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-rw-r--r--src/soc/amd/stoneyridge/include/soc/gpio.h8
-rw-r--r--src/soc/amd/stoneyridge/include/soc/iomap.h4
-rw-r--r--src/soc/amd/stoneyridge/include/soc/southbridge.h30
-rw-r--r--src/soc/amd/stoneyridge/southbridge.c26
4 files changed, 67 insertions, 1 deletions
diff --git a/src/soc/amd/stoneyridge/include/soc/gpio.h b/src/soc/amd/stoneyridge/include/soc/gpio.h
index b3dddd4ed7..84a4e84a17 100644
--- a/src/soc/amd/stoneyridge/include/soc/gpio.h
+++ b/src/soc/amd/stoneyridge/include/soc/gpio.h
@@ -30,6 +30,14 @@
#define GPIO_OUTPUT_MASK (1 << GPIO_OUTPUT_SHIFT)
#define GPIO_OUTPUT_ENABLE (1 << 23)
+/*
+ * The definitions below should be used to make GPIO arrays compact and
+ * easy to understand.
+ */
+#define INPUT 0
+#define OUTPUT_H (FCH_GPIO_OUTPUT_ENABLE | FCH_GPIO_OUTPUT_VALUE)
+#define OUTPUT_L FCH_GPIO_OUTPUT_ENABLE
+
/* GPIO_0 - GPIO_62 */
#define GPIO_BANK0_CONTROL(gpio) \
(AMD_SB_ACPI_MMIO_ADDR + 0x1500 + ((gpio) * 4))
diff --git a/src/soc/amd/stoneyridge/include/soc/iomap.h b/src/soc/amd/stoneyridge/include/soc/iomap.h
index 2d42ad9ad9..72a1e8c6f5 100644
--- a/src/soc/amd/stoneyridge/include/soc/iomap.h
+++ b/src/soc/amd/stoneyridge/include/soc/iomap.h
@@ -61,4 +61,8 @@
#define AB_DATA (AB_INDX+4)
#define SYS_RESET 0xcf9
+/* GPIO control and mux access */
+#define AMD_GPIO_MUX (AMD_SB_ACPI_MMIO_ADDR + 0x00000d00)
+#define AMD_GPIO_CONTROL (AMD_SB_ACPI_MMIO_ADDR + 0x00001500)
+
#endif /* __SOC_STONEYRIDGE_IOMAP_H__ */
diff --git a/src/soc/amd/stoneyridge/include/soc/southbridge.h b/src/soc/amd/stoneyridge/include/soc/southbridge.h
index 7f1e210123..f77640e70d 100644
--- a/src/soc/amd/stoneyridge/include/soc/southbridge.h
+++ b/src/soc/amd/stoneyridge/include/soc/southbridge.h
@@ -24,6 +24,7 @@
#include <device/pci_def.h>
#include <soc/iomap.h>
#include "chip.h"
+#include <rules.h>
/* PSP at D8F0 */
#define PSP_MAILBOX_BAR PCI_BASE_ADDRESS_4 /* BKDG: "BAR3" */
@@ -265,7 +266,6 @@
#define XHCI_PM_INDIRECT_INDEX 0x48
#define XHCI_PM_INDIRECT_DATA 0x4C
#define XHCI_OVER_CURRENT_CONTROL 0x30
-
#define EHCI_OVER_CURRENT_CONTROL 0x70
#define USB_OC0 0
@@ -286,6 +286,20 @@
#define WIDEIO_RANGE_ERROR -1
#define TOTAL_WIDEIO_PORTS 3
+#define AMD_GPIO_MUX_MASK 0x03
+
+#if ENV_BOOTBLOCK
+#define GPIO_TABLE_BOOTBLOCK 1
+#else
+#define GPIO_TABLE_BOOTBLOCK 0
+#endif
+#define STR_GPIO_STAGE ENV_STRING
+
+struct soc_amd_stoneyridge_gpio {
+ uint8_t gpio;
+ uint8_t function;
+ uint8_t control;
+};
void sb_enable_rom(void);
void configure_stoneyridge_uart(void);
@@ -331,6 +345,20 @@ void xhci_pm_write32(uint8_t reg, uint32_t value);
uint32_t xhci_pm_read32(uint8_t reg);
void bootblock_fch_early_init(void);
/**
+ * @brief get table and table size to program GPIO
+ *
+ * @param size = pointer to variable where to return table size
+ *
+ * @return pointer to the desired table
+ */
+const struct soc_amd_stoneyridge_gpio *board_get_gpio(size_t *size);
+/**
+ * @brief program a particular set of GPIO
+ *
+ * @return none
+ */
+void sb_program_gpio(void);
+/**
* @brief Find the size of a particular wide IO
*
* @param index = index of desired wide IO
diff --git a/src/soc/amd/stoneyridge/southbridge.c b/src/soc/amd/stoneyridge/southbridge.c
index 0af774bbf6..46906d09ab 100644
--- a/src/soc/amd/stoneyridge/southbridge.c
+++ b/src/soc/amd/stoneyridge/southbridge.c
@@ -155,6 +155,32 @@ const struct irq_idx_name *sb_get_apic_reg_association(size_t *size)
return irq_association;
}
+void sb_program_gpio(void)
+{
+ void *tmp_ptr;
+ const struct soc_amd_stoneyridge_gpio *gpio_ptr;
+ size_t size;
+ uint8_t control, mux, index;
+
+ printk(BIOS_SPEW, "GPIO programming stage %s\n", STR_GPIO_STAGE);
+ gpio_ptr = board_get_gpio(&size);
+ for (index = 0; index < size; index++) {
+ mux = gpio_ptr[index].function;
+ control = gpio_ptr[index].control;
+ tmp_ptr = (void *)(gpio_ptr[index].gpio + AMD_GPIO_MUX);
+ write8(tmp_ptr, mux & AMD_GPIO_MUX_MASK);
+
+ /*
+ * Get the address of AMD_GPIO_CONTROL (dword) relative
+ * to the desired pin and program bits 16-23.
+ */
+ tmp_ptr = (void *)(gpio_ptr[index].gpio * sizeof(uint32_t) +
+ AMD_GPIO_CONTROL + 2);
+ write8(tmp_ptr, control);
+ }
+ printk(BIOS_SPEW, "End GPIO programming\n");
+}
+
/**
* @brief Find the size of a particular wide IO
*