mirror of https://github.com/wolfSSL/wolfBoot.git
3bfd7de34d
A device advertising a 64KB IO BAR pushed the IO allocator cursor (info->io) past 0x10000 because pci_program_bar used 0xffffffff as the IO BAR limit. The PCI-to-PCI bridge IO base/limit registers are 8-bit and only carry address bits [15:8], so io_start >> 8 silently narrows a 0x20000 cursor to 0x00, programming a bogus bridge IO window 0x0000-0x0FFF that forwards legacy IO (8259A PIC, 8254 PIT, MC146818 RTC) to the secondary bus. x86 IO space is 16-bit, so IO BARs must never be allocated above 0xFFFF. Cap the IO BAR allocator limit at PCI_IO32_LIMIT (0x10000): oversized IO BARs are now skipped at allocation time and the bridge IO window is programmed from the real cursor, never narrowing onto legacy IO. Add test_program_bridge_io_64k_no_narrow proving the bridge IO window is no longer mis-programmed. The post-enum IO OOM case is removed as the cap makes that wrap unreachable. |
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| .. | ||
| bin-assemble | ||
| check_config | ||
| delta | ||
| efi | ||
| elf-parser | ||
| fdt-parser | ||
| keytools | ||
| lms | ||
| renode | ||
| scripts | ||
| squashelf | ||
| test-expect-version | ||
| test-update-server | ||
| tpm | ||
| uart-flash-server | ||
| unit-tests | ||
| xmss | ||
| config.mk | ||
| test-delta.mk | ||
| test-enc.mk | ||
| test-renode.mk | ||
| test.mk | ||
| wolfboot-rpi-devicetree.diff | ||