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ARC udpates for 4.14-rc4

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- Updates for various platforms
 
  - boot log updates for upcoming HS48 family of cores (dual issue)
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Merge tag 'arc-4.14-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc

Pull ARC udpates from Vineet Gupta:

 - updates for various platforms

 - boot log updates for upcoming HS48 family of cores (dual issue)

* tag 'arc-4.14-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc:
  ARC: [plat-hsdk]: Add reset controller node to manage ethernet reset
  ARC: [plat-hsdk]: Temporary fix to set CPU frequency to 1GHz
  ARC: fix allnoconfig build warning
  ARCv2: boot log: identify HS48 cores (dual issue)
  ARC: boot log: decontaminate ARCv2 ISA_CONFIG register
  arc: remove redundant UTS_MACHINE define in arch/arc/Makefile
  ARC: [plat-eznps] Update platform maintainer as Noam left
  ARC: [plat-hsdk] use actual clk driver to manage cpu clk
  ARC: [*defconfig] Reenable soft lock-up detector
  ARC: [plat-axs10x] sdio: Temporary fix of sdio ciu frequency
  ARC: [plat-hsdk] sdio: Temporary fix of sdio ciu frequency
  ARC: [plat-axs103] Add temporary quirk to reset ethernet IP
This commit is contained in:
Linus Torvalds 2017-10-06 15:57:08 -07:00
commit ed0f72f4ea
17 changed files with 130 additions and 28 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
MAINTAINERS
View File

@ -5259,7 +5259,8 @@ S: Maintained
F: drivers/iommu/exynos-iommu.c
EZchip NPS platform support
M: Noam Camus <noamc@ezchip.com>
M: Elad Kanfi <eladkan@mellanox.com>
M: Vineet Gupta <vgupta@synopsys.com>
S: Supported
F: arch/arc/plat-eznps
F: arch/arc/boot/dts/eznps.dts

2
arch/arc/Kconfig
View File

@ -24,7 +24,7 @@ config ARC
select GENERIC_SMP_IDLE_THREAD
select HAVE_ARCH_KGDB
select HAVE_ARCH_TRACEHOOK
select HAVE_FUTEX_CMPXCHG
select HAVE_FUTEX_CMPXCHG if FUTEX
select HAVE_IOREMAP_PROT
select HAVE_KPROBES
select HAVE_KRETPROBES

2
arch/arc/Makefile
View File

@ -6,8 +6,6 @@
# published by the Free Software Foundation.
#
UTS_MACHINE := arc
ifeq ($(CROSS_COMPILE),)
ifndef CONFIG_CPU_BIG_ENDIAN
CROSS_COMPILE := arc-linux-

9
arch/arc/boot/dts/axs10x_mb.dtsi
View File

@ -44,7 +44,14 @@
mmcclk: mmcclk {
compatible = "fixed-clock";
clock-frequency = <50000000>;
/*
* DW sdio controller has external ciu clock divider
* controlled via register in SDIO IP. It divides
* sdio_ref_clk (which comes from CGU) by 16 for
* default. So default mmcclk clock (which comes
* to sdk_in) is 25000000 Hz.
*/
clock-frequency = <25000000>;
#clock-cells = <0>;
};

