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| author | Marc Jones <marc.jones@se-eng.com> | 2013-11-05 17:47:37 -0700 |
|---|---|---|
| committer | Kyösti Mälkki <kyosti.malkki@gmail.com> | 2013-11-10 14:12:55 +0100 |
| commit | c4b6f3bacb7a2ac139f8b85c85388ef6fbda96d9 (patch) | |
| tree | bddda18f7d3e6d2c9d5fc8bfd27e24d75fb0d6f4 /src/mainboard | |
| parent | af0cd0921a277e0724d75e73271c8dd9ce70c0f9 (diff) | |
| download | coreboot-c4b6f3bacb7a2ac139f8b85c85388ef6fbda96d9.tar.xz | |
emeraldlake2: Clean up COM port enable
Remove the COM port enable loop. There is no need to
search for the port when it is needed and known by the
GPIO function.
Change-Id: Ie4e533fd9e49ed9ae62b209317b4b9853ff9926a
Signed-off-by: Marc Jones <marc.jones@se-eng.com>
Reviewed-on: http://review.coreboot.org/4027
Tested-by: build bot (Jenkins)
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Diffstat (limited to 'src/mainboard')
| -rw-r--r-- | src/mainboard/intel/emeraldlake2/romstage.c | 22 |
1 files changed, 10 insertions, 12 deletions
diff --git a/src/mainboard/intel/emeraldlake2/romstage.c b/src/mainboard/intel/emeraldlake2/romstage.c index 7691116276..363299df4b 100644 --- a/src/mainboard/intel/emeraldlake2/romstage.c +++ b/src/mainboard/intel/emeraldlake2/romstage.c @@ -42,31 +42,29 @@ #include <vendorcode/google/chromeos/chromeos.h> #endif +#define SIO_PORT 0x164e + static void pch_enable_lpc(void) { device_t dev = PCH_LPC_DEV; - int i; /* Set COM1/COM2 decode range */ pci_write_config16(dev, LPC_IO_DEC, 0x0010); - /* Enable SuperIO + COM1 + PS/2 Keyboard/Mouse */ - u16 lpc_config = CNF1_LPC_EN | CNF2_LPC_EN | COMA_LPC_EN | KBC_LPC_EN; + /* Enable SuperIO + PS/2 Keyboard/Mouse */ + u16 lpc_config = CNF1_LPC_EN | CNF2_LPC_EN | KBC_LPC_EN; pci_write_config16(dev, LPC_EN, lpc_config); /* Map 256 bytes at 0x1600 to the LPC bus. */ pci_write_config32(dev, LPC_GEN1_DEC, 0xfc1601); - /* Map a range for the runtime registers to the LPC bus. */ + /* Map a range for the runtime_port registers to the LPC bus. */ pci_write_config32(dev, LPC_GEN2_DEC, 0xc0181); - for (i = 0; i < ARRAY_SIZE(sio1007_lpc_ports); i++) { - if (sio1007_enable_uart_at(sio1007_lpc_ports[i])) { - /* Keep COMA UART enable bit on. */ - pci_write_config16(dev, LPC_EN, - lpc_config | COMA_LPC_EN); - break; - } + /* Enable COM1 */ + if (sio1007_enable_uart_at(SIO_PORT)) { + pci_write_config16(dev, LPC_EN, + lpc_config | COMA_LPC_EN); } } @@ -132,7 +130,7 @@ static void early_pch_init(void) static void setup_sio_gpios(void) { - const u16 port = 0x164e; + const u16 port = SIO_PORT; const u16 runtime_port = 0x180; /* Turn on configuration mode. */ |