From mboxrd@z Thu Jan 1 00:00:00 1970 From: andrew at bradfordembedded.com Date: Wed, 3 Jun 2015 12:18:51 -0400 Subject: [U-Boot] [PATCH v2] x86: baytrail: pci region 3 is not always mapped to end of ram In-Reply-To: <1432321778-23960-1-git-send-email-andrew@bradfordembedded.com> References: <1432321778-23960-1-git-send-email-andrew@bradfordembedded.com> Message-ID: <1433348331-13997-1-git-send-email-andrew@bradfordembedded.com> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de From: Andrew Bradford Baytrail physically maps the first 2 GB of SDRAM from 0x0 to 0x7FFFFFFF and additional SDRAM is mapped from 0x100000000 and up. There is a physical memory hole from 0x80000000 to 0xFFFFFFFF for other uses. Because of this, PCI region 3 should only try to use up to the amount of SDRAM or 0x80000000, which ever is less. Signed-off-by: Andrew Bradford --- v2: limit maximum size to lesser of SDRAM or 0x80000000 --- arch/x86/cpu/baytrail/pci.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/x86/cpu/baytrail/pci.c b/arch/x86/cpu/baytrail/pci.c index 6c291f9..53475e8 100644 --- a/arch/x86/cpu/baytrail/pci.c +++ b/arch/x86/cpu/baytrail/pci.c @@ -39,7 +39,7 @@ void board_pci_setup_hose(struct pci_controller *hose) pci_set_region(hose->regions + 3, 0, 0, - gd->ram_size, + gd->ram_size < 0x80000000 ? gd->ram_size : 0x80000000;, PCI_REGION_MEM | PCI_REGION_SYS_MEMORY); hose->region_count = 4; -- 1.9.1