32
arch/arc/boot/dts/hsdk.dts
View File

@ -12,6 +12,7 @@
/dts-v1/;
#include <dt-bindings/net/ti-dp83867.h>
#include <dt-bindings/reset/snps,hsdk-reset.h>
/ {
model = "snps,hsdk";
@ -57,10 +58,10 @@
};
};
core_clk: core-clk {
input_clk: input-clk {
#clock-cells = <0>;
compatible = "fixed-clock";
clock-frequency = <500000000>;
clock-frequency = <33333333>;
};
cpu_intc: cpu-interrupt-controller {
@ -102,6 +103,19 @@
ranges = <0x00000000 0xf0000000 0x10000000>;
cgu_rst: reset-controller@8a0 {
compatible = "snps,hsdk-reset";
#reset-cells = <1>;
reg = <0x8A0 0x4>, <0xFF0 0x4>;
};
core_clk: core-clk@0 {
compatible = "snps,hsdk-core-pll-clock";
reg = <0x00 0x10>, <0x14B8 0x4>;
#clock-cells = <0>;
clocks = <&input_clk>;
};
serial: serial@5000 {
compatible = "snps,dw-apb-uart";
reg = <0x5000 0x100>;
@ -120,7 +134,17 @@
mmcclk_ciu: mmcclk-ciu {
compatible = "fixed-clock";
clock-frequency = <100000000>;
/*
* DW sdio controller has external ciu clock divider
* controlled via register in SDIO IP. Due to its
* unexpected default value (it should devide by 1
* but it devides by 8) SDIO IP uses wrong clock and
* works unstable (see STAR 9001204800)
* So add temporary fix and change clock frequency
* from 100000000 to 12500000 Hz until we fix dw sdio
* driver itself.
*/
clock-frequency = <12500000>;
#clock-cells = <0>;
};
@ -141,6 +165,8 @@
clocks = <&gmacclk>;
clock-names = "stmmaceth";
phy-handle = <&phy0>;
resets = <&cgu_rst HSDK_ETH_RESET>;
reset-names = "stmmaceth";
mdio {
#address-cells = <1>;

2
arch/arc/configs/axs101_defconfig
View File

@ -105,7 +105,7 @@ CONFIG_NLS_ISO8859_1=y
# CONFIG_ENABLE_WARN_DEPRECATED is not set
# CONFIG_ENABLE_MUST_CHECK is not set
CONFIG_STRIP_ASM_SYMS=y
CONFIG_LOCKUP_DETECTOR=y
CONFIG_SOFTLOCKUP_DETECTOR=y
CONFIG_DEFAULT_HUNG_TASK_TIMEOUT=10
# CONFIG_SCHED_DEBUG is not set
# CONFIG_DEBUG_PREEMPT is not set

2
arch/arc/configs/axs103_defconfig
View File

@ -104,7 +104,7 @@ CONFIG_NLS_ISO8859_1=y
# CONFIG_ENABLE_WARN_DEPRECATED is not set
# CONFIG_ENABLE_MUST_CHECK is not set
CONFIG_STRIP_ASM_SYMS=y
CONFIG_LOCKUP_DETECTOR=y
CONFIG_SOFTLOCKUP_DETECTOR=y
CONFIG_DEFAULT_HUNG_TASK_TIMEOUT=10
# CONFIG_SCHED_DEBUG is not set
# CONFIG_DEBUG_PREEMPT is not set

2
arch/arc/configs/axs103_smp_defconfig
View File

@ -107,7 +107,7 @@ CONFIG_NLS_ISO8859_1=y
# CONFIG_ENABLE_WARN_DEPRECATED is not set
# CONFIG_ENABLE_MUST_CHECK is not set
CONFIG_STRIP_ASM_SYMS=y
CONFIG_LOCKUP_DETECTOR=y
CONFIG_SOFTLOCKUP_DETECTOR=y
CONFIG_DEFAULT_HUNG_TASK_TIMEOUT=10
# CONFIG_SCHED_DEBUG is not set
# CONFIG_DEBUG_PREEMPT is not set

2
arch/arc/configs/haps_hs_smp_defconfig
View File

@ -84,5 +84,5 @@ CONFIG_TMPFS=y
CONFIG_NFS_FS=y
# CONFIG_ENABLE_WARN_DEPRECATED is not set
# CONFIG_ENABLE_MUST_CHECK is not set
CONFIG_LOCKUP_DETECTOR=y
CONFIG_SOFTLOCKUP_DETECTOR=y
# CONFIG_DEBUG_PREEMPT is not set

