On 08.10.2016 16:00, Greg KH wrote:
As this sequence hasn't changed in the Linux kernel at all, isn't this a
Grub issue?
thanks,
greg k-h
I guess as with any inconsistency between two systems it's a
philosophical question which one is 'wrong'. Maybe an interesting
question would be what other systems do nowadays. I have no idea, e.g.
how Windows handles this, but I just checked Syslinux, and it seems to
do the same as Grub2:
--- /syslinux/core/include/bios.h ---
#define SERIAL_BASE 0x0400 /* Base address for 4 serial ports */
...
static inline uint16_t get_serial_port(uint16_t port)
{
/* Magic array in BIOS memory, contains four entries */
const uint16_t * const serial_ports = (const uint16_t *)SERIAL_BASE;
/*
* If port > 3 then the port is simply the I/O base address
*/
if (port > 3)
return port;
/* Get the I/O port from the BIOS */
return serial_ports[port];
}
---
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