From: Hanjun Guo <hanjun.guo@linaro.org> To: "Rafael J. Wysocki" <rjw@rjwysocki.net>, Catalin Marinas <catalin.marinas@arm.com>, linux-arm-kernel@lists.infradead.org, linux-acpi@vger.kernel.org Cc: linux-kernel@vger.kernel.org, Arnd Bergmann <arnd@arndb.de>, Bjorn Helgaas <bhelgaas@google.com>, rric@kernel.org, Grant Likely <grant.likely@linaro.org>, Sudeep Holla <Sudeep.Holla@arm.com>, Mark Rutland <mark.rutland@arm.com>, Charles.Garcia-Tobin@arm.com, lorenzo.pieralisi@arm.com, linaro-acpi@lists.linaro.org, Al Stone <al.stone@linaro.org>, Graeme Gregory <graeme.gregory@linaro.org>, Hanjun Guo <hanjun.guo@linaro.org> Subject: [PATCH v4 06/13] ARM64 / ACPI: Introduce early_param for "acpi" Date: Fri, 27 Jun 2014 11:49:29 +0800 [thread overview] Message-ID: <1403840976-7456-7-git-send-email-hanjun.guo@linaro.org> (raw) In-Reply-To: <1403840976-7456-1-git-send-email-hanjun.guo@linaro.org> From: Al Stone <al.stone@linaro.org> Introduce two early parameters for "acpi", one is the parameter to disable ACPI on ARM64 and another one is acpi=strict to disable out-of-spec workarounds. Reviewed-by: Grant Likely <grant.likely@linaro.org> Signed-off-by: Al Stone <al.stone@linaro.org> Signed-off-by: Graeme Gregory <graeme.gregory@linaro.org> Signed-off-by: Hanjun Guo <hanjun.guo@linaro.org> --- Documentation/kernel-parameters.txt | 3 ++- drivers/acpi/plat/arm-core.c | 21 +++++++++++++++++++++ 2 files changed, 23 insertions(+), 1 deletion(-) diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt index 8849049..b7e9fc0 100644 --- a/Documentation/kernel-parameters.txt +++ b/Documentation/kernel-parameters.txt @@ -165,7 +165,7 @@ multipliers 'Kilo', 'Mega', and 'Giga', equalling 2^10, 2^20, and 2^30 bytes respectively. Such letter suffixes can also be entirely omitted. - acpi= [HW,ACPI,X86] + acpi= [HW,ACPI,X86,ARM] Advanced Configuration and Power Interface Format: { force | off | strict | noirq | rsdt } force -- enable ACPI if default was off @@ -175,6 +175,7 @@ bytes respectively. Such letter suffixes can also be entirely omitted. strictly ACPI specification compliant. rsdt -- prefer RSDT over (default) XSDT copy_dsdt -- copy DSDT to memory + For ARM64, ONLY "off" and "strict" are available. See also Documentation/power/runtime_pm.txt, pci=noacpi diff --git a/drivers/acpi/plat/arm-core.c b/drivers/acpi/plat/arm-core.c index c6c7e03..cf46c25 100644 --- a/drivers/acpi/plat/arm-core.c +++ b/drivers/acpi/plat/arm-core.c @@ -108,3 +108,24 @@ void __init acpi_boot_table_init(void) return; } } + +static int __init parse_acpi(char *arg) +{ + if (!arg) + return -EINVAL; + + /* "acpi=off" disables both ACPI table parsing and interpreter */ + if (strcmp(arg, "off") == 0) { + disable_acpi(); + } + /* acpi=strict disables out-of-spec workarounds */ + else if (strcmp(arg, "strict") == 0) { + acpi_strict = 1; + } else { + /* Core will printk when we return error */ + return -EINVAL; + } + + return 0; +} +early_param("acpi", parse_acpi); -- 1.7.9.5
WARNING: multiple messages have this Message-ID (diff)
From: hanjun.guo@linaro.org (Hanjun Guo) To: linux-arm-kernel@lists.infradead.org Subject: [PATCH v4 06/13] ARM64 / ACPI: Introduce early_param for "acpi" Date: Fri, 27 Jun 2014 11:49:29 +0800 [thread overview] Message-ID: <1403840976-7456-7-git-send-email-hanjun.guo@linaro.org> (raw) In-Reply-To: <1403840976-7456-1-git-send-email-hanjun.guo@linaro.org> From: Al Stone <al.stone@linaro.org> Introduce two early parameters for "acpi", one is the parameter to disable ACPI on ARM64 and another one is acpi=strict to disable out-of-spec workarounds. Reviewed-by: Grant Likely <grant.likely@linaro.org> Signed-off-by: Al Stone <al.stone@linaro.org> Signed-off-by: Graeme Gregory <graeme.gregory@linaro.org> Signed-off-by: Hanjun Guo <hanjun.guo@linaro.org> --- Documentation/kernel-parameters.txt | 3 ++- drivers/acpi/plat/arm-core.c | 21 +++++++++++++++++++++ 2 files changed, 23 insertions(+), 1 deletion(-) diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt index 8849049..b7e9fc0 100644 --- a/Documentation/kernel-parameters.txt +++ b/Documentation/kernel-parameters.txt @@ -165,7 +165,7 @@ multipliers 'Kilo', 'Mega', and 'Giga', equalling 2^10, 2^20, and 