3
arch/arc/configs/hsdk_defconfig
View File

@ -63,6 +63,7 @@ CONFIG_MMC_SDHCI=y
CONFIG_MMC_SDHCI_PLTFM=y
CONFIG_MMC_DW=y
# CONFIG_IOMMU_SUPPORT is not set
CONFIG_RESET_HSDK=y
CONFIG_EXT3_FS=y
CONFIG_VFAT_FS=y
CONFIG_TMPFS=y
@ -72,7 +73,7 @@ CONFIG_NLS_ISO8859_1=y
# CONFIG_ENABLE_WARN_DEPRECATED is not set
# CONFIG_ENABLE_MUST_CHECK is not set
CONFIG_STRIP_ASM_SYMS=y
CONFIG_LOCKUP_DETECTOR=y
CONFIG_SOFTLOCKUP_DETECTOR=y
CONFIG_DEFAULT_HUNG_TASK_TIMEOUT=10
# CONFIG_SCHED_DEBUG is not set
# CONFIG_DEBUG_PREEMPT is not set

2
arch/arc/configs/vdk_hs38_defconfig
View File

@ -94,7 +94,7 @@ CONFIG_NLS_ISO8859_1=y
# CONFIG_ENABLE_MUST_CHECK is not set
CONFIG_STRIP_ASM_SYMS=y
CONFIG_DEBUG_SHIRQ=y
CONFIG_LOCKUP_DETECTOR=y
CONFIG_SOFTLOCKUP_DETECTOR=y
CONFIG_DEFAULT_HUNG_TASK_TIMEOUT=10
# CONFIG_SCHED_DEBUG is not set
# CONFIG_DEBUG_PREEMPT is not set

2
arch/arc/configs/vdk_hs38_smp_defconfig
View File

@ -98,7 +98,7 @@ CONFIG_NLS_ISO8859_1=y
# CONFIG_ENABLE_MUST_CHECK is not set
CONFIG_STRIP_ASM_SYMS=y
CONFIG_DEBUG_SHIRQ=y
CONFIG_LOCKUP_DETECTOR=y
CONFIG_SOFTLOCKUP_DETECTOR=y
CONFIG_DEFAULT_HUNG_TASK_TIMEOUT=10
# CONFIG_SCHED_DEBUG is not set
# CONFIG_DEBUG_PREEMPT is not set

11
arch/arc/include/asm/arcregs.h
View File

@ -98,6 +98,7 @@
/* Auxiliary registers */
#define AUX_IDENTITY 4
#define AUX_EXEC_CTRL 8
#define AUX_INTR_VEC_BASE 0x25
#define AUX_VOL 0x5e
@ -135,12 +136,12 @@ struct bcr_identity {
#endif
};
struct bcr_isa {
struct bcr_isa_arcv2 {
#ifdef CONFIG_CPU_BIG_ENDIAN
unsigned int div_rem:4, pad2:4, ldd:1, unalign:1, atomic:1, be:1,
pad1:11, atomic1:1, ver:8;
pad1:12, ver:8;
#else
unsigned int ver:8, atomic1:1, pad1:11, be:1, atomic:1, unalign:1,
unsigned int ver:8, pad1:12, be:1, atomic:1, unalign:1,
ldd:1, pad2:4, div_rem:4;
#endif
};
@ -263,13 +264,13 @@ struct cpuinfo_arc {
struct cpuinfo_arc_mmu mmu;
struct cpuinfo_arc_bpu bpu;
struct bcr_identity core;
struct bcr_isa isa;
struct bcr_isa_arcv2 isa;
const char *details, *name;
unsigned int vec_base;
struct cpuinfo_arc_ccm iccm, dccm;
struct {
unsigned int swap:1, norm:1, minmax:1, barrel:1, crc:1, swape:1, pad1:2,
fpu_sp:1, fpu_dp:1, pad2:6,
fpu_sp:1, fpu_dp:1, dual_iss_enb:1, dual_iss_exist:1, pad2:4,
debug:1, ap:1, smart:1, rtt:1, pad3:4,
timer0:1, timer1:1, rtc:1, gfrc:1, pad4:4;
} extn;

