[PATCH v3 3/3] arm: mvebu: Initial ESPRESSOBin-Ultra board support
Pali Rohár
pali at kernel.org
Fri Aug 13 11:27:20 CEST 2021
On Friday 13 August 2021 01:39:38 Luka Kovacic wrote:
> Add initial support for the ESPRESSOBin-Ultra board from Globalscale
> Technologies, Inc.
>
> The board is based on the 64-bit dual-core Marvell Armada 3720 SoC.
> Peripherals:
> - 5 Gigabit Ethernet ports (WAN has PoE, up to 30W, Topaz 6341 switch)
> - RTC clock (PCF8563)
> - USB 3.0 port
> - USB 2.0 port
> - 4x LED
> - UART over Micro-USB
> - M.2 slot (2280)
> - Mini PCI-E slot
>
> Additionally, automatic import of the Marvell hw_info parameters is
> enabled via the recently added mac command for A37XX platforms.
> The parameters stored in Marvell hw_info are usually the board serial
> number and MAC addresses.
>
> Signed-off-by: Luka Kovacic <luka.kovacic at sartura.hr>
> Cc: Luka Perkov <luka.perkov at sartura.hr>
> Cc: Robert Marko <robert.marko at sartura.hr>
> ---
> arch/arm/dts/Makefile | 1 +
> .../arm/dts/armada-3720-espressobin-ultra.dts | 114 ++++++++++
> arch/arm/dts/armada-3720-espressobin.dts | 199 +----------------
> arch/arm/dts/armada-3720-espressobin.dtsi | 210 ++++++++++++++++++
> board/Marvell/mvebu_armada-37xx/MAINTAINERS | 8 +
> board/Marvell/mvebu_armada-37xx/board.c | 92 +++++++-
> .../mvebu_espressobin-ultra-88f3720_defconfig | 93 ++++++++
> 7 files changed, 514 insertions(+), 203 deletions(-)
> create mode 100644 arch/arm/dts/armada-3720-espressobin-ultra.dts
> create mode 100644 arch/arm/dts/armada-3720-espressobin.dtsi
> create mode 100644 configs/mvebu_espressobin-ultra-88f3720_defconfig
...
> diff --git a/board/Marvell/mvebu_armada-37xx/board.c b/board/Marvell/mvebu_armada-37xx/board.c
> index 2de9c2ac17..21c1eb7b22 100644
> --- a/board/Marvell/mvebu_armada-37xx/board.c
> +++ b/board/Marvell/mvebu_armada-37xx/board.c
> @@ -11,6 +11,7 @@
> #include <i2c.h>
> #include <init.h>
> #include <mmc.h>
> +#include <miiphy.h>
> #include <phy.h>
> #include <asm/global_data.h>
> #include <asm/io.h>
> @@ -55,6 +56,15 @@ DECLARE_GLOBAL_DATA_PTR;
> #define MVEBU_G2_SMI_PHY_CMD_REG (24)
> #define MVEBU_G2_SMI_PHY_DATA_REG (25)
>
> +/* Marvell 88E1512 */
> +#define MII_MARVELL_PHY_PAGE 22
> +
> +#define MV88E1512_GENERAL_CTRL 20
> +#define MV88E1512_MODE_SGMII 1
> +#define MV88E1512_RESET_OFFS 15
> +
> +#define ULTRA_MV88E1512_PHYADDR 0x1
> +
> /*
> * Memory Controller Registers
> *
> @@ -282,12 +292,68 @@ static int mii_multi_chip_mode_write(struct mii_dev *bus, int dev_smi_addr,
> return 0;
> }
>
> -/* Bring-up board-specific network stuff */
> -int board_network_enable(struct mii_dev *bus)
> +void force_phy_88e1512_sgmii_to_copper(u16 devaddr)
> {
> - if (!of_machine_is_compatible("globalscale,espressobin"))
> - return 0;
> + const char *name;
> + u16 reg;
> +
> + name = miiphy_get_current_dev();
> + if (name) {
It is possible that phy is not available? As you are calling code below
only in case name is not-NULL.
