diff options
Diffstat (limited to 'src/soc/amd')
| -rw-r--r-- | src/soc/amd/stoneyridge/early_setup.c | 32 |
1 files changed, 24 insertions, 8 deletions
diff --git a/src/soc/amd/stoneyridge/early_setup.c b/src/soc/amd/stoneyridge/early_setup.c index 5166a7f5e8..e5f123a151 100644 --- a/src/soc/amd/stoneyridge/early_setup.c +++ b/src/soc/amd/stoneyridge/early_setup.c @@ -23,31 +23,47 @@ #include <cbmem.h> #include <soc/southbridge.h> #include <soc/pci_devs.h> -#include <Fch/Fch.h> #include <cpu/x86/msr.h> #include <delay.h> +/* vendor includes */ +#include <Porting.h> +#include <AGESA.h> +#include <Fch/Fch.h> + void configure_stoneyridge_uart(void) { - u8 byte; + u8 byte, byte2; + /* Power on the UART and AMBA devices */ byte = read8((void *)ACPI_MMIO_BASE + AOAC_BASE + FCH_AOAC_REG56 + CONFIG_UART_FOR_CONSOLE * 2); - byte |= 1 << 3; + byte |= AOAC_PWR_ON_DEV; write8((void *)ACPI_MMIO_BASE + AOAC_BASE + FCH_AOAC_REG56 + CONFIG_UART_FOR_CONSOLE * 2, byte); + byte = read8((void *)ACPI_MMIO_BASE + AOAC_BASE + FCH_AOAC_REG62); - byte |= 1 << 3; + byte |= AOAC_PWR_ON_DEV; write8((void *)ACPI_MMIO_BASE + AOAC_BASE + FCH_AOAC_REG62, byte); + + /* Set the GPIO mux to UART */ write8((void *)FCH_IOMUXx89_UART0_RTS_L_EGPIO137, 0); write8((void *)FCH_IOMUXx8A_UART0_TXD_EGPIO138, 0); write8((void *)FCH_IOMUXx8E_UART1_RTS_L_EGPIO142, 0); write8((void *)FCH_IOMUXx8F_UART1_TXD_EGPIO143, 0); - udelay(2000); - /* reset UART */ - write8((void *)APU_UART0_BASE + (0x2000 * CONFIG_UART_FOR_CONSOLE) - + 0x88, 0x01); + /* Wait for the UART and AMBA devices to indicate power and clock OK */ + do { + udelay(100); + byte = read8((void *)ACPI_MMIO_BASE + AOAC_BASE + FCH_AOAC_REG57 + + CONFIG_UART_FOR_CONSOLE * 2); + byte &= (A0AC_PWR_RST_STATE | AOAC_RST_CLK_OK_STATE); + byte2 = read8((void *)ACPI_MMIO_BASE + AOAC_BASE + + FCH_AOAC_REG63); + byte2 &= (A0AC_PWR_RST_STATE | AOAC_RST_CLK_OK_STATE); + } while (!((byte == (A0AC_PWR_RST_STATE | AOAC_RST_CLK_OK_STATE)) && + (byte2 == (A0AC_PWR_RST_STATE | AOAC_RST_CLK_OK_STATE)))); + } void sb_pci_port80(void) |