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author | Kevin O'Connor <kevin@koconnor.net> | 2010-12-31 14:38:10 -0500 |
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committer | Kevin O'Connor <kevin@koconnor.net> | 2011-01-01 11:01:19 -0500 |
commit | c2002a1be8e859f2f9022f7068f62977401798b4 (patch) | |
tree | d4cba32f8b45deaa8ef8de0ac04611aa6d379dc8 /src/boot.c | |
parent | a5f2b91060ee43c9acd0162227b85153cbbae1c6 (diff) | |
download | seabios-c2002a1be8e859f2f9022f7068f62977401798b4.zip seabios-c2002a1be8e859f2f9022f7068f62977401798b4.tar.gz seabios-c2002a1be8e859f2f9022f7068f62977401798b4.tar.bz2 |
Add support for finding the boot priority of USB drives.
Use the device path of the USB device to find a bootorder entry.
Diffstat (limited to 'src/boot.c')
-rw-r--r-- | src/boot.c | 15 |
1 files changed, 15 insertions, 0 deletions
@@ -162,6 +162,21 @@ int bootprio_find_named_rom(const char *name, int instance) return find_prio(desc); } +int bootprio_find_usb(int bdf, u64 path) +{ + // Find usb - for example: /pci@i0cf8/usb@1,2/hub@1/network@0/ethernet@0 + int i; + char desc[256], *p; + p = build_pci_path(desc, sizeof(desc), "usb", bdf); + for (i=56; i>0; i-=8) { + int port = (path >> i) & 0xff; + if (port != 0xff) + p += snprintf(p, desc+sizeof(desc)-p, "/hub@%x", port); + } + snprintf(p, desc+sizeof(desc)-p, "/*@%x", (u32)(path & 0xff)); + return find_prio(desc); +} + /**************************************************************** * Boot setup |