Leroy P Leahy (leroy.p.leahy@intel.com) just uploaded a new patch set to gerrit, which you can find at https://review.coreboot.org/15010
-gerrit
commit 472bfdfcf8ea63a36b90e1a0e333f68c44bea610 Author: Lee Leahy leroy.p.leahy@intel.com Date: Mon May 30 15:01:06 2016 -0700
quark: Enable HSUART0 as console
The use of HSUART0 on galileo requires early initialization of the I2C GPIO expanders to direct the RXD and TXD signals to DIGITAL 0 and 1 on the expansion connector.
TEST=None
Change-Id: I11195d79e954c1f6bc91eafe257d7ddc1310b2e7 Signed-off-by: Lee Leahy leroy.p.leahy@intel.com --- src/mainboard/intel/galileo/gen1.h | 50 ++++++++++++++++++++++++++++ src/mainboard/intel/galileo/gen2.h | 22 ++++++++++++ src/mainboard/intel/galileo/gpio.c | 38 +++++++++++++-------- src/soc/intel/quark/Kconfig | 27 ++++++++++----- src/soc/intel/quark/include/soc/pci_devs.h | 3 ++ src/soc/intel/quark/include/soc/reg_access.h | 1 - src/soc/intel/quark/romstage/romstage.c | 12 ++++--- 7 files changed, 126 insertions(+), 27 deletions(-)
diff --git a/src/mainboard/intel/galileo/gen1.h b/src/mainboard/intel/galileo/gen1.h index e1e8f59..23b2309 100644 --- a/src/mainboard/intel/galileo/gen1.h +++ b/src/mainboard/intel/galileo/gen1.h @@ -59,6 +59,56 @@ static const struct reg_script gen1_gpio_init[] = { REG_SCRIPT_END };
+static const struct reg_script gen1_hsuart0_0x20[] = { + /* Route UART0_TXD to LVL_TXD -> IO1 -> DIGITAL 1 + * Set IO1_MUX (EXP.PORT3_5) output, low + * Set LVL_OE (GPIO_SUS2) output, high + */ + + REG_I2C_WRITE(GEN1_I2C_GPIO_EXP_0x20, GEN1_GPIO_EXP_PORT_SELECT, 3), + REG_I2C_AND(GEN1_I2C_GPIO_EXP_0x20, GEN1_GPIO_EXP_PORT_DIR, ~BIT5), + REG_I2C_AND(GEN1_I2C_GPIO_EXP_0x20, GEN1_GPIO_EXP_OUTPUT3, ~BIT5), + + /* Route DIGITAL 0 -> IO0 -> LVL_RXD -> UART0_RXD + * Set IO0_MUX (EXP.PORT3_4) output, low + * Set LVL_OE (GPIO_SUS2) output, high + */ + REG_I2C_WRITE(GEN1_I2C_GPIO_EXP_0x20, GEN1_GPIO_EXP_PORT_SELECT, 3), + REG_I2C_AND(GEN1_I2C_GPIO_EXP_0x20, GEN1_GPIO_EXP_PORT_DIR, ~BIT4), + REG_I2C_AND(GEN1_I2C_GPIO_EXP_0x20, GEN1_GPIO_EXP_OUTPUT3, ~BIT4), + + REG_LEG_GPIO_OR(R_QNC_GPIO_RGEN_RESUME_WELL, BIT2), + REG_LEG_GPIO_AND(R_QNC_GPIO_RGIO_RESUME_WELL, ~BIT2), + REG_LEG_GPIO_OR(R_QNC_GPIO_RGLVL_RESUME_WELL, BIT2), + + REG_SCRIPT_END +}; + +static const struct reg_script gen1_hsuart0_0x21[] = { + /* Route UART0_TXD to LVL_TXD -> IO1 -> DIGITAL 1 + * Set IO1_MUX (EXP.PORT3_5) output, low + * Set LVL_OE (GPIO_SUS2) output, high + */ + + REG_I2C_WRITE(GEN1_I2C_GPIO_EXP_0x21, GEN1_GPIO_EXP_PORT_SELECT, 