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[v3,4/8] hw/hppa: Change fw_cfg port address

Message ID 20200902193456.29844-5-deller@gmx.de
State New
Headers show
Series [v3,1/8] seabios-hppa: Update SeaBIOS to hppa-qemu-5.2-2 tag | expand

Commit Message

Helge Deller Sept. 2, 2020, 7:34 p.m. UTC 
Devices on hppa occupy at least 4k starting at the HPA, so MEMORY_HPA+4k is
blocked (by Linux) for the memory module.  I noticed this when testing the new
Linux kernel patch to let the fw_cfg entries show up in Linux under /proc.
The Linux kernel driver could not allocate the region for fw_cfg.
This new base address seems to not conflict.

Signed-off-by: Helge Deller <deller@gmx.de>
---
 hw/hppa/hppa_hardware.h | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

--
2.21.3
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Patch

diff --git a/hw/hppa/hppa_hardware.h b/hw/hppa/hppa_hardware.h
index cdb7fa6240..b2fbbc2eec 100644
--- a/hw/hppa/hppa_hardware.h
+++ b/hw/hppa/hppa_hardware.h
@@ -38,8 +38,7 @@ 
 #define PORT_PCI_CMD    (PCI_HPA + DINO_PCI_ADDR)
 #define PORT_PCI_DATA   (PCI_HPA + DINO_CONFIG_DATA)

-/* QEMU fw_cfg interface port */
-#define QEMU_FW_CFG_IO_BASE     (MEMORY_HPA + 0x80)
+#define QEMU_FW_CFG_IO_BASE     0xfffa0000

 #define PORT_SERIAL1    (DINO_UART_HPA + 0x800)
 #define PORT_SERIAL2    (LASI_UART_HPA + 0x800)