public inbox for u-boot@lists.denx.de
 help / color / mirror / Atom feed
From: Jan Kiszka <jan.kiszka@siemens.com>
To: u-boot@lists.denx.de
Subject: [U-Boot] [PATCH v5 01/14] sun7i: Remove duplicate call to psci_arch_init
Date: Thu, 12 Mar 2015 14:44:28 +0100	[thread overview]
Message-ID: <5501983C.6020202@siemens.com> (raw)
In-Reply-To: <20150312122853.GZ32541@bill-the-cat>

Am 2015-03-12 um 13:28 schrieb Tom Rini:
> On Thu, Mar 12, 2015 at 08:34:34AM +0100, Jan Kiszka wrote:
>> Am 2015-03-11 um 16:11 schrieb Tom Rini:
>>> On Mon, Mar 09, 2015 at 08:00:11AM +0100, Jan Kiszka wrote:
>>>
>>>> This is already invoked a few cycles later in monitor mode by
>>>> _secure_monitor. Drop it here, it serves no purpose.
>>>
>>> For clarity, because of the vector tables?
>>
>> Sorry, didn't get the question yet. Are you asking why it was added
>> initially (that would be a question for Marc) or why it serves no
>> purpose now?
> 
> You're saying we can drop the call to that function from where it was
> because it's called a few cycles later.  In mainline we would only (as
> far as I can see) call the function because the CPU went to the vector
> table and called it that way.
> 
> Or rather, I'm unclear as to how the function would be called a few
> cycles later, can you please expand the commit message to make it
> clearer?  Thanks!

Yeah, the call chain continues like this: _sunxi_cpu_entry calls
_do_nonsec_entry which which triggers via smc #0 _secure_monitor, and
there we have the second invocation. There is no alternative path. Better?

Jan

-- 
Siemens AG, Corporate Technology, CT RTC ITP SES-DE
Corporate Competence Center Embedded Linux

  reply	other threads:[~2015-03-12 13:44 UTC|newest]

Thread overview: 59+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-03-09  7:00 [U-Boot] [PATCH v5 00/14] Add PSCI support for Jetson TK1/Tegra124 + CNTFRQ fix Jan Kiszka
2015-03-09  7:00 ` [U-Boot] [PATCH v5 01/14] sun7i: Remove duplicate call to psci_arch_init Jan Kiszka
2015-03-11 15:11   ` Tom Rini
2015-03-12  7:34     ` Jan Kiszka
2015-03-12 12:28       ` Tom Rini
2015-03-12 13:44         ` Jan Kiszka [this message]
2015-03-21 13:34     ` Hans de Goede
2015-03-09  7:00 ` [U-Boot] [PATCH v5 02/14] ARM: Factor out common psci_get_cpu_id Jan Kiszka
2015-03-11 15:11   ` Tom Rini
2015-03-18 16:54   ` Ian Campbell
2015-03-19  7:52     ` Jan Kiszka
2015-03-09  7:00 ` [U-Boot] [PATCH v5 03/14] ARM: Factor out reusable psci_cpu_off_common Jan Kiszka
2015-03-11 15:12   ` Tom Rini
2015-03-09  7:00 ` [U-Boot] [PATCH v5 04/14] ARM: Factor out reusable psci_cpu_entry Jan Kiszka
2015-03-11 15:12   ` Tom Rini
2015-03-09  7:00 ` [U-Boot] [PATCH v5 05/14] ARM: Factor out reusable psci_get_cpu_stack_top Jan Kiszka
2015-03-11 15:12   ` Tom Rini
2015-03-09  7:00 ` [U-Boot] [PATCH v5 06/14] ARM: Put target PC for PSCI CPU_ON on per-CPU stack Jan Kiszka
2015-03-11 15:12   ` Tom Rini
2015-03-09  7:00 ` [U-Boot] [PATCH v5 07/14] tegra124: Add more registers to struct mc_ctlr Jan Kiszka
2015-03-11 15:12   ` Tom Rini
2015-03-09  7:00 ` [U-Boot] [PATCH v5 08/14] virt-dt: Allow reservation of secure region when in a RAM carveout Jan Kiszka
2015-03-11 15:12   ` Tom Rini
2015-03-12  7:34     ` Jan Kiszka
2015-03-12  8:18     ` Thierry Reding
2015-03-12 12:30       ` Tom Rini
2015-03-09  7:00 ` [U-Boot] [PATCH v5 09/14] tegra: Make tegra_powergate_power_on public Jan Kiszka
2015-03-11 15:12   ` Tom Rini
2015-03-09  7:00 ` [U-Boot] [PATCH v5 10/14] tegra: Add ap_pm_init hook Jan Kiszka
2015-03-11 15:12   ` Tom Rini
2015-03-09  7:00 ` [U-Boot] [PATCH v5 11/14] tegra124: Add PSCI support for Tegra124 Jan Kiszka
2015-03-11 15:12   ` Tom Rini
2015-03-09  7:00 ` [U-Boot] [PATCH v5 12/14] jetson-tk1: Add PSCI configuration options and reserve secure code Jan Kiszka
2015-03-11 15:12   ` Tom Rini
2015-03-09  7:00 ` [U-Boot] [PATCH v5 13/14] tegra124: Reserve secure RAM using MC_SECURITY_CFG{0, 1}_0 Jan Kiszka
2015-03-11 15:12   ` Tom Rini
2015-03-09  7:00 ` [U-Boot] [PATCH v5 14/14] tegra: Set CNTFRQ for secondary CPUs Jan Kiszka
2015-03-11 15:13   ` Tom Rini
2015-03-11  8:56 ` [U-Boot] [PATCH v5 00/14] Add PSCI support for Jetson TK1/Tegra124 + CNTFRQ fix Ian Campbell
2015-03-12  7:55   ` Ian Campbell
2015-03-11 15:11 ` Tom Rini
2015-03-18  6:40   ` Jan Kiszka
2015-03-18 16:02     ` Tom Warren
2015-03-18 16:54   ` Ian Campbell
2015-03-19  7:52     ` Jan Kiszka
2015-03-19 15:02 ` Thierry Reding
2015-04-08  8:37   ` Jan Kiszka
2015-04-08 13:43     ` Tom Rini
2015-04-08 13:55       ` Jan Kiszka
2015-04-08 14:02         ` Tom Rini
2015-04-08 14:12           ` Jan Kiszka
2015-04-08 15:54             ` Tom Rini
2015-04-08 16:13               ` Jan Kiszka
2015-04-08 16:22                 ` Tom Rini
2015-04-10  6:59     ` Thierry Reding
2015-04-10  7:07       ` Jan Kiszka
2015-04-10  9:54         ` Thierry Reding
2015-04-10 10:19           ` Jan Kiszka
2015-04-10 10:22             ` Thierry Reding

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=5501983C.6020202@siemens.com \
    --to=jan.kiszka@siemens.com \
    --cc=u-boot@lists.denx.de \
    /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