mail archive of the barebox mailing list
 help / color / mirror / Atom feed
From: Sascha Hauer <s.hauer@pengutronix.de>
To: barebox@lists.infradead.org
Subject: [PATCH 04/14] ppc mpc5200: add function to determine configured sdram size
Date: Tue, 27 Sep 2011 10:28:19 +0200	[thread overview]
Message-ID: <1317112109-23311-5-git-send-email-s.hauer@pengutronix.de> (raw)
In-Reply-To: <1317112109-23311-1-git-send-email-s.hauer@pengutronix.de>

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
---
 arch/ppc/mach-mpc5xxx/cpu.c                  |   17 +++++++++++++++++
 arch/ppc/mach-mpc5xxx/include/mach/mpc5xxx.h |    3 +++
 2 files changed, 20 insertions(+), 0 deletions(-)

diff --git a/arch/ppc/mach-mpc5xxx/cpu.c b/arch/ppc/mach-mpc5xxx/cpu.c
index 391c705..cf2ca2f 100644
--- a/arch/ppc/mach-mpc5xxx/cpu.c
+++ b/arch/ppc/mach-mpc5xxx/cpu.c
@@ -113,3 +113,20 @@ int cpu_init_board_data(bd_t *bd)
 	bd->bi_pcifreq = get_pci_clock();
 	return 0;
 }
+
+unsigned long mpc5200_get_sdram_size(unsigned int cs)
+{
+	unsigned long size;
+
+	if (cs > 1)
+		return 0;
+
+	/* retrieve size of memory connected to SDRAM CS0 */
+	size = *(vu_long *)(MPC5XXX_SDRAM_CS0CFG + (cs * 4)) & 0xFF;
+	if (size >= 0x13)
+		size = (1 << (size - 0x13)) << 20;
+	else
+		size = 0;
+
+	return size;
+}
diff --git a/arch/ppc/mach-mpc5xxx/include/mach/mpc5xxx.h b/arch/ppc/mach-mpc5xxx/include/mach/mpc5xxx.h
index d7d0811..aad2418 100644
--- a/arch/ppc/mach-mpc5xxx/include/mach/mpc5xxx.h
+++ b/arch/ppc/mach-mpc5xxx/include/mach/mpc5xxx.h
@@ -779,6 +779,9 @@ struct mpc5xxx_mscan {
 /* function prototypes */
 void loadtask(int basetask, int tasks);
 
+/* retrieve configured sdram size connected to a chipselect */
+unsigned long mpc5200_get_sdram_size(unsigned int cs);
+
 #endif /* __ASSEMBLY__ */
 
 #endif /* __ASMPPC_MPC5XXX_H */
-- 
1.7.6.3


_______________________________________________
barebox mailing list
barebox@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/barebox

  parent reply	other threads:[~2011-09-27  8:28 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-09-27  8:28 more ppc and pcm030 cleanup Sascha Hauer
2011-09-27  8:28 ` [PATCH 01/14] ppc: remove mgt5100 support from code Sascha Hauer
2011-09-27  8:28 ` [PATCH 02/14] ppc: add a get_pc() function Sascha Hauer
2011-09-27  8:28 ` [PATCH 03/14] remove EARLY_INIT and EARLY_CONSOLE support Sascha Hauer
2011-09-27  8:28 ` Sascha Hauer [this message]
2011-09-27  8:28 ` [PATCH 05/14] ppc mpc5200: add function to configure a chipselect Sascha Hauer
2011-09-27  8:28 ` [PATCH 06/14] ppc mpc5200: add function to setup bus clocks Sascha Hauer
2011-09-27  8:28 ` [PATCH 07/14] ppc mpc5200b: cleanup lowlevel startup Sascha Hauer
2011-09-27  8:28 ` [PATCH 08/14] pcm030: use new functionality Sascha Hauer
2011-09-27  8:28 ` [PATCH 09/14] ppc: hardcode sdram base to 0x0 Sascha Hauer
2011-09-27  8:28 ` [PATCH 10/14] mpc5200: hardcode MBAR to 0xf0000000 Sascha Hauer
2011-09-27  8:28 ` [PATCH 11/14] mpc5200: hardcode internal sram for initram Sascha Hauer
2011-09-27  8:28 ` [PATCH 12/14] pcm030: fix /dev/self0 and /dev/env0 Sascha Hauer
2011-09-27  8:28 ` [PATCH 13/14] ppc mpc5200: remove bus clock switching from generic code Sascha Hauer
2011-09-27  8:28 ` [PATCH 14/14] pcm030: cleanup config.h Sascha Hauer

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=1317112109-23311-5-git-send-email-s.hauer@pengutronix.de \
    --to=s.hauer@pengutronix.de \
    --cc=barebox@lists.infradead.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