3), + REG_I2C_AND(GEN1_I2C_GPIO_EXP_0x21, GEN1_GPIO_EXP_PORT_DIR, ~BIT5), + REG_I2C_AND(GEN1_I2C_GPIO_EXP_0x21, GEN1_GPIO_EXP_OUTPUT3, ~BIT5), + + /* Route DIGITAL 0 -> IO0 -> LVL_RXD -> UART0_RXD + * Set IO0_MUX (EXP.PORT3_4) output, low + * Set LVL_OE (GPIO_SUS2) output, high + */ + REG_I2C_WRITE(GEN1_I2C_GPIO_EXP_0x21, GEN1_GPIO_EXP_PORT_SELECT, 3), + REG_I2C_AND(GEN1_I2C_GPIO_EXP_0x21, GEN1_GPIO_EXP_PORT_DIR, ~BIT4), + REG_I2C_AND(GEN1_I2C_GPIO_EXP_0x21, GEN1_GPIO_EXP_OUTPUT3, ~BIT4), + + REG_LEG_GPIO_OR(R_QNC_GPIO_RGEN_RESUME_WELL, BIT2), + REG_LEG_GPIO_AND(R_QNC_GPIO_RGIO_RESUME_WELL, ~BIT2), + REG_LEG_GPIO_OR(R_QNC_GPIO_RGLVL_RESUME_WELL, BIT2), + + REG_SCRIPT_END +}; + static const struct reg_script gen1_i2c_0x20_init[] = { /* Route I2C pins to Arduino header: * Clear I2C_MUX (GPORT1_BIT5) to route I2C to Arduino Shield connector diff --git a/src/mainboard/intel/galileo/gen2.h b/src/mainboard/intel/galileo/gen2.h index 8eee744..10c8321 100644 --- a/src/mainboard/intel/galileo/gen2.h +++ b/src/mainboard/intel/galileo/gen2.h @@ -52,6 +52,28 @@ static const struct reg_script gen2_gpio_init[] = { REG_SCRIPT_END };
+static const struct reg_script gen2_hsuart0[] = { + /* Route UART0_TXD to MUX7_Y -> BUF_IO1 -> IO1 -> DIGITAL 1 + * Set MUX7_SEL (EXP1.P1_5) high + * Configure MUX7_SEL (EXP1.P1_5) as an output + * Set LVL_B_OE6_N (EXP0.P1_4) low + * Configure LVL_B_OE6_N (EXP0.P1_4) as an output + */ + REG_I2C_OR(GEN2_I2C_GPIO_EXP1, GEN2_GPIO_EXP_OUTPUT1, BIT5), + REG_I2C_AND(GEN2_I2C_GPIO_EXP1, GEN2_GPIO_EXP_CONFIG1, ~BIT5), + REG_I2C_AND(GEN2_I2C_GPIO_EXP0, GEN2_GPIO_EXP_OUTPUT1, ~BIT4), + REG_I2C_AND(GEN2_I2C_GPIO_EXP0, GEN2_GPIO_EXP_CONFIG1, ~BIT4), + + /* Route DIGITAL 0 -> IO0 -> UART0_RXD + * Set LVL_C_OE0_N (EXP1.P0_0) high + * Configure LVL_C_OE0_N (EXP1.P0_0) as an output + */ + REG_I2C_OR(GEN2_I2C_GPIO_EXP1, GEN2_GPIO_EXP_OUTPUT0, BIT0), + REG_I2C_AND(GEN2_I2C_GPIO_EXP1, GEN2_GPIO_EXP_CONFIG0, ~BIT0), + + REG_SCRIPT_END +}; + static const struct reg_script gen2_i2c_init[] = { /* Route I2C to Arduino Shield connector: * Set AMUX1_IN (EXP2.P1_4) low diff --git a/src/mainboard/intel/galileo/gpio.c b/src/mainboard/intel/galileo/gpio.c index 0c26ec8..20b1bea 100644 --- a/src/mainboard/intel/galileo/gpio.c +++ b/src/mainboard/intel/galileo/gpio.c @@ -15,11 +15,35 @@
#include <arch/io.h> #include <console/console.h> +#include <fsp/romstage.h> #include <soc/ramstage.h> #include "reg_access.h" #include "gen1.h" #include "gen2.h"
