +dtb-$(CONFIG_ARCH_BCM53XX) += bcm5301-netgear-r6250.dtb
  80
  81  targets += dtbs
  82  targets += $(dtb-y)
  83 --- /dev/null
  84 +++ b/arch/arm/boot/dts/bcm5301-netgear-r6250.dts
  85 @@ -0,0 +1,20 @@
  86 +/*
  87 + * Broadcom BCM47XX / BCM53XX arm platform code.
  88 + *
  89 + * Copyright 2013 Hauke Mehrtens <hauke@hauke-m.de>
  90 + *
  91 + * Licensed under the GNU/GPL. See COPYING for details.
  92 + */
  93 +
  94 +/dts-v1/;
  95 +
  96 +/include/ "bcm5301.dtsi"
  97 +
  98 +/ {
  99 +       model = "Netgear R6250 V1 (BCM4708)";
 100 +       compatible = "netgear,r6250v1", "brcm,bcm5301";
 101 +
 102 +       memory {
 103 +               reg = <0x00000000 0x08000000>;
 104 +       };
 105 +};
 106 --- /dev/null
 107 +++ b/arch/arm/boot/dts/bcm5301.dtsi
 108 @@ -0,0 +1,83 @@
 109 +/*
 110 + * Broadcom BCM47XX / BCM53XX ARM platform code.
 111 + *
 112 + * Copyright 2013 Hauke Mehrtens <hauke@hauke-m.de>
 113 + *
 114 + * Licensed under the GNU/GPL. See COPYING for details.
 115 + */
 116 +
 117 +/include/ "skeleton.dtsi"
 118 +
 119 +/ {
 120 +       compatible = "brcm,bcm5301";
 121 +       model = "BCM5301/BCM4707/BCM4708/BCM4709 SoC";
 122 +       interrupt-parent = <&gic>;
 123 +
 124 +       chosen {
 125 +               bootargs = "console=ttyS0,115200 earlyprintk debug vmalloc=64M";
 126 +       };
 127 +
 128 +       cpus {
 129 +               #address-cells = <1>;
 130 +               #size-cells = <0>;
 131 +
 132 +               cpu@0 {
 133 +                       device_type = "cpu";
 134 +                       compatible = "arm,cortex-a9";
 135 +                       reg = <0>;
 136 +               };
 137 +               cpu@1 {
 138 +                       device_type = "cpu";
 139 +                       compatible = "arm,cortex-a9";
 140 +                       reg = <1>;
 141 +               };
 142 +       };
 143 +
 144 +       clocks {
 145 +               #address-cells = <1>;
 146 +               #size-cells = <0>;
 147 +
 148 +               clk_periph: periph {
 149 +                       compatible = "fixed-clock";
 150 +                       #clock-cells = <0>;
 151 +                       clock-frequency = <400000000>;
 152 +               };
 153 +       };
 154 +
 155 +       uart@18000300 {
 156 +               compatible = "ns16550";
 157 +               reg = <0x18000300 0x100>;
 158 +               interrupts = <0 85 4>;
 159 +               clock-frequency = <100000000>;
 160 +       };
 161 +
 162 +       uart@18000400 {
 163 +               compatible = "ns16550";
 164 +               reg = <0x18000400 0x100>;
 165 +               interrupts = <0 85 4>;
 166 +               clock-frequency = <100000000>;
 167 +       };
 168 +
 169 +       gic: interrupt-controller@19021000 {
 170 +               compatible = "arm,cortex-a9-gic";
 171 +               #interrupt-cells = <3>;
 172 +               #address-cells = <0>;
 173 +               interrupt-controller;
 174 +               reg = <0x19021000 0x1000>,
 175 +                     <0x19020100 0x100>;
 176 +       };
 177 +
 178 +       timer@19020200 {
 179 +               compatible = "arm,cortex-a9-global-timer";
 180 +               reg = <0x19020200 0x100>;
 181 +               interrupts = <1 11 0xf04>;
 182 +               clocks = <&clk_periph>;
 183 +               #clock-cells = <0>;
 184 +       };
 185 +
 186 +       local-timer@19020200 {
 187 +               compatible = "arm,cortex-a9-twd-timer";
 188 +               reg = <0x19020600 0x100>;
 189 +               interrupts = <1 13 0xf04>;
 190 +       };
 191 +};
 192 --- /dev/null
 193 +++ b/arch/arm/include/debug/bcm53xx.S
 194 @@ -0,0 +1,19 @@
 195 +/*
 196 + * Macros used for EARLY_PRINTK, in low-level UART debug console
 197 + *
 198 + * Copyright 2013 Hauke Mehrtens <hauke@hauke-m.de>
 199 + *
 200 + * Licensed under the GNU/GPL. See COPYING for details.
