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_BCM_5301X
  46 +               bool "Kernel low-level debugging on BCM53XX UART1"
  47 +               depends on ARCH_BCM_5301X
  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_BCM_5301X
  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-$(CONFIG_ARCH_BCM_5301X)               += bcm53xx
  67  machine-$(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_BCM_5301X) += bcm4708-netgear-r6250.dtb
  77
  78  targets += dtbs
  79  targets += $(dtb-y)
  80 --- /dev/null
  81 +++ b/arch/arm/boot/dts/bcm4708-netgear-r6250.dts
  82 @@ -0,0 +1,20 @@
  83 +/*
  84 + * Broadcom BCM470X / BCM5301X 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 "bcm4708.dtsi"
  94 +
  95 +/ {
  96 +       compatible = "netgear,r6250v1", "broadcom,bcm4708";
  97 +       model = "Netgear R6250 V1 (BCM4708)";
  98 +
  99 +       memory {
 100 +               reg = <0x00000000 0x08000000>;
 101 +       };
 102 +};
 103 --- /dev/null
 104 +++ b/arch/arm/boot/dts/bcm4708.dtsi
 105 @@ -0,0 +1,100 @@
 106 +/*
 107 + * Broadcom BCM470X / BCM5301X 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 <dt-bindings/interrupt-controller/arm-gic.h>
 115 +#include <dt-bindings/interrupt-controller/irq.h>
 116 +
 117 +#include "skeleton.dtsi"
 118 +
 119 +/ {
 120 +       compatible = "broadcom,bcm4708";
 121 +       model = "Broadcom BCM4708";
 122 +       interrupt-parent = <&gic>;
 123 +
 124 +       chosen {
 125 +               bootargs = "console=ttyS0,115200 debug earlyprintk";
 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 +                       next-level-cache = <&L2>;
 136 +                       reg = <0>;
 137 +               };
 138 +               cpu@1 {
 139 +                       device_type = "cpu";
 140 +                       compatible = "arm,cortex-a9";
 141 +                       next-level-cache = <&L2>;
 142 +                       reg = <1>;
 143 +               };
 144 +       };
 145 +
 146 +       clocks {
 147 +               #address-cells = <1>;
 148 +               #size-cells = <0>;
 149 +
 150 +               clk_periph: periph {
 151 +                       compatible = "fixed-clock";
 152 +                       #clock-cells = <0>;
 153 +                       clock-frequency = <400000000>;
 154 +               };
 155 +       };
 156 +
 157 +       uart@18000300 {
 158 +               compatible = "ns16550";
 159 +               reg = <0x18000300 0x100>;
 160 +               interrupts = <GIC_SPI 85 IRQ_TYPE_LEVEL_HIGH>;
 161 +               clock-frequency = <100000000>;
 162 +       };
 163 +
 164 +       uart@18000400 {
 165 +               compatible = "ns16550";
 166 +               reg = <0x18000400 0x100>;
 167 +               interrupts = <GIC_SPI 85 IRQ_TYPE_LEVEL_HIGH>;
 168 +               clock-frequency = <100000000>;
 169 +       };
 170 +
 171 +       gic: interrupt-controller@19021000 {
 172 +               compatible = "arm,cortex-a9-gic";
 173 +               #interrupt-cells = <3>;
 174 +               #address-cells = <0>;
 175 +               interrupt-controller;
 176 +               reg = <0x19021000 0x1000>,
 177 +                     <0x19020100 0x100>;
 178 +       };
 179 +
 180 +       timer@19020200 {
 181 +               compatible = "arm,cortex-a9-global-timer";
 182 +               reg = <0x19020200 0x100>;
 183 +               interrupts = <GIC_PPI 11 IRQ_TYPE_LEVEL_HIGH>;
 184 +               clocks = <&clk_periph>;
 185 +       };
 186 +
 187 +       local-timer@19020600 {
 188 +               compatible = "arm,cortex-a9-twd-timer";
 189 +               reg = <0x19020600 0x100>;
 190 +               interrupts = <GIC_PPI 13 IRQ_TYPE_LEVEL_HIGH>;
 191 +               clocks = <&clk_periph>;
 192 +       };
 193 +
 194 +       L2: cache-controller@19022000 {
 195 +               compatible = "arm,pl310-cache";
 196 +               reg = <0x19022000 0x1000>;
 197 +               cache-unified;
 198 +               cache-level = <2>;
 199 +       };
 200 +
 201 +       scu@19020000 {
 202 +               compatible = "arm,cortex-a9-scu";
 203 +               reg = <0x19020000 0x100>;
 204 +       };
 205 +};
 206 --- /dev/null
 207 +++ b/arch/arm/include/debug/bcm53xx.S
 208 @@ -0,0 +1,19 @@
 209 +/*
 210 + * Macros used for EARLY_PRINTK, in low-level UART debug console
 211 + *
 212 + * Copyright 2013 Hauke Mehrtens <hauke@hauke-m.de>
 213 + *
 214 + * Licensed under the GNU/GPL. See COPYING for details.
