The ARM Juno boards in their -r1 and -r2 variants sport a PCIe controller, which we configure already in board specific code to be ECAM compliant. Hence we can just enable the generic ECAM driver to let U-Boot use PCIe devices.
Add the respective options to the Juno defconfig to enable the PCI framework and the generic ECAM driver, and initialise the driver upon loading U-Boot.
Make some functions in the Juno PCIe init code static on the way.
Signed-off-by: Andre Przywara andre.przywara@arm.com --- board/armltd/vexpress64/pcie.c | 14 +++++++++----- configs/vexpress_aemv8a_juno_defconfig | 5 +++++ 2 files changed, 14 insertions(+), 5 deletions(-)
diff --git a/board/armltd/vexpress64/pcie.c b/board/armltd/vexpress64/pcie.c index 02de58b360..733b190e59 100644 --- a/board/armltd/vexpress64/pcie.c +++ b/board/armltd/vexpress64/pcie.c @@ -72,9 +72,9 @@ JUNO_RESET_STATUS_PHY | \ JUNO_RESET_STATUS_RC)
-void xr3pci_set_atr_entry(unsigned long base, unsigned long src_addr, - unsigned long trsl_addr, int window_size, - int trsl_param) +static void xr3pci_set_atr_entry(unsigned long base, unsigned long src_addr, + unsigned long trsl_addr, int window_size, + int trsl_param) { /* X3PCI_ATR_SRC_ADDR_LOW: - bit 0: enable entry, @@ -94,7 +94,7 @@ void xr3pci_set_atr_entry(unsigned long base, unsigned long src_addr, ((u64)1) << window_size, trsl_param); }
-void xr3pci_setup_atr(void) +static void xr3pci_setup_atr(void) { /* setup PCIe to CPU address translation tables */ unsigned long base = XR3_CONFIG_BASE + XR3PCI_ATR_PCIE_WIN0; @@ -141,7 +141,7 @@ void xr3pci_setup_atr(void) XR3_PCI_MEMSPACE64_SIZE, XR3PCI_ATR_TRSLID_PCIE_MEMORY); }
-void xr3pci_init(void) +static void xr3pci_init(void) { u32 val; int timeout = 200; @@ -193,5 +193,9 @@ void xr3pci_init(void)
void vexpress64_pcie_init(void) { + /* Initialise and configure the PCIe host bridge. */ xr3pci_init(); + + /* Register the now ECAM complaint PCIe host controller with U-Boot. */ + pci_init(); } diff --git a/configs/vexpress_aemv8a_juno_defconfig b/configs/vexpress_aemv8a_juno_defconfig index 49acb34310..4866a0e9d5 100644 --- a/configs/vexpress_aemv8a_juno_defconfig +++ b/configs/vexpress_aemv8a_juno_defconfig @@ -32,6 +32,11 @@ CONFIG_CMD_UBI=y # CONFIG_ISO_PARTITION is not set # CONFIG_EFI_PARTITION is not set CONFIG_OF_BOARD=y +CONFIG_PCI=y +CONFIG_DM_PCI=y +CONFIG_PCIE_ECAM_GENERIC=y +CONFIG_DM_PCI_COMPAT=y +CONFIG_CMD_PCI=y CONFIG_ENV_IS_IN_FLASH=y CONFIG_ENV_ADDR=0xBFC0000 # CONFIG_MMC is not set