From: Serge Semin <fancer.lancer@gmail.com>
To: ralf@linux-mips.org, paul.burton@imgtec.com, rabinv@axis.com,
matt.redfearn@imgtec.com, james.hogan@imgtec.com,
alexander.sverdlin@nokia.com, robh+dt@kernel.org,
frowand.list@gmail.com
Cc: Sergey.Semin@t-platforms.ru, linux-mips@linux-mips.org,
devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
Serge Semin <fancer.lancer@gmail.com>
Subject: [PATCH 04/21] MIPS memblock: Alter user-defined memory parameter parser
Date: Mon, 19 Dec 2016 05:07:29 +0300 [thread overview]
Message-ID: <1482113266-13207-5-git-send-email-fancer.lancer@gmail.com> (raw)
In-Reply-To: <1482113266-13207-1-git-send-email-fancer.lancer@gmail.com>
Both new memblock and boot_mem_map subsystems need to be fully
cleared before a new memory region is added. So the early parser is
correspondingly modified.
Signed-off-by: Serge Semin <fancer.lancer@gmail.com>
---
arch/mips/kernel/setup.c | 67 +++++++++++++++++-------------
1 file changed, 37 insertions(+), 30 deletions(-)
diff --git a/arch/mips/kernel/setup.c b/arch/mips/kernel/setup.c
index 9da6f8a..789aafe 100644
--- a/arch/mips/kernel/setup.c
+++ b/arch/mips/kernel/setup.c
@@ -229,6 +229,43 @@ static void __init print_memory_map(void)
}
/*
+ * Parse "mem=size@start" parameter rewriting a defined memory map
+ * We look for mem=size@start, where start and size are "value[KkMm]"
+ */
+static int __init early_parse_mem(char *p)
+{
+ static int usermem;
+ phys_addr_t start, size;
+
+ start = PHYS_OFFSET;
+ size = memparse(p, &p);
+ if (*p == '@')
+ start = memparse(p + 1, &p);
+
+ /*
+ * If a user specifies memory size, we blow away any automatically
+ * generated regions.
+ */
+ if (usermem == 0) {
+ phys_addr_t ram_start = memblock_start_of_DRAM();
+ phys_addr_t ram_end = memblock_end_of_DRAM() - ram_start;
+
+ pr_notice("Discard memory layout %pa - %pa",
+ &ram_start, &ram_end);
+
+ memblock_remove(ram_start, ram_end - ram_start);
+ boot_mem_map.nr_map = 0;
+ usermem = 1;
+ }
+ pr_notice("Add userdefined memory region %08zx @ %pa",
+ (size_t)size, &start);
+
+ add_memory_region(start, size, BOOT_MEM_RAM);
+ return 0;
+}
+early_param("mem", early_parse_mem);
+
+/*
* Manage initrd
*/
#ifdef CONFIG_BLK_DEV_INITRD
@@ -613,31 +650,6 @@ static void __init bootmem_init(void)
* initialization hook for anything else was introduced.
*/
-static int usermem __initdata;
-
-static int __init early_parse_mem(char *p)
-{
- phys_addr_t start, size;
-
- /*
- * If a user specifies memory size, we
- * blow away any automatically generated
- * size.
- */
- if (usermem == 0) {
- boot_mem_map.nr_map = 0;
- usermem = 1;
- }
- start = 0;
- size = memparse(p, &p);
- if (*p == '@')
- start = memparse(p + 1, &p);
-
- add_memory_region(start, size, BOOT_MEM_RAM);
- return 0;
-}
-early_param("mem", early_parse_mem);
-
#ifdef CONFIG_PROC_VMCORE
unsigned long setup_elfcorehdr, setup_elfcorehdr_size;
static int __init early_parse_elfcorehdr(char *p)
@@ -797,11 +809,6 @@ static void __init arch_mem_init(char **cmdline_p)
parse_early_param();
- if (usermem) {
- pr_info("User-defined physical RAM map:\n");
- print_memory_map();
- }
-
bootmem_init();
#ifdef CONFIG_PROC_VMCORE
if (setup_elfcorehdr && setup_elfcorehdr_size) {
--
2.6.6
next prev parent reply other threads:[~2016-12-19 2:09 UTC|newest]
Thread overview: 60+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-12-19 2:07 [PATCH 00/21] MIPS memblock: Remove bootmem code and switch to NO_BOOTMEM Serge Semin
2016-12-19 2:07 ` [PATCH 01/21] MIPS memblock: Unpin dts memblock sanity check method Serge Semin
2016-12-19 4:21 ` kbuild test robot
2016-12-19 4:21 ` kbuild test robot
2016-12-19 4:28 ` kbuild test robot
2016-12-19 4:28 ` kbuild test robot
2016-12-22 20:57 ` Rob Herring
