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authorNico Huber <nico.h@gmx.de>2019-11-17 01:24:44 +0100
committerPatrick Georgi <pgeorgi@google.com>2019-11-18 11:51:10 +0000
commit25128a79970bc9756ad33e1f1740e11321d1ff40 (patch)
tree43ae7d1022ae9fb0857ce95b4f0d3ea60f28f7a0 /src/mainboard/samsung
parentcc32a6980797abc5ce6365ce4c4c8c7418c8c224 (diff)
downloadcoreboot-25128a79970bc9756ad33e1f1740e11321d1ff40.tar.xz
mb/samsung: Clean up LPC and IOAPIC configuration
Don't overwrite the LPC decode config of the generic PCH code, move UART init into bootblock_mainboard_early_init() and don't enable the IOAPIC, which is already done by generic code. Change-Id: I90d090f5bff29174e68981fea3c3f04c666b1d28 Signed-off-by: Nico Huber <nico.h@gmx.de> Reviewed-on: https://review.coreboot.org/c/coreboot/+/36895 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
Diffstat (limited to 'src/mainboard/samsung')
-rw-r--r--src/mainboard/samsung/lumpy/early_init.c24
-rw-r--r--src/mainboard/samsung/stumpy/early_init.c25
2 files changed, 7 insertions, 42 deletions
diff --git a/src/mainboard/samsung/lumpy/early_init.c b/src/mainboard/samsung/lumpy/early_init.c
index 6bc545c57e..af4e55dc22 100644
--- a/src/mainboard/samsung/lumpy/early_init.c
+++ b/src/mainboard/samsung/lumpy/early_init.c
@@ -17,6 +17,7 @@
#include <stdint.h>
#include <string.h>
#include <arch/io.h>
+#include <bootblock_common.h>
#include <device/pci_ops.h>
#include <device/pci_def.h>
#include <cpu/x86/lapic.h>
@@ -33,22 +34,10 @@
#include <superio/smsc/lpc47n207/lpc47n207.h>
#endif
-void mainboard_pch_lpc_setup(void)
+void bootblock_mainboard_early_init(void)
{
- /* Set COM1/COM2 decode range */
- pci_write_config16(PCH_LPC_DEV, LPC_IO_DEC, 0x0010);
-
-#if CONFIG(DRIVERS_UART_8250IO)
- /* Enable SuperIO + EC + KBC + COM1 + lpc47n207 config*/
- pci_write_config16(PCH_LPC_DEV, LPC_EN, CNF1_LPC_EN | MC_LPC_EN |
- KBC_LPC_EN | CNF2_LPC_EN | COMA_LPC_EN);
-
- try_enabling_LPC47N207_uart();
-#else
- /* Enable SuperIO + EC + KBC */
- pci_write_config16(PCH_LPC_DEV, LPC_EN, CNF1_LPC_EN | MC_LPC_EN |
- KBC_LPC_EN);
-#endif
+ if (CONFIG(DRIVERS_UART_8250IO))
+ try_enabling_LPC47N207_uart();
}
void mainboard_late_rcba_config(void)
@@ -88,11 +77,6 @@ void mainboard_late_rcba_config(void)
DIR_ROUTE(D26IR, PIRQB, PIRQC, PIRQD, PIRQA);
DIR_ROUTE(D25IR, PIRQA, PIRQB, PIRQC, PIRQD);
DIR_ROUTE(D22IR, PIRQA, PIRQB, PIRQC, PIRQD);
-
- /* Enable IOAPIC (generic) */
- RCBA16(OIC) = 0x0100;
- /* PCH BWG says to read back the IOAPIC enable register */
- (void) RCBA16(OIC);
}
static const uint8_t *locate_spd(void)
diff --git a/src/mainboard/samsung/stumpy/early_init.c b/src/mainboard/samsung/stumpy/early_init.c
index 03cb8d70a3..7fca8adfcc 100644
--- a/src/mainboard/samsung/stumpy/early_init.c
+++ b/src/mainboard/samsung/stumpy/early_init.c
@@ -46,23 +46,6 @@
#define SERIAL_DEV PNP_DEV(0x2e, IT8772F_SP1)
#define GPIO_DEV PNP_DEV(0x2e, IT8772F_GPIO)
-void mainboard_pch_lpc_setup(void)
-{
- /* Set COM1/COM2 decode range */
- pci_write_config16(PCH_LPC_DEV, LPC_IO_DEC, 0x0010);
-
-#if CONFIG(DRIVERS_UART_8250IO)
- /* Enable SuperIO + PS/2 Keyboard/Mouse + COM1 + lpc47n207 config*/
- pci_write_config16(PCH_LPC_DEV, LPC_EN, CNF1_LPC_EN | KBC_LPC_EN |\
- CNF2_LPC_EN | COMA_LPC_EN);
-
- try_enabling_LPC47N207_uart();
-#else
- /* Enable SuperIO + PS/2 Keyboard/Mouse */
- pci_write_config16(PCH_LPC_DEV, LPC_EN, CNF1_LPC_EN | KBC_LPC_EN);
-#endif
-}
-
void mainboard_late_rcba_config(void)
{
/*
@@ -97,11 +80,6 @@ void mainboard_late_rcba_config(void)
DIR_ROUTE(D26IR, PIRQE, PIRQF, PIRQG, PIRQH);
DIR_ROUTE(D25IR, PIRQA, PIRQB, PIRQC, PIRQD);
DIR_ROUTE(D22IR, PIRQA, PIRQB, PIRQC, PIRQD);
-
- /* Enable IOAPIC (generic) */
- RCBA16(OIC) = 0x0100;
- /* PCH BWG says to read back the IOAPIC enable register */
- (void) RCBA16(OIC);
}
static void setup_sio_gpios(void)
@@ -242,6 +220,9 @@ int mainboard_should_reset_usb(int s3resume)
void bootblock_mainboard_early_init(void)
{
+ if (CONFIG(DRIVERS_UART_8250IO))
+ try_enabling_LPC47N207_uart();
+
setup_sio_gpios();
/* Early SuperIO setup */