> + /* SGMII-to-Copper mode initialization */
> +
> + /* Select page 18 */
> + miiphy_write(name, devaddr, MII_MARVELL_PHY_PAGE, 0x12);
> + /* In reg 20, write MODE[2:0] = 0x1 (SGMII to Copper) */
> + miiphy_read(name, devaddr, MV88E1512_GENERAL_CTRL, ®);
> + reg &= ~0x7;
> + reg |= MV88E1512_MODE_SGMII;
> + miiphy_write(name, devaddr, MV88E1512_GENERAL_CTRL, reg);
> + /* PHY reset is necessary after changing MODE[2:0] */
> + miiphy_read(name, devaddr, MV88E1512_GENERAL_CTRL, ®);
> + reg |= 1 << MV88E1512_RESET_OFFS;
> + miiphy_write(name, devaddr, MV88E1512_GENERAL_CTRL, reg);
> + /* Reset page selection */
> + miiphy_write(name, devaddr, MII_MARVELL_PHY_PAGE, 0);
> + udelay(100);
> + }
> +}
> +
> +int board_network_enable_espressobin_ultra(struct mii_dev *bus)
> +{
> + int i;
> + /* Setup 88E1512 SGMII-to-Copper mode */
> + force_phy_88e1512_sgmii_to_copper(ULTRA_MV88E1512_PHYADDR);
>
> + /*
> + * FIXME: remove this code once Topaz driver gets available
> + * A3720 ESPRESSObin Ultra Board Only
> + * Configure Topaz switch (88E6341)
> + * Set port 1,2,3,4,5 to forwarding Mode (through Switch Port registers)
> + */
> + for (i = 0; i <= 5; i++) {
> + mii_multi_chip_mode_write(bus, 3, MVEBU_PORT_CTRL_SMI_ADDR(i),
> + MVEBU_SW_PORT_CTRL_REG,
> + i == 5 ? 0x7c : 0x7f);
Why port 5 has different settings?
> + }
> +
> + /* RGMII Delay on Port 0 (CPU port), force link to 1000Mbps */
> + mii_multi_chip_mode_write(bus, 3, MVEBU_PORT_CTRL_SMI_ADDR(0),
> + MVEBU_SW_LINK_CTRL_REG, 0xe002);
> +
> + /* Power up PHY 1, 2, 3, 4, 5 (through Global 2 registers) */
> + mii_multi_chip_mode_write(bus, 3, MVEBU_SW_G2_SMI_ADDR,
> + MVEBU_G2_SMI_PHY_DATA_REG, 0x1140);
> + for (i = 1; i <= 5; i++) {
> + mii_multi_chip_mode_write(bus, 3, MVEBU_SW_G2_SMI_ADDR,
> + MVEBU_G2_SMI_PHY_CMD_REG, 0x9400 +
> + (MVEBU_PORT_CTRL_SMI_ADDR(i) << 5));
> + }
It looks like that by copying board_network_enable_espressobin_ultra()
function from Marvell U-Boot instead of using code which is in mainline
function board_network_enable() for Espressobin, you are introducing a
security hole, which is in Marvell U-Boot and which was fixed in
mainline U-Boot for all supported Espressobin boards (see commit
48f2c8a37f700859a7004dce5adb116597a45700).
I would really suggest to not blindly copy old code from Marvell into
mainline U-Boot, as here we have fixed lot of issues.
> + return 0;
> +}
> +
> +int board_network_enable_espressobin(struct mii_dev *bus)
> +{
> /*
> * FIXME: remove this code once Topaz driver gets available
> * A3720 Community Board Only
> @@ -328,6 +394,16 @@ int board_network_enable(struct mii_dev *bus)
> return 0;
> }
>
> +/* Bring-up the board-specific networking */
> +int board_network_enable(struct mii_dev *bus)
> +{
> + if (of_machine_is_compatible("globalscale,espressobin"))
> + return board_network_enable_espressobin(bus);
> + if (of_machine_is_compatible("globalscale,espressobin-ultra"))
> + return board_network_enable_espressobin_ultra(bus);
> + return 0;
> +}
> +
> #if defined(CONFIG_OF_BOARD_SETUP) && defined(CONFIG_ENV_IS_IN_SPI_FLASH)
> int ft_board_setup(void *blob, struct bd_info *bd)
> {
> @@ -336,8 +412,12 @@ int ft_board_setup(void *blob, struct bd_info *bd)
> int parts_off;
> int part_off;
>
> - /* Fill SPI MTD partitions for Linux kernel on Espressobin */
> - if (!of_machine_is_compatible("globalscale,espressobin"))
> + /*
> + * Fill SPI MTD partitions for the Linux kernel on ESPRESSOBin and
> + * ESPRESSOBin Ultra boards.
> + */
> + if (!of_machine_is_compatible("globalscale,espressobin") &&
> + !of_machine_is_compatible("globalscale,espressobin-ultra"))
> return 0;
According to kernel DTS file, it looks like that Espressobin Ultra has
different MTD partitions as other variants... Therefore Ultra needs
adjustments in this code.
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/arch/arm64/boot/dts/marvell/armada-3720-espressobin-ultra.dts?h=v5.13#n78
>
> spi_off = fdt_node_offset_by_compatible(blob, -1, "jedec,spi-nor");
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