2016-12-22 21:57 ` Serge Semin
2016-12-19 2:07 ` [PATCH 02/21] MIPS memblock: Add dts mem and reserved-mem callbacks Serge Semin
2016-12-19 4:13 ` kbuild test robot
2016-12-19 4:13 ` kbuild test robot
2016-12-19 2:07 ` [PATCH 03/21] MIPS memblock: Alter traditional add_memory_region() method Serge Semin
2016-12-19 2:07 ` Serge Semin [this message]
2017-01-23 7:55 ` [PATCH 04/21] MIPS memblock: Alter user-defined memory parameter parser Marcin Nowakowski
2017-01-23 7:55 ` Marcin Nowakowski
2016-12-19 2:07 ` [PATCH 05/21] MIPS memblock: Alter initrd memory reservation method Serge Semin
2016-12-19 5:08 ` kbuild test robot
2016-12-19 5:08 ` kbuild test robot
2016-12-19 2:07 ` [PATCH 06/21] MIPS memblock: Alter kexec-crashkernel parameters parser Serge Semin
2016-12-19 2:07 ` [PATCH 07/21] MIPS memblock: Alter elfcorehdr " Serge Semin
2016-12-19 4:09 ` kbuild test robot
2016-12-19 4:09 ` kbuild test robot
2016-12-19 2:07 ` [PATCH 08/21] MIPS memblock: Move kernel parameters parser into individual method Serge Semin
2016-12-19 2:07 ` [PATCH 09/21] MIPS memblock: Move kernel memory reservation to " Serge Semin
2016-12-19 2:07 ` [PATCH 10/21] MIPS memblock: Discard bootmem allocator initialization Serge Semin
2016-12-19 4:28 ` kbuild test robot
2016-12-19 4:28 ` kbuild test robot
2017-01-23 7:55 ` Marcin Nowakowski
2017-01-23 7:55 ` Marcin Nowakowski
2016-12-19 2:07 ` [PATCH 11/21] MIPS memblock: Add memblock sanity check method Serge Semin
2016-12-19 2:07 ` [PATCH 12/21] MIPS memblock: Add memblock print outs in debug Serge Semin
2016-12-19 2:07 ` [PATCH 13/21] MIPS memblock: Add memblock allocator initialization Serge Semin
2016-12-19 2:07 ` [PATCH 14/21] MIPS memblock: Alter IO resources initialization method Serge Semin
2016-12-19 2:07 ` [PATCH 15/21] MIPS memblock: Alter weakened MAAR " Serge Semin
2016-12-19 2:07 ` [PATCH 16/21] MIPS memblock: Alter paging " Serge Semin
2016-12-19 2:07 ` [PATCH 17/21] MIPS memblock: Alter high memory freeing method Serge Semin
2016-12-19 2:07 ` [PATCH 18/21] MIPS memblock: Slightly improve buddy allocator init method Serge Semin
2016-12-19 2:07 ` [PATCH 19/21] MIPS memblock: Add print out method of kernel virtual memory layout Serge Semin
2016-12-19 12:04 ` Matt Redfearn
2016-12-19 12:04 ` Matt Redfearn
2016-12-19 12:09 ` Serge Semin
2016-12-19 13:02 ` James Hogan
2016-12-19 13:02 ` James Hogan
2016-12-19 13:15 ` Serge Semin
2016-12-19 2:07 ` [PATCH 20/21] MIPS memblock: Add free low memory test method call Serge Semin
2016-12-19 2:07 ` [PATCH 21/21] MIPS memblock: Deactivate old bootmem allocator Serge Semin
2017-01-23 7:55 ` [PATCH 00/21] MIPS memblock: Remove bootmem code and switch to NO_BOOTMEM Marcin Nowakowski
2017-01-23 7:55 ` Marcin Nowakowski
2017-03-02 3:06 ` Florian Fainelli
2017-01-23 14:51 ` Joshua Kinard
2017-05-22 9:48 ` Marcin Nowakowski
2017-05-22 9:48 ` Marcin Nowakowski
2017-05-22 10:26 ` Serge Semin
2017-05-22 12:19 ` Marcin Nowakowski
2017-05-22 12:19 ` Marcin Nowakowski
2017-05-22 12:47 ` Joshua Kinard
2017-05-22 13:03 ` Serge Semin
2017-05-22 13:20 ` Alexander Sverdlin
2017-05-22 13:20 ` Alexander Sverdlin
2017-05-22 13:29 ` Serge Semin
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1482113266-13207-5-git-send-email-fancer.lancer@gmail.com \
--to=fancer.lancer@gmail.com \
--cc=Sergey.Semin@t-platforms.ru \
--cc=alexander.sverdlin@nokia.com \
--cc=devicetree@vger.kernel.org \
--cc=frowand.list@gmail.com \
--cc=james.hogan@imgtec.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mips@linux-mips.org \
--cc=matt.redfearn@imgtec.com \
--cc=paul.burton@imgtec.com \
--cc=rabinv@axis.com \
--cc=ralf@linux-mips.org \
--cc=robh+dt@kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).