starfive-tech/u-boot.git/common/fdt_support.c, branch rtthread_AMP

fdt_support: Add kernel-doc for fdt_fixup_memory_banks()

2021-08-26T06:08:11+00:00

Add kernel-doc description for fdt_fixup_memory_banks() because it is implemented in one specific way and this information should be available for others to decide if their SoC conforms to it. If you don't want U-Boot to update your memory DT layout please disable CONFIG_ARCH_FIXUP_FDT_MEMORY. Signed-off-by: Michal Simek Reviewed-by: Simon Glass

global: Convert simple_strtoul() with hex to hextoul()

2021-08-02T17:32:14+00:00

It is a pain to have to specify the value 16 in each call. Add a new hextoul() function and update the code to use it. Add a proper comment to simple_strtoul() while we are here. Signed-off-by: Simon Glass

spl: fit: Also record architecture in /fit-images

2021-06-23T07:48:36+00:00

On ARM64 secure OS can run as 64bit or 32bit that's why it is necessary to record information about architecture that other code can read it and properly pass it to TF-A and start in 64bit or 32bit mode. Signed-off-by: Michal Simek Reviewed-by: Simon Glass

fdt_support: move fdt_valid from cmd_fdt.c to fdt_support.c

2021-05-13T11:19:34+00:00

Move the fdt_valid function to fdt_support. This changes allow to be able to test the validity of a devicetree in other c files. Update code syntax. Signed-off-by: Kory Maincent Reviewed-by: Tom Rini Reviewed-by: Maxime Ripard

Revert "fdt: translate address if #size-cells = <0>"

2021-05-12T10:57:57+00:00

This reverts commit d64b9cdcd475eb7f07b49741ded87e24dae4a5fc. As pointed by [1] and [2], the reverted patch made every DT 'reg' property translatable. What the patch was trying to fix was fixed in a different way from previously submitted patches which instead of correcting the generic address translation function fixed the issue with appropriate platform code. [1] https://patchwork.ozlabs.org/project/uboot/patch/1614324949-61314-1-git-send-email-bmeng.cn@gmail.com/ [2] https://lore.kernel.org/linux-clk/20210402192054.7934-1-dariobin@libero.it/T/ Signed-off-by: Dario Binacchi Reviewed-by: Bin Meng

fdt_support.c: Allow late kernel cmdline modification

2021-05-04T16:52:46+00:00

By declaring board-specific board_fdt_chosen_bootargs() the kernel command line arguments can be adjusted before injecting to flat dt chosen node. Signed-off-by: Niko Mauno

common: fdt_support: Support special case of PCI address in fdt_read_prop()

2021-03-05T04:55:42+00:00

At present fdt_read_prop() can only handle 1 or 2 cells. It is called by fdt_read_range() which may be used to read PCI address from for a PCI bus node where the number of PCI address cell is 3. The property is an array of: { } When trying to read from a PCI bus node using fdt_read_prop(), as the codes below: /* Read */ if (child_addr) { r = fdt_read_prop(ranges, ranges_len, cell, child_addr, acells); if (r) return r; } it will fail, because the PCI child address is made up of 3 cells but fdt_read_prop() cannot handle it. We advance the cell offset by 1 so that the can be correctly read. This adds the special handling of such case. Signed-off-by: Bin Meng Reviewed-by: Simon Glass Reviewed-by: Priyanka Jain

fdt/sunxi: Remove OF_STDOUT_PATH

2021-02-19T23:29:47+00:00

OF_STDOUT_PATH was meant to hold the devicetree path to the serial console, to be put into the linux,stdout-path property of the chosen node. The only user of that was sunxi, and it was actually wrong for years there: the paths hardcoded in sunxi_common.h were not matching the DTs, evident by the leading 0's in nodenames, which have been removed years ago. On top of that, "linux,stdout-path" is now deprecated for a while (Linux commit 2a9d832cc9aae from November 2014), and also all modern DTs (including those included in U-Boot) carry a "stdout-path" property already. So remove the stanza from sunxi_common.h, and, since this was the last user, also remove the associated bits from the rest of U-Boot. Signed-off-by: Andre Przywara Reviewed-by: Tom Rini Reviewed-by: Simon Glass

dm: Introduce xxx_get_dma_range()

2021-02-18T10:56:25+00:00

Add the following functions to get a specific device's DMA ranges: - dev_get_dma_range() - ofnode_get_dma_range() - of_get_dma_range() - fdt_get_dma_range() They are specially useful in oder to be able validate a physical address space range into a bus's and to convert addresses from and to address spaces. Signed-off-by: Nicolas Saenz Julienne Reviewed-by: Simon Glass Tested-by: Peter Robinson Signed-off-by: Matthias Brugger

fdt: translate address if #size-cells = <0>

2021-01-12T05:28:05+00:00

The __of_translate_address routine translates an address from the device tree into a CPU physical address. A note in the description of the routine explains that the crossing of any level with since inherited from IBM. This does not happen for Texas Instruments, or at least for the beaglebone device tree. Without this patch, in fact, the translation into physical addresses of the registers contained in the am33xx-clocks.dtsi nodes would not be possible. They all have a parent with #size-cells = <0>. The CONFIG_OF_TRANSLATE_ZERO_SIZE_CELLS symbol makes translation possible even in the case of crossing levels with #size-cells = <0>. The patch acts conservatively on address translation, except for removing a check within the of_translate_one function in the drivers/core/of_addr.c file: + ranges = of_get_property(parent, rprop, &rlen); - if (ranges == NULL && !of_empty_ranges_quirk(parent)) { - debug("no ranges; cannot translate\n"); - return 1; - } if (ranges == NULL || rlen == 0) { offset = of_read_number(addr, na); memset(addr, 0, pna * 4); debug("empty ranges; 1:1 translation\n"); There are two reasons: 1 The function of_empty_ranges_quirk always returns false, invalidating the following if statement in case of null ranges. Therefore one of the two checks is useless. 2 The implementation of the of_translate_one function found in the common/fdt_support.c file has removed this check while keeping the one about the 1:1 translation. The patch adds a test and modifies a check for the correctness of an address in the case of enabling translation also for zero size cells. The added test checks translations of addresses generated by nodes of a device tree similar to those you can find in the files am33xx.dtsi and am33xx-clocks.dtsi for which the patch was created. The patch was also tested on a beaglebone black board. The addresses generated for the registers of the loaded drivers are those specified by the AM335x reference manual. Signed-off-by: Dario Binacchi Tested-by: Dario Binacchi Reviewed-by: Simon Glass