2^30 bytes respectively. Such letter suffixes can also be entirely omitted. - acpi= [HW,ACPI,X86] + acpi= [HW,ACPI,X86,ARM] Advanced Configuration and Power Interface Format: { force | off | strict | noirq | rsdt } force -- enable ACPI if default was off @@ -175,6 +175,7 @@ bytes respectively. Such letter suffixes can also be entirely omitted. strictly ACPI specification compliant. rsdt -- prefer RSDT over (default) XSDT copy_dsdt -- copy DSDT to memory + For ARM64, ONLY "off" and "strict" are available. See also Documentation/power/runtime_pm.txt, pci=noacpi diff --git a/drivers/acpi/plat/arm-core.c b/drivers/acpi/plat/arm-core.c index c6c7e03..cf46c25 100644 --- a/drivers/acpi/plat/arm-core.c +++ b/drivers/acpi/plat/arm-core.c @@ -108,3 +108,24 @@ void __init acpi_boot_table_init(void) return; } } + +static int __init parse_acpi(char *arg) +{ + if (!arg) + return -EINVAL; + + /* "acpi=off" disables both ACPI table parsing and interpreter */ + if (strcmp(arg, "off") == 0) { + disable_acpi(); + } + /* acpi=strict disables out-of-spec workarounds */ + else if (strcmp(arg, "strict") == 0) { + acpi_strict = 1; + } else { + /* Core will printk when we return error */ + return -EINVAL; + } + + return 0; +} +early_param("acpi", parse_acpi); -- 1.7.9.5
next prev parent reply other threads:[~2014-06-27 3:49 UTC|newest] Thread overview: 56+ messages / expand[flat|nested] mbox.gz Atom feed top 2014-06-27 3:49 [PATCH v4 00/13] Enable ACPI on ARM64 in Kconfig Hanjun Guo 2014-06-27 3:49 ` Hanjun Guo 2014-06-27 3:49 ` [PATCH v4 01/13] acpi: arm64 does not have a BIOS add config for BIOS table scan Hanjun Guo 2014-06-27 3:49 ` Hanjun Guo 2014-06-27 3:49 ` [PATCH v4 02/13] ACPI: Don't use acpi_lapic in ACPI core code Hanjun Guo 2014-06-27 3:49 ` Hanjun Guo 2014-06-27 3:49 ` [PATCH v4 03/13] ACPI / processor: Introduce ARCH_HAS_ACPI_PDC Hanjun Guo 2014-06-27 3:49 ` Hanjun Guo 2014-06-27 3:49 ` [PATCH v4 04/13] ARM64 : Add dummy asm/cpu.h Hanjun Guo 2014-06-27 3:49 ` Hanjun Guo 2014-06-27 3:49 ` [PATCH v4 05/13] ARM64 / ACPI: Introduce arm-core.c and its related head file Hanjun Guo 2014-06-27 3:49 ` Hanjun Guo 2014-06-30 16:24 ` Catalin Marinas 2014-06-30 16:24 ` Catalin Marinas 2014-06-30 16:24 ` Catalin Marinas 2014-06-30 17:21 ` Graeme Gregory 2014-06-30 17:21 ` Graeme Gregory 2014-06-30 17:21 ` Graeme Gregory 2014-06-27 3:49 ` Hanjun Guo [this message] 2014-06-27 3:49 ` [PATCH v4 06/13] ARM64 / ACPI: Introduce early_param for "acpi" Hanjun Guo 2014-06-27 9:07 ` Arnd Bergmann 2014-06-27 9:07 ` Arnd Bergmann 2014-06-27 10:57 ` Graeme Gregory 2014-06-27 10:57 ` Graeme Gregory 2014-06-27 10:57 ` Graeme Gregory 2014-06-27 3:49 ` [PATCH v4 07/13] ARM64 / ACPI: Introduce lowlevel suspend function Hanjun Guo 2014-06-27 3:49 ` Hanjun Guo 2014-06-30 16:28 ` Catalin Marinas 2014-06-30 16:28 ` Catalin Marinas 2014-06-30 16:28 ` Catalin Marinas 2014-06-27 3:49 ` [PATCH v4 08/13] ARM64 / ACPI: Introduce arch_fix_phys_package_id() for cpu topology Hanjun Guo 2014-06-27 3:49 ` Hanjun Guo 2014-06-27 3:49 ` [PATCH v4 09/13] ARM64 / ACPI: Introduce PCI functions for ACPI on ARM64 Hanjun Guo 2014-06-27 3:49 ` Hanjun Guo 2014-06-27 3:49 ` [PATCH v4 10/13] ACPI: Make EC debugfs depend on X86 || IA64 in Kconfig Hanjun Guo 2014-06-27 3:49 ` Hanjun Guo 2014-06-27 3:49 ` [PATCH v4 11/13] ARM64 / ACPI: Select ACPI_REDUCED_HARDWARE_ONLY if ACPI is enabled on ARM64 Hanjun Guo 2014-06-27 3:49 ` Hanjun Guo 2014-06-27 3:49 ` [PATCH v4 12/13] ARM64 / ACPI: if we chose to boot from acpi then disable FDT Hanjun Guo 2014-06-27 3:49 ` Hanjun Guo 2014-06-27 9:09 ` [Linaro-acpi] " Arnd Bergmann 2014-06-27 9:09 ` Arnd Bergmann 2014-06-27 3:49 ` [PATCH v4 13/13] ARM64 / ACPI: Enable ARM64 in Kconfig Hanjun Guo 2014-06-27 3:49 ` Hanjun Guo 2014-06-30 10:46 ` Catalin Marinas 2014-06-30 10:46 ` Catalin Marinas 2014-06-30 10:46 ` Catalin Marinas 2014-07-01 7:54 ` Hanjun Guo 2014-07-01 7:54 ` Hanjun Guo 2014-07-01 7:54 ` Hanjun Guo 2014-07-01 8:20 ` Hanjun Guo 2014-07-01 8:20 ` Hanjun Guo 2014-07-01 8:20 ` Hanjun Guo 2014-07-01 9:22 ` Catalin Marinas 2014-07-01 9:22 ` Catalin Marinas 2014-07-01 9:22 ` Catalin Marinas
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