[OpenBIOS] [PATCH 1/6] pci.c: add generation of pci node available property

[Mark Cave-Ayland]

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