diff options
Diffstat (limited to 'src/soc')
| -rw-r--r-- | src/soc/intel/common/block/uart/uart.c | 75 |
1 files changed, 34 insertions, 41 deletions
diff --git a/src/soc/intel/common/block/uart/uart.c b/src/soc/intel/common/block/uart/uart.c index 559ba6da23..69b443c8a2 100644 --- a/src/soc/intel/common/block/uart/uart.c +++ b/src/soc/intel/common/block/uart/uart.c @@ -23,10 +23,10 @@ extern const struct uart_controller_config uart_ctrlr_config[]; extern const int uart_max_index; -static void uart_lpss_init(const struct device *dev, uintptr_t baseaddr) +static void uart_lpss_init(pci_devfn_t dev, uintptr_t baseaddr) { /* Ensure controller is in D0 state */ - lpss_set_power_state(PCI_BDF(dev), STATE_D0); + lpss_set_power_state(dev, STATE_D0); /* Take UART out of reset */ lpss_reset_release(baseaddr); @@ -58,60 +58,49 @@ static int uart_get_valid_index(void) return UART_CONSOLE_INVALID_INDEX; } -static void uart_common_init(const struct device *device, uintptr_t baseaddr) +static pci_devfn_t uart_console_get_pci_bdf(void) { -#if defined(__SIMPLE_DEVICE__) - pci_devfn_t dev = PCI_BDF(device); -#else - const struct device *dev = device; -#endif - - /* Set UART base address */ - pci_write_config32(dev, PCI_BASE_ADDRESS_0, baseaddr); - - /* Enable memory access and bus master */ - pci_write_config16(dev, PCI_COMMAND, UART_PCI_ENABLE); - - uart_lpss_init(device, baseaddr); -} + int devfn; + int index; -const struct device *uart_get_device(void) -{ /* * This function will get called even if INTEL_LPSS_UART_FOR_CONSOLE * config option is not selected. * By default return NULL in this case to avoid compilation errors. */ if (!CONFIG(INTEL_LPSS_UART_FOR_CONSOLE)) - return NULL; + return PCI_DEV_INVALID; - int console_index = uart_get_valid_index(); + index = uart_get_valid_index(); + if (index == UART_CONSOLE_INVALID_INDEX) + return PCI_DEV_INVALID; - if (console_index != UART_CONSOLE_INVALID_INDEX) - return pcidev_path_on_root(uart_ctrlr_config[console_index].devfn); - else + devfn = uart_ctrlr_config[index].devfn; + return PCI_DEV(0, PCI_SLOT(devfn), PCI_FUNC(devfn)); +} + +const struct device *uart_get_device(void) +{ + pci_devfn_t dev = uart_console_get_pci_bdf(); + if (dev == PCI_DEV_INVALID) return NULL; + + return pcidev_path_on_root(PCI_DEV2DEVFN(dev)); } bool uart_is_controller_initialized(void) { uintptr_t base; - const struct device *dev_uart = uart_get_device(); + pci_devfn_t dev = uart_console_get_pci_bdf(); - if (!dev_uart) + if (dev == PCI_DEV_INVALID) return false; -#if defined(__SIMPLE_DEVICE__) - pci_devfn_t dev = PCI_BDF(dev_uart); -#else - const struct device *dev = dev_uart; -#endif - - base = pci_read_config32(dev, PCI_BASE_ADDRESS_0) & ~0xFFF; + base = pci_s_read_config32(dev, PCI_BASE_ADDRESS_0) & ~0xFFF; if (!base) return false; - if ((pci_read_config16(dev, PCI_COMMAND) & UART_PCI_ENABLE) + if ((pci_s_read_config16(dev, PCI_COMMAND) & UART_PCI_ENABLE) != UART_PCI_ENABLE) return false; @@ -129,15 +118,19 @@ static void uart_configure_gpio_pads(void) void uart_bootblock_init(void) { - const struct device *dev_uart; + const uint32_t baseaddr = CONFIG_CONSOLE_UART_BASE_ADDRESS; + pci_devfn_t dev = uart_console_get_pci_bdf(); - dev_uart = uart_get_device(); - - if (!dev_uart) + if (dev == PCI_DEV_INVALID) return; - /* Program UART BAR0, command, reset and clock register */ - uart_common_init(dev_uart, CONFIG_CONSOLE_UART_BASE_ADDRESS); + /* Set UART base address */ + pci_s_write_config32(dev, PCI_BASE_ADDRESS_0, baseaddr); + + /* Enable memory access and bus master */ + pci_s_write_config16(dev, PCI_COMMAND, UART_PCI_ENABLE); + + uart_lpss_init(dev, baseaddr); /* Configure the 2 pads per UART. */ uart_configure_gpio_pads(); @@ -224,7 +217,7 @@ static void uart_common_enable_resources(struct device *dev) base = pci_read_config32(dev, PCI_BASE_ADDRESS_0) & ~0xFFF; if (base) - uart_lpss_init(dev, base); + uart_lpss_init(PCI_BDF(dev), base); } } |