32
arch/arc/kernel/setup.c
View File

@ -51,6 +51,7 @@ static const struct id_to_str arc_cpu_rel[] = {
{ 0x51, "R2.0" },
{ 0x52, "R2.1" },
{ 0x53, "R3.0" },
{ 0x54, "R4.0" },
#endif
{ 0x00, NULL }
};
@ -62,6 +63,7 @@ static const struct id_to_str arc_cpu_nm[] = {
#else
{ 0x40, "ARC EM" },
{ 0x50, "ARC HS38" },
{ 0x54, "ARC HS48" },
#endif
{ 0x00, "Unknown" }
};
@ -119,11 +121,11 @@ static void read_arc_build_cfg_regs(void)
struct bcr_generic bcr;
struct cpuinfo_arc *cpu = &cpuinfo_arc700[smp_processor_id()];
const struct id_to_str *tbl;
struct bcr_isa_arcv2 isa;
FIX_PTR(cpu);
READ_BCR(AUX_IDENTITY, cpu->core);
READ_BCR(ARC_REG_ISA_CFG_BCR, cpu->isa);
for (tbl = &arc_cpu_rel[0]; tbl->id != 0; tbl++) {
if (cpu->core.family == tbl->id) {
@ -133,7 +135,7 @@ static void read_arc_build_cfg_regs(void)
}
for (tbl = &arc_cpu_nm[0]; tbl->id != 0; tbl++) {
if ((cpu->core.family & 0xF0) == tbl->id)
if ((cpu->core.family & 0xF4) == tbl->id)
break;
}
cpu->name = tbl->str;
@ -192,6 +194,14 @@ static void read_arc_build_cfg_regs(void)
cpu->bpu.full = bpu.ft;
cpu->bpu.num_cache = 256 << bpu.bce;
cpu->bpu.num_pred = 2048 << bpu.pte;
if (cpu->core.family >= 0x54) {
unsigned int exec_ctrl;
READ_BCR(AUX_EXEC_CTRL, exec_ctrl);
cpu->extn.dual_iss_exist = 1;
cpu->extn.dual_iss_enb = exec_ctrl & 1;
}
}
READ_BCR(ARC_REG_AP_BCR, bcr);
@ -205,18 +215,25 @@ static void read_arc_build_cfg_regs(void)
cpu->extn.debug = cpu->extn.ap | cpu->extn.smart | cpu->extn.rtt;
READ_BCR(ARC_REG_ISA_CFG_BCR, isa);
/* some hacks for lack of feature BCR info in old ARC700 cores */
if (is_isa_arcompact()) {
if (!cpu->isa.ver) /* ISA BCR absent, use Kconfig info */
if (!isa.ver) /* ISA BCR absent, use Kconfig info */
cpu->isa.atomic = IS_ENABLED(CONFIG_ARC_HAS_LLSC);
else
cpu->isa.atomic = cpu->isa.atomic1;
else {
/* ARC700_BUILD only has 2 bits of isa info */
struct bcr_generic bcr = *(struct bcr_generic *)&isa;
cpu->isa.atomic = bcr.info & 1;
}
cpu->isa.be = IS_ENABLED(CONFIG_CPU_BIG_ENDIAN);
/* there's no direct way to distinguish 750 vs. 770 */
if (unlikely(cpu->core.family < 0x34 || cpu->mmu.ver < 3))
cpu->name = "ARC750";
} else {
cpu->isa = isa;
}
}
@ -232,10 +249,11 @@ static char *arc_cpu_mumbojumbo(int cpu_id, char *buf, int len)
"\nIDENTITY\t: ARCVER [%#02x] ARCNUM [%#02x] CHIPID [%#4x]\n",
core->family, core->cpu_id, core->chip_id);
n += scnprintf(buf + n, len - n, "processor [%d]\t: %s %s (%s ISA) %s\n",
n += scnprintf(buf + n, len - n, "processor [%d]\t: %s %s (%s ISA) %s%s%s\n",
cpu_id, cpu->name, cpu->details,
is_isa_arcompact() ? "ARCompact" : "ARCv2",
IS_AVAIL1(cpu->isa.be, "[Big-Endian]"));
IS_AVAIL1(cpu->isa.be, "[Big-Endian]"),
IS_AVAIL3(cpu->extn.dual_iss_exist, cpu->extn.dual_iss_enb, " Dual-Issue"));
n += scnprintf(buf + n, len - n, "Timers\t\t: %s%s%s%s%s%s\nISA Extn\t: ",
IS_AVAIL1(cpu->extn.timer0, "Timer0 "),