+void car_mainboard_pre_console_init(void) +{ + const struct reg_script *script; + + /* Initialize the GPIO controllers */ + if (IS_ENABLED(CONFIG_GALILEO_GEN2)) + script = gen2_gpio_init; + else + script = gen1_gpio_init; + reg_script_run(script); + + /* Initialize the RXD and TXD paths for UART0 */ + if (IS_ENABLED(CONFIG_ENABLE_BUILTIN_HSUART0)) { + if (IS_ENABLED(CONFIG_GALILEO_GEN2)) + script = gen2_hsuart0; + else + script = (reg_legacy_gpio_read (R_QNC_GPIO_RGLVL_RESUME_WELL) + & GALILEO_DETERMINE_IOEXP_SLA_RESUMEWELL_GPIO) + ? gen1_hsuart0_0x21 : gen1_hsuart0_0x20; + reg_script_run(script); + } +} + void mainboard_gpio_i2c_init(device_t dev) { const struct reg_script *script; @@ -33,24 +57,12 @@ void mainboard_gpio_i2c_init(device_t dev) /* Determine which I2C address is in use */ script = (reg_legacy_gpio_read (R_QNC_GPIO_RGLVL_RESUME_WELL) & GALILEO_DETERMINE_IOEXP_SLA_RESUMEWELL_GPIO) - ? gen1_i2c_0x20_init : gen1_i2c_0x21_init; + ? gen1_i2c_0x21_init : gen1_i2c_0x20_init;
/* Initialize the I2C chips */ reg_script_run(script); }
-void mainboard_gpio_init(void) -{ - const struct reg_script *script; - - /* Initialize the GPIO controllers */ - if (IS_ENABLED(CONFIG_GALILEO_GEN2)) - script = gen2_gpio_init; - else - script = gen1_gpio_init; - reg_script_run(script); -} - void mainboard_gpio_pcie_reset(uint32_t pin_value) { uint32_t pin_number; diff --git a/src/soc/intel/quark/Kconfig b/src/soc/intel/quark/Kconfig index 6a2349f..2c7ec64 100644 --- a/src/soc/intel/quark/Kconfig +++ b/src/soc/intel/quark/Kconfig @@ -40,9 +40,19 @@ config CPU_SPECIFIC_OPTIONS # The following options configure the debug serial port #####
+config ENABLE_BUILTIN_HSUART0 + bool "Enable built-in HSUART0" + default n + select NO_UART_ON_SUPERIO + select DRIVERS_UART_8250MEM_32 + help + The Quark SoC has two HSUART. Choose this option to configure the pads + and enable HSUART0, which can be used for the debug console. + config ENABLE_BUILTIN_HSUART1 bool "Enable built-in HSUART1" - default y + default n + depends on ! ENABLE_BUILTIN_HSUART0 select NO_UART_ON_SUPERIO select DRIVERS_UART_8250MEM_32 help @@ -50,23 +60,24 @@ config ENABLE_BUILTIN_HSUART1 and enable HSUART1, which can be used for the debug console.
config TTYS0_BASE - hex "HSUART1 Base Address" - depends on ENABLE_BUILTIN_HSUART1 + hex "HSUART Base Address" default 0xA0019000 + depends on ENABLE_BUILTIN_HSUART0 || ENABLE_BUILTIN_HSUART1 help - Memory mapped MMIO of HSUART1. + Memory mapped MMIO of HSUART.
