[OpenBIOS] [PATCH 1/6] pci.c: add generation of pci node available property
Mark Cave-Ayland
mark.cave-ayland at ilande.co.uk
Sun Jul 27 22:44:42 CEST 2014
Some OSs check for this value at boot, particulary NetBSD on SPARC64.
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland at ilande.co.uk>
---
openbios-devel/drivers/pci.c | 21 +++++++++++++++++++--
1 file changed, 19 insertions(+), 2 deletions(-)
diff --git a/openbios-devel/drivers/pci.c b/openbios-devel/drivers/pci.c
index ca92d63..0a37ac7 100644
--- a/openbios-devel/drivers/pci.c
+++ b/openbios-devel/drivers/pci.c
@@ -1375,6 +1375,21 @@ static void ob_configure_pci_device(const char* parent_path,
}
}
+static void ob_pci_set_available(phandle_t host, unsigned long mem_base, unsigned long io_base)
+{
+ /* Create an available property for both memory and IO space */
+ uint32_t props[10];
+ int ncells;
+
+ ncells = 0;
+ ncells += pci_encode_phys_addr(props + ncells, 0, MEMORY_SPACE_32, 0, 0, mem_base);
+ ncells += pci_encode_size(props + ncells, arch->mem_len - mem_base);
+ ncells += pci_encode_phys_addr(props + ncells, 0, IO_SPACE, 0, 0, io_base);
+ ncells += pci_encode_size(props + ncells, arch->io_len - io_base);
+
+ set_property(host, "available", (char *)props, ncells * sizeof(props[0]));
+}
+
int ob_pci_init(void)
{
int bus, devnum, fn;
@@ -1382,7 +1397,7 @@ int ob_pci_init(void)
unsigned long mem_base, io_base;
pci_config_t config = {}; /* host bridge */
- phandle_t phandle_host;
+ phandle_t phandle_host = 0;
PCI_DPRINTF("Initializing PCI host bridge...\n");
@@ -1430,7 +1445,9 @@ int ob_pci_init(void)
break;
}
-
+ /* create available attributes for the PCI bridge */
+ ob_pci_set_available(phandle_host, mem_base, io_base);
+
device_end();
return 0;
--
1.7.10.4
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