 201 + */
 202 +
 203 +#define BCM53XX_UART1_PHYS     0x18000300
 204 +#define BCM53XX_UART1_VIRT     0xf1000300
 205 +#define BCM53XX_UART1_SH       0
 206 +
 207 +       .macro  addruart, rp, rv, tmp
 208 +       ldr     \rp, =BCM53XX_UART1_PHYS        @ MMU off, Physical
 209 +       ldr     \rv, =BCM53XX_UART1_VIRT        @ MMU on, Virtual
 210 +       .endm
 211 +
 212 +#define UART_SHIFT     BCM53XX_UART1_SH
 213 +#include <asm/hardware/debug-8250.S>
 214 --- /dev/null
 215 +++ b/arch/arm/mach-bcm53xx/Kconfig
 216 @@ -0,0 +1,15 @@
 217 +config ARCH_BCM53XX
 218 +       bool "Broadcom BCM47XX / BCM53XX ARM SoC"
 219 +       select CPU_V7
 220 +       select ARM_GIC
 221 +       select HAVE_ARM_SCU if SMP
 222 +       select HAVE_ARM_TWD if LOCAL_TIMERS
 223 +       select HAVE_SMP
 224 +       select HAVE_CLK
 225 +       select LOCAL_TIMERS if SMP
 226 +       select GENERIC_TIME
 227 +       select GENERIC_CLOCKEVENTS_BUILD
 228 +       select GENERIC_CLOCKEVENTS
 229 +       select ARM_GLOBAL_TIMER
 230 +       help
 231 +         Support for Broadcom BCM47XX and BCM53XX SoCs with ARM CPU cores.
 232 --- /dev/null
 233 +++ b/arch/arm/mach-bcm53xx/Makefile
 234 @@ -0,0 +1 @@
 235 +obj-y += bcm53xx.o
 236 --- /dev/null
 237 +++ b/arch/arm/mach-bcm53xx/bcm53xx.c
 238 @@ -0,0 +1,69 @@
 239 +/*
 240 + * Broadcom BCM47XX / BCM53XX ARM platform code.
 241 + *
 242 + * Copyright 2013 Hauke Mehrtens <hauke@hauke-m.de>
 243 + *
 244 + * Licensed under the GNU/GPL. See COPYING for details.
 245 + */
 246 +#include <linux/of_address.h>
 247 +#include <linux/of_platform.h>
 248 +#include <linux/irqchip.h>
 249 +#include <linux/clocksource.h>
 250 +#include <linux/clk-provider.h>
 251 +
 252 +#include <asm/mach/arch.h>
 253 +#include <asm/mach/map.h>
 254 +#include <asm/smp_scu.h>
 255 +#include <asm/signal.h>
 256 +
 257 +static int bcm53xx_abort_handler(unsigned long addr, unsigned int fsr,
 258 +                                struct pt_regs *regs)
 259 +{
 260 +       /*
 261 +        * These happen for no good reason
 262 +        * possibly left over from CFE
 263 +        */
 264 +       pr_warn("External imprecise Data abort at addr=%#lx, fsr=%#x ignored.\n",
 265 +               addr, fsr);
 266 +
 267 +       /* Returning non-zero causes fault display and panic */
 268 +       return 0;
 269 +}
 270 +
 271 +static void bcm53xx_aborts_enable(void)
 272 +{
 273 +       /* Install our hook */
 274 +       hook_fault_code(16 + 6, bcm53xx_abort_handler, SIGBUS, 0,
 275 +                       "imprecise external abort");
 276 +}
 277 +
 278 +static void __init bcm53xx_timer_init(void)
 279 +{
 280 +       of_clk_init(NULL);
 281 +       clocksource_of_init();
 282 +}
 283 +
 284 +void __init bcm53xx_map_io(void)
 285 +{
 286 +       debug_ll_io_init();
 287 +       bcm53xx_aborts_enable();
 288 +}
 289 +
 290 +static void __init bcm53xx_dt_init(void)
 291 +{
 292 +       of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
 293 +}
 294 +
 295 +static const char const *bcm53xx_dt_compat[] = {
 296 +       "brcm,bcm5301",
 297 +       "netgear,r6250v1",
 298 +       NULL,
 299 +};
 300 +
 301 +DT_MACHINE_START(BCM53XX, "BCM53XX")
 302 +       .init_machine = bcm53xx_dt_init,
 303 +       .map_io = bcm53xx_map_io,
 304 +       .init_irq = irqchip_init,
 305 +       .init_time = bcm53xx_timer_init,
 306 +       .dt_compat = bcm53xx_dt_compat,
 307 +MACHINE_END