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term/ns8250: Support more MMIO access sizes

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It is common for PCI based UARTs to use larger than one byte access
sizes. This adds support for this and uses the information present
in SPCR accordingly.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
This commit is contained in:
Benjamin Herrenschmidt authored and Daniel Kiper committed 2023-01-19 17:39:04 +01:00
1 parent 7b192ec4cd
commit f5e1d23a18
3 files changed
+60 -6
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include/grub/serial.h
+8 -2
View File
@@ -94,7 +94,12 @@ struct grub_serial_port
#if defined(__mips__) || defined (__i386__) || defined (__x86_64__)
grub_port_t port;
#endif
grub_addr_t mmio_base;
struct
{
grub_addr_t mmio_base;
/* Access size uses ACPI definition. */
grub_uint8_t access_size;
};
};
};
struct
@@ -187,7 +192,8 @@ grub_serial_config_defaults (struct grub_serial_port *port)
void grub_ns8250_init (void);
char *grub_ns8250_spcr_init (void);
char *grub_serial_ns8250_add_port (grub_port_t port, struct grub_serial_config *config);
char *grub_serial_ns8250_add_mmio (grub_addr_t addr, struct grub_serial_config *config);
char *grub_serial_ns8250_add_mmio (grub_addr_t addr, unsigned int acc_size,
struct grub_serial_config *config);
#endif
#ifdef GRUB_MACHINE_IEEE1275
void grub_ofserial_init (void);