 215 + */
 216 +
 217 +#define BCM53XX_UART1_PHYS     0x18000300
 218 +#define BCM53XX_UART1_VIRT     0xf1000300
 219 +#define BCM53XX_UART1_SH       0
 220 +
 221 +       .macro  addruart, rp, rv, tmp
 222 +       ldr     \rp, =BCM53XX_UART1_PHYS        @ MMU off, Physical
 223 +       ldr     \rv, =BCM53XX_UART1_VIRT        @ MMU on, Virtual
 224 +       .endm
 225 +
 226 +#define UART_SHIFT     BCM53XX_UART1_SH
 227 +#include <asm/hardware/debug-8250.S>
 228 --- /dev/null
 229 +++ b/arch/arm/mach-bcm53xx/Kconfig
 230 @@ -0,0 +1,26 @@
 231 +config ARCH_BCM_5301X
 232 +       bool "Broadcom BCM470X / BCM5301X ARM SoC" if ARCH_MULTI_V7
 233 +       depends on MMU
 234 +       select ARM_GIC
 235 +       select CACHE_L2X0
 236 +       select HAVE_ARM_SCU if SMP
 237 +       select HAVE_ARM_TWD if SMP
 238 +       select HAVE_SMP
 239 +       select COMMON_CLK
 240 +       select GENERIC_CLOCKEVENTS
 241 +       select GENERIC_TIME
 242 +       select ARM_GLOBAL_TIMER
 243 +       select CLKSRC_ARM_GLOBAL_TIMER_SCHED_CLOCK
 244 +       select MIGHT_HAVE_PCI
 245 +       help
 246 +         Support for Broadcom BCM470X and BCM5301X SoCs with ARM CPU cores.
 247 +
 248 +         This is a network SoC line mostly used in home routers and
 249 +         wifi access points.
 250 +         This inclused the following SoC: BCM53010, BCM53011, BCM53012,
 251 +         BCM53014, BCM53015, BCM53016, BCM53017, BCM53018, BCM4707,
 252 +         BCM4708 and BCM4709.
 253 +
 254 +         Do not confuse this with the BCM4760 which is a totally
 255 +         different SoC or with the older BCM47XX and BCM53XX based
 256 +         network SoC using a MIPS CPU, they are supported by arch/mips/bcm47xx
 257 --- /dev/null
 258 +++ b/arch/arm/mach-bcm53xx/Makefile
 259 @@ -0,0 +1 @@
 260 +obj-y += bcm53xx.o
 261 --- /dev/null
 262 +++ b/arch/arm/mach-bcm53xx/bcm53xx.c
 263 @@ -0,0 +1,60 @@
 264 +/*
 265 + * Broadcom BCM470X / BCM5301X ARM platform code.
 266 + *
 267 + * Copyright 2013 Hauke Mehrtens <hauke@hauke-m.de>
 268 + *
 269 + * Licensed under the GNU/GPL. See COPYING for details.
 270 + */
 271 +#include <linux/of_address.h>
 272 +#include <linux/of_platform.h>
 273 +#include <linux/clocksource.h>
 274 +#include <linux/clk-provider.h>
 275 +#include <asm/hardware/cache-l2x0.h>
 276 +
 277 +#include <asm/mach/arch.h>
 278 +#include <asm/mach/map.h>
 279 +#include <asm/signal.h>
 280 +
 281 +static int bcm5301x_abort_handler(unsigned long addr, unsigned int fsr,
 282 +                                struct pt_regs *regs)
 283 +{
 284 +       /*
 285 +        * These happen for no good reason, possibly left over from CFE
 286 +        */
 287 +       pr_warn("External imprecise Data abort at addr=%#lx, fsr=%#x ignored.\n",
 288 +               addr, fsr);
 289 +
 290 +       /* Returning non-zero causes fault display and panic */
 291 +       return 0;
 292 +}
 293 +
 294 +static void __init bcm5301x_init_early(void)
 295 +{
 296 +       /* Install our hook */
 297 +       hook_fault_code(16 + 6, bcm5301x_abort_handler, SIGBUS, 0,
 298 +                       "imprecise external abort");
 299 +}
 300 +
 301 +static void __init bcm5301x_timer_init(void)
 302 +{
 303 +       of_clk_init(NULL);
 304 +       clocksource_of_init();
 305 +}
 306 +
 307 +static void __init bcm5301x_dt_init(void)
 308 +{
 309 +       l2x0_of_init(0, ~0UL);
 310 +       of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
 311 +}
 312 +
 313 +static const char __initconst *bcm5301x_dt_compat[] = {
 314 +       "broadcom,bcm4708",
 315 +       NULL,
 316 +};
 317 +
 318 +DT_MACHINE_START(BCM5301X, "BCM5301X")
 319 +       .init_early     = bcm5301x_init_early,
 320 +       .init_time      = bcm5301x_timer_init,
 321 +       .init_machine   = bcm5301x_dt_init,
 322 +       .dt_compat      = bcm5301x_dt_compat,
 323 +MACHINE_END