target/linux/bcm53xx/patches-3.10/051-bcm53xx-initial-support-for-the-BCM5301-BCM470X-SoC-.patch

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