Hi.
it's a rfc
Best Regards,
J.
On 22:11 Tue 12 Feb , Jean-Christophe PLAGNIOL-VILLARD wrote:
> the dtb is at 0x1000
>
> if no dtb present use C code device
>
> kepp in C the timer/gpio/uart
>
> Cc: Rob Herring <rob.herring@xxxxxxxxxxx>
> Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@xxxxxxxxxxxx>
> ---
> arch/arm/boards/highbank/env/bin/init_board | 7 +++++
> arch/arm/boards/highbank/init.c | 44 ++++++++++++++++++++++++---
> 2 files changed, 47 insertions(+), 4 deletions(-)
> create mode 100644 arch/arm/boards/highbank/env/bin/init_board
>
> diff --git a/arch/arm/boards/highbank/env/bin/init_board b/arch/arm/boards/highbank/env/bin/init_board
> new file mode 100644
> index 0000000..610db15
> --- /dev/null
> +++ b/arch/arm/boards/highbank/env/bin/init_board
> @@ -0,0 +1,7 @@
> +#!/bin/sh
> +
> +if [ -e /dev/dtb ]
> +then
> + oftree -l /dev/dtb
> + oftree -p
> +fi
> diff --git a/arch/arm/boards/highbank/init.c b/arch/arm/boards/highbank/init.c
> index 9fb7986..a01db5b 100644
> --- a/arch/arm/boards/highbank/init.c
> +++ b/arch/arm/boards/highbank/init.c
> @@ -15,20 +15,56 @@
> #include <sizes.h>
> #include <io.h>
>
> +struct fdt_header *fdt = NULL;
> +
> static int highbank_mem_init(void)
> {
> + struct device_node *np;
> + u32 reg[2];
> + int ret;
> +
> + /* load by the firmware at 0x1000 */
> + fdt = IOMEM(0x1000);
> +
> + ret = of_unflatten_dtb(fdt);
> + if (ret) {
> + pr_warn("no dtb found at 0x1000 use default configuration\n");
> + fdt = NULL;
> + goto not_found;
> + }
> +
> + np = of_find_node_by_path("/memory");
> + if (!np) {
> + pr_warn("no memory node use default configuration\n");
> + goto not_found;
> + }
> +
> + ret = of_property_read_u32_array(np, "reg", reg, 2);
> + if (ret) {
> + pr_warn("memory node: no reg property use default configuration\n");
> + goto not_found;
> + }
> +
> + pr_info("highbank: dtb probed mem_size = 0x%x\n", reg[1]);
> +
> + highbank_add_ddram(reg[1]);
> +
> +not_found:
> //highbank_add_ddram(4089 << 20);
> highbank_add_ddram(SZ_1G);
> -
> return 0;
> }
> mem_initcall(highbank_mem_init);
>
> static int highbank_devices_init(void)
> {
> - highbank_register_ahci();
> - highbank_register_xgmac(0);
> - highbank_register_xgmac(1);
> + if (!fdt) {
> + highbank_register_ahci();
> + highbank_register_xgmac(0);
> + highbank_register_xgmac(1);
> + } else {
> + devfs_add_partition("ram1", 0x1000, SZ_64K, DEVFS_PARTITION_FIXED, "dtb");
> + }
>
> armlinux_set_bootparams((void *)(0x00000100));
>
> --
> 1.7.10.4
>
_______________________________________________
barebox mailing list
barebox@xxxxxxxxxxxxxxxxxxx
http://lists.infradead.org/mailman/listinfo/barebox
