From: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
To: "H. Peter Anvin" <hpa@zytor.com>,
x86@kernel.org, Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
linux-kernel@vger.kernel.org
Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Subject: [PATCH v2 0/7] x86/boot: Enable earlyprintk for HS UARTs
Date: Tue, 19 Mar 2019 21:43:18 +0300 [thread overview]
Message-ID: <20190319184325.72807-1-andriy.shevchenko@linux.intel.com> (raw)
Newer Intel platforms sometimes have only HS UART enabled and
accessible via MMIO on high addresses.
For now, earlyprintk doesn't handle such cases and always rely
on the legacy serial port to be present.
This series fills the gap and enables earlyprintk on HS UARTs.
Since v2:
- rebase on top of v5.1-rc1
- parse 'mmio' keyword instead of port range check (Ingo)
- deduplicate code wherever it's possible (Ingo)
Andy Shevchenko (7):
x86/boot: Convert early_serial_base to unsigned long
x86/boot: Introduce helpers for serial I/O
x86/boot: Split out parse_serial_port() helper for earlyprintk
x86/boot: Allow longer parameter list for earlyprintk
x86/boot: Add MMIO byte accessors
x86/boot: Introduce MMIO accessors and their support in earlyprintk
x86/boot: Support nocfg parameter for earlyprintk
arch/x86/boot/boot.h | 16 ++-
.../boot/compressed/early_serial_console.c | 5 +-
arch/x86/boot/compressed/misc.c | 4 +-
arch/x86/boot/compressed/misc.h | 8 +-
arch/x86/boot/early_serial_console.c | 135 ++++++++++++++----
arch/x86/boot/tty.c | 9 +-
6 files changed, 140 insertions(+), 37 deletions(-)
--
2.20.1
next reply other threads:[~2019-03-19 18:43 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-03-19 18:43 Andy Shevchenko [this message]
2019-03-19 18:43 ` [PATCH v2 1/7] x86/boot: Convert early_serial_base to unsigned long Andy Shevchenko
2019-03-28 8:28 ` Borislav Petkov
2019-03-28 9:09 ` Andy Shevchenko
2019-03-28 10:54 ` Borislav Petkov
2019-03-19 18:43 ` [PATCH v2 2/7] x86/boot: Introduce helpers for serial I/O Andy Shevchenko
2019-03-28 12:32 ` Borislav Petkov
2019-03-28 13:11 ` Andy Shevchenko
2019-03-28 13:28 ` Borislav Petkov
2019-03-28 13:52 ` Andy Shevchenko
2019-03-28 14:05 ` Borislav Petkov
2019-03-28 14:20 ` Andy Shevchenko
2019-03-28 14:34 ` Borislav Petkov
2019-03-28 14:51 ` Andy Shevchenko
2019-03-19 18:43 ` [PATCH v2 3/7] x86/boot: Split out parse_serial_port() helper for earlyprintk Andy Shevchenko
2019-03-28 12:35 ` Borislav Petkov
2019-03-28 13:15 ` Andy Shevchenko
2019-03-28 13:39 ` Borislav Petkov
2019-03-28 13:50 ` Andy Shevchenko
2019-03-28 14:03 ` Borislav Petkov
2019-03-28 14:23 ` Andy Shevchenko
2019-03-28 14:35 ` Borislav Petkov
2019-03-28 14:49 ` Andy Shevchenko
2019-03-19 18:43 ` [PATCH v2 4/7] x86/boot: Allow longer parameter list " Andy Shevchenko
2019-03-19 18:43 ` [PATCH v2 5/7] x86/boot: Add MMIO byte accessors Andy Shevchenko
2019-03-19 18:43 ` [PATCH v2 6/7] x86/boot: Introduce MMIO accessors and their support in earlyprintk Andy Shevchenko
2019-03-19 18:43 ` [PATCH v2 7/7] x86/boot: Support nocfg parameter for earlyprintk Andy Shevchenko
2019-03-20 15:05 ` Randy Dunlap
2019-03-20 15:17 ` Andy Shevchenko
2019-03-20 15:19 ` Randy Dunlap
2019-03-20 16:15 ` Andy Shevchenko
2019-03-20 16:30 ` Borislav Petkov
2019-03-20 17:29 ` Andy Shevchenko
2019-03-28 13:03 ` Borislav Petkov
2019-03-28 13:21 ` Andy Shevchenko
2019-03-28 13:42 ` Borislav Petkov
2019-03-28 14:00 ` Andy Shevchenko
2019-03-28 14:13 ` Borislav Petkov
2019-03-28 14:27 ` Andy Shevchenko
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