u-boot.git/include/asm-generic, branch v2024.01

bloblist: Support initing from multiple places

2023-10-06T18:38:13+00:00

Typically the bloblist is set up after the devicetree is present. This
makes sense because bloblist may use malloc() to allocate the space it
needs.

However sometimes the devicetree itself may be present in the bloblist.
In that case it is at a known location in memory so we can init the
bloblist very early, before devicetree.

Add a flag to indicate whether the bloblist has been inited. Add a
function to init it only if needed. Use that in the init sequence.

Signed-off-by: Simon Glass

spl: Avoid an #ifdef when printing gd->malloc_ptr

2023-10-06T18:38:12+00:00

Use an accessor in the header file to avoid this.

Signed-off-by: Simon Glass

spl: Use SYS_MALLOC_F instead of SYS_MALLOC_F_LEN

2023-10-06T18:38:12+00:00

Use the new SPL/TPL/VPL_SYS_MALLOC_F symbols to determine whether the
malloc pool exists.

Signed-off-by: Simon Glass 
Reviewed-by: Sean Anderson

Record the position of the SMBIOS tables

2023-09-21T22:05:40+00:00

Remember where these end up so that we can pass this information on to
the EFI layer.

Signed-off-by: Simon Glass 
Reviewed-by: Bin Meng

dm: core: Allow marking driver model as dead

2023-09-21T22:03:46+00:00

On x86 devices we use CAR (Cache-As-RAM) to hold the malloc() region in
SPL, since SDRAM is not set up yet. This means that driver model stores
its tables in this region.

When preparing to jump from SPL to U-Boot proper, we must disable CAR, so
that the CPU can uses the caches normally. This means that driver model
tables become inaccessible. From there until we jump to U-Boot proper, we
must avoid using driver model.

This is only a problem on boards which operate this way, for example
chromebook_link64

Add a flag to indicate that driver model is dead and should not be used.
It can be used in SPL to avoid hanging the machine.

Signed-off-by: Simon Glass 
Reviewed-by: Bin Meng

x86: cpu: i386: cpu: only set pci_ram_top if CONFIG_IS_ENABLED(PCI)

2023-09-21T22:03:46+00:00

This avoids an error when ifdef CONFIG_PCI is changed to
if CONFIG_IS_ENABLED(PCI)

Signed-off-by: Troy Kisky 
[Rebased on top of u-boot/master]
Signed-off-by: Bin Meng

arm: Use builtins for ffs/fls

2023-08-17T20:39:20+00:00

Since ARMv5, the clz instruction allows for efficient implementation of
ffs/fls with builtins. Until ARMv7 (with Thumb-2), this instruction is
only available in ARM mode. LTO makes it difficult to force specific
functions to be in ARM mode, as it is effectively a form of very
aggressive inlining. To work around this, fls/ffs are implemented in
assembly for ARMv5 and ARMv6 when compiling U-Boot in Thumb mode.
Overall, this saves around 75 bytes per call.

This code is synced with v5.15 of the Linux kernel.

Signed-off-by: Sean Anderson 
Reviewed-by: Tom Rini

gpio: Use separate bitfield array to indicate GPIO is claimed

2023-08-14T21:55:53+00:00

The current gpio-uclass design uses name field in struct gpio_dev_priv as
an indicator that GPIO is claimed by consumer. This overloads the function
of name field and does not work well for named pins not configured as GPIO
pins.

Introduce separate bitfield array as the claim indicator.

This unbreaks dual-purpose AF and GPIO operation on STM32MP since commit
2c38f7c31806 ("pinctrl: pinctrl_stm32: Populate uc_priv->name[] with pinmux node's name")
where any pin which has already been configured as AF could no longer be
claimed as dual-purpose GPIO. This is important for pins like STM32 MMCI
st,cmd-gpios .

Signed-off-by: Marek Vasut 
Reviewed-by: Simon Glass

treewide: rework linker symbol declarations in sections header

2023-08-09T13:21:42+00:00

1. Convert all linker symbols to char[] type so that we can get the
   corresponding address by calling array name 'var' or its address
   '&var'. In this way, we can avoid some potential issues[1].
2. Remove unused symbol '_TEXT_BASE'. It has been abandoned and has
   not been referenced by any source code.
3. Move '__data_end' to the arch x86's own sections header as it's
   only used by x86 arch.
4. Remove some duplicate declared linker symbols. Now we use the
   standard header file to declare them.

[1] This patch fixes the boot failure on MIPS target. Error log:
SPL: Image overlaps SPL

Fixes: 1b8a1be1a1f1 ("spl: spl_legacy: Fix spl_end address")
Signed-off-by: Shiji Yang 
Reviewed-by: Tom Rini

bdinfo: Show the malloc base with the bdinfo command

2023-07-17T09:12:21+00:00

It is useful to see the base of the malloc region. This is visible when
debugging but not in normal usage.

Add it to the global data so that it can be shown.

Signed-off-by: Simon Glass 
Reviewed-by: Nikhil M Jain 
Reviewed-by: Bin Meng 
Tested-by: Nikhil M Jain