config TTYS0_LCS int - depends on ENABLE_BUILTIN_HSUART1 default 3 + depends on ENABLE_BUILTIN_HSUART0 || ENABLE_BUILTIN_HSUART1
-# Console: PCI UART bus 0 << 20, device 20 << 15, function 5 << 12 +# Console: PCI UART bus 0 << 20, device 20 << 15, function x << 12 # Valid bit, PCI UART in use: 1 << 31 config UART_PCI_ADDR hex - depends on ENABLE_BUILTIN_HSUART1 - default 0x800a5000 + default 0x800a1000 if ENABLE_BUILTIN_HSUART0 + default 0x800a5000 if ENABLE_BUILTIN_HSUART1 + depends on ENABLE_BUILTIN_HSUART0 || ENABLE_BUILTIN_HSUART1
##### # Debug support diff --git a/src/soc/intel/quark/include/soc/pci_devs.h b/src/soc/intel/quark/include/soc/pci_devs.h index 278a012..0c99eb9 100644 --- a/src/soc/intel/quark/include/soc/pci_devs.h +++ b/src/soc/intel/quark/include/soc/pci_devs.h @@ -33,11 +33,14 @@
/* IO Fabric 1 */ #define SIO1_DEV 0x14 +#define HSUART0_DEV SIO1_DEV #define HSUART1_DEV SIO1_DEV +#define HSUART0_FUNC 1 #define USB_DEV_PORT_FUNC 2 #define EHCI_FUNC 3 #define OHCI_FUNC 4 #define HSUART1_FUNC 5 +#define HSUART0_BDF PCI_DEV(PCI_BUS_NUMBER_QNC, HSUART0_DEV, HSUART0_FUNC) #define HSUART1_BDF PCI_DEV(PCI_BUS_NUMBER_QNC, HSUART1_DEV, HSUART1_FUNC)
/* IO Fabric 2 */ diff --git a/src/soc/intel/quark/include/soc/reg_access.h b/src/soc/intel/quark/include/soc/reg_access.h index e7a8963..b934032 100644 --- a/src/soc/intel/quark/include/soc/reg_access.h +++ b/src/soc/intel/quark/include/soc/reg_access.h @@ -203,7 +203,6 @@ enum { REG_USB_RXW(reg_, 0xffffffff, value_)
void *get_i2c_address(void); -void mainboard_gpio_init(void); void mainboard_gpio_pcie_reset(uint32_t pin_value); void mcr_write(uint8_t opcode, uint8_t port, uint32_t reg_address); uint32_t mdr_read(void); diff --git a/src/soc/intel/quark/romstage/romstage.c b/src/soc/intel/quark/romstage/romstage.c index 5be022a..e27aa68 100644 --- a/src/soc/intel/quark/romstage/romstage.c +++ b/src/soc/intel/quark/romstage/romstage.c @@ -67,6 +67,13 @@ static const struct reg_script hsuart_init[] = {
void car_soc_pre_console_init(void) { + /* Initialize the controllers */ + reg_script_run_on_dev(I2CGPIO_BDF, i2c_gpio_controller_init); + reg_script_run_on_dev(LPC_BDF, legacy_gpio_init); + + /* Enable the HSUART */ + if (IS_ENABLED(CONFIG_ENABLE_BUILTIN_HSUART0)) + reg_script_run_on_dev(HSUART0_BDF, hsuart_init); if (IS_ENABLED(CONFIG_ENABLE_BUILTIN_HSUART1)) reg_script_run_on_dev(HSUART1_BDF, hsuart_init); } @@ -74,11 +81,6 @@ void car_soc_pre_console_init(void) void car_soc_post_console_init(void) { report_platform_info(); - - /* Initialize the controllers */ - reg_script_run_on_dev(I2CGPIO_BDF, i2c_gpio_controller_init); - reg_script_run_on_dev(LPC_BDF, legacy_gpio_init); - mainboard_gpio_init(); };
static struct chipset_power_state power_state CAR_GLOBAL;