7
arch/arc/plat-axs10x/axs10x.c
View File

@ -111,6 +111,13 @@ static void __init axs10x_early_init(void)
axs10x_enable_gpio_intc_wire();
/*
* Reset ethernet IP core.
* TODO: get rid of this quirk after axs10x reset driver (or simple
* reset driver) will be available in upstream.
*/
iowrite32((1 << 5), (void __iomem *) CREG_MB_SW_RESET);
scnprintf(mb, 32, "MainBoard v%d", mb_rev);
axs10x_print_board_ver(CREG_MB_VER, mb);
}

3
arch/arc/plat-hsdk/Kconfig
View File

@ -6,4 +6,5 @@
#
menuconfig ARC_SOC_HSDK
bool "ARC HS Development Kit SOC"
bool "ARC HS Development Kit SOC"
select CLK_HSDK

42
arch/arc/plat-hsdk/platform.c
View File

@ -38,6 +38,42 @@ static void __init hsdk_init_per_cpu(unsigned int cpu)
#define CREG_PAE (CREG_BASE + 0x180)
#define CREG_PAE_UPDATE (CREG_BASE + 0x194)
#define CREG_CORE_IF_CLK_DIV (CREG_BASE + 0x4B8)
#define CREG_CORE_IF_CLK_DIV_2 0x1
#define CGU_BASE ARC_PERIPHERAL_BASE
#define CGU_PLL_STATUS (ARC_PERIPHERAL_BASE + 0x4)
#define CGU_PLL_CTRL (ARC_PERIPHERAL_BASE + 0x0)
#define CGU_PLL_STATUS_LOCK BIT(0)
#define CGU_PLL_STATUS_ERR BIT(1)
#define CGU_PLL_CTRL_1GHZ 0x3A10
#define HSDK_PLL_LOCK_TIMEOUT 500
#define HSDK_PLL_LOCKED() \
!!(ioread32((void __iomem *) CGU_PLL_STATUS) & CGU_PLL_STATUS_LOCK)
#define HSDK_PLL_ERR() \
!!(ioread32((void __iomem *) CGU_PLL_STATUS) & CGU_PLL_STATUS_ERR)
static void __init hsdk_set_cpu_freq_1ghz(void)
{
u32 timeout = HSDK_PLL_LOCK_TIMEOUT;
/*
* As we set cpu clock which exceeds 500MHz, the divider for the interface
* clock must be programmed to div-by-2.
*/
iowrite32(CREG_CORE_IF_CLK_DIV_2, (void __iomem *) CREG_CORE_IF_CLK_DIV);
/* Set cpu clock to 1GHz */
iowrite32(CGU_PLL_CTRL_1GHZ, (void __iomem *) CGU_PLL_CTRL);
while (!HSDK_PLL_LOCKED() && timeout--)
cpu_relax();
if (!HSDK_PLL_LOCKED() || HSDK_PLL_ERR())
pr_err("Failed to setup CPU frequency to 1GHz!");
}
static void __init hsdk_init_early(void)
{
/*
@ -52,6 +88,12 @@ static void __init hsdk_init_early(void)
/* Really apply settings made above */
writel(1, (void __iomem *) CREG_PAE_UPDATE);
/*
* Setup CPU frequency to 1GHz.
* TODO: remove it after smart hsdk pll driver will be introduced.
*/
hsdk_set_cpu_freq_1ghz();
}
static const char *hsdk_compat[] __initconst = {