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uart: Support multiple ports

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The port for console remains to be a compile time constant.
The Kconfig option is changed to select an UART port with index
to avoid putting map of UART base addresses in Kconfigs.

With this change it is possible to have other than debug console
on different UART port.

Change-Id: Ie1845a946f8d3b2604ef5404edb31b2e811f3ccd
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: http://review.coreboot.org/5342
Tested-by: build bot (Jenkins)
Reviewed-by: David Hendricks <dhendrix@chromium.org>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
This commit is contained in:
Kyösti Mälkki
2014-03-14 22:28:29 +02:00
parent a8d089d3ac
commit 70342a7f51
19 changed files with 147 additions and 311 deletions
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16
src/drivers/uart/uart8250mem.c
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@ -89,9 +89,9 @@ static void uart8250_mem_init(unsigned base_port, unsigned divisor)
write8(base_port + UART_LCR, CONFIG_TTYS0_LCS);
}
void uart_init(void)
void uart_init(int idx)
{
u32 base = uart_platform_base(0);
u32 base = uart_platform_base(idx);
if (!base)
return;
@ -100,25 +100,25 @@ void uart_init(void)
uart8250_mem_init(base, div);
}
void uart_tx_byte(unsigned char data)
void uart_tx_byte(int idx, unsigned char data)
{
u32 base = uart_platform_base(0);
u32 base = uart_platform_base(idx);
if (!base)
return;
uart8250_mem_tx_byte(base, data);
}
unsigned char uart_rx_byte(void)
unsigned char uart_rx_byte(int idx)
{
u32 base = uart_platform_base(0);
u32 base = uart_platform_base(idx);
if (!base)
return 0xff;
return uart8250_mem_rx_byte(base);
}
void uart_tx_flush(void)
void uart_tx_flush(int idx)
{
u32 base = uart_platform_base(0);
u32 base = uart_platform_base(idx);
if (!base)
return;
uart8250_mem_tx_flush(base);