u-boot.git/arch/powerpc/cpu, branch v2026.01

lmb: replace lmb_reserve() and lmb_alloc_addr() API's

2025-06-25T15:50:37Z

There currently are multiple allocation API's in the LMB module. There are a couple of API's for allocating memory(lmb_alloc() and lmb_alloc_base()), and then there are two for requesting a reservation for a particular memory region (lmb_reserve() and lmb_alloc_addr()). Introduce a single API lmb_alloc_mem() which will cater to all types of allocation requests and replace lmb_reserve() and lmb_alloc_addr() with the new API. Moreover, the lmb_reserve() API is pretty similar to the lmb_alloc_addr() API, with the one difference being that the lmb_reserve() API allows for reserving any address passed to it -- the address need not be part of the LMB memory map. The lmb_alloc_addr() does check that the address being requested is actually part of the LMB memory map. There is no need to support reserving memory regions which are outside the LMB memory map. Remove the lmb_reserve() API functionality and use the functionality provided by lmb_alloc_addr() instead. The lmb_alloc_addr() will check if the requested address is part of the LMB memory map and return an error if not. Signed-off-by: Sughosh Ganu Acked-by: Ilias Apalodimas

include/mmc.h: Audit include list

2025-06-02T23:26:16Z

This file does not need nor so remove them. This exposes however that a number of other files had been relying on this implicit include for so add that where needed. Signed-off-by: Tom Rini

Merge patch series "Misc. PowerPC MPC83xx fixes/cleanups"

2024-12-30T21:55:33Z

J. Neuschäfer says: This patchset contains a few small fixes/cleanups for the MPC83xx platform. Link: https://lore.kernel.org/r/20241220-mpc83xx-misc-v2-0-ff4c17ee5fa4@posteo.net

powerpc: mpc83xx: Use defined constant for SPCR[TBEN]

2024-12-30T21:55:27Z

To increase readability, use the defined constant instead of specifying SPCR[TBEN] as a number. Reviewed-by: Sinan Akman Signed-off-by: J. Neuschäfer

powerpc: mpc83xx: Allow including initreg.h into multiple files

2024-12-30T21:55:27Z

Globals defined in headers can result in multiple-definition errors while linking, if they are visible beyond the current translation unit. This hasn't been a problem for initreg.h so far, but would become a problem in the next patch, where I use a constant from initreg.h in a second C file. Reviewed-by: Sinan Akman Signed-off-by: J. Neuschäfer

Merge patch series "powerpc: Fix and enforce distinction between immediates and registers"

2024-12-30T21:55:11Z

J. Neuschäfer says: This patchset changes the definition r0 etc. to %r0, so that the assembler can check that registers are only used where expected, and fixes the fallout. Link: https://lore.kernel.org/r/20241212-gpr-checks-v1-0-8c084c5fc0b6@posteo.net

powerpc: Fix 0 vs. r0 confusion in X/D-form instructions

2024-12-30T21:55:07Z

Instructions such as dcbi are in the X-form; they have RA and RB fields and the effective address (EA) is computed as (RA|0)+(RB). In words, this means that if RA is zero, the left-hand side of the addition is zero, otherwise the corresponding GPR is used. r0 can never be used on the left-hand side of a X-form instruction. For D-form instructions such as addis, the Power ISA illustrates this in the instruction pseudo-code: if RA = 0 then RT <- EXTS(SI || 0x0000) else RT <- (RA) + EXIS(SI || 0x0000) In all of these cases, RA=0 indicates the value zero, not register r0. I verified with gazerbeam_defconfig (MPC83xx) and qemu-ppce500_defconfig (MPC85xx) that this patch results in the same machine code. Signed-off-by: J. Neuschäfer

lmb: Remove lmb_reserve_flags()

2024-12-30T19:21:55Z

lmb_reserve() is just calling lmb_reserve_flags() with LMB_NONE. There's not much we gain from this abstraction. So let's remove the latter, add the flags argument to lmb_reserve() and make the code a bit easier to follow. Reviewed-by: Tom Rini Reviewed-by: Sam Protsenko Tested-by: Sam Protsenko Signed-off-by: Ilias Apalodimas

arch: Use CONFIG_XPL_BUILD instead of CONFIG_SPL_BUILD

2024-10-11T17:44:47Z

Use the new symbol to refer to any 'SPL' build, including TPL and VPL Signed-off-by: Simon Glass

ppc: lmb: move arch specific lmb reservations to arch_misc_init()

2024-09-03T20:08:50Z

All the current function definitions of arch_lmb_reserve() are doing the same thing -- reserve the U-Boot memory region. The powerpc(ppc) architecture, in addition, is making some LMB reservations for the bootm related image loading. Move these ppc specific reservations to the arch_misc_init() function. This allows to move the U-Boot memory region reservation to a different function, and remove arch_lmb_reserve() in a subsequent commit. Signed-off-by: Sughosh Ganu Reviewed-by: Simon Glass