From bc2722b0f39a82113e32d336b6cddd60a8f6a85e Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Beno=C3=AEt=20Monin?= Date: Mon, 23 Feb 2026 16:54:47 +0200 Subject: [PATCH] platform: generic: mips p8700: Add match data for CM info MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Introduce a structure p8700_cm_info holding the number of coherence managers and their base addresses found in a particular SoC. Declare a global pointer to the structure that is set in mips_p8700_platform_init(), based on the match data of the platform compatible. For the match data of the MIPS P8700, a single coherence manager with a base address of 0x16100000 is declared, identical to what is found in mips/board.h. For now, access to the coherence manager register is still based on the hard-coded values defined in mips/board.h. Signed-off-by: Benoît Monin Signed-off-by: Vladimir Kondratiev Reviewed-by: Anup Patel Link: https://lore.kernel.org/r/20260223-for-upstream-eyeq7h-v3-8-621d004d1a21@mobileye.com Signed-off-by: Anup Patel --- platform/generic/include/mips/p8700.h | 12 ++++++++++++ platform/generic/mips/p8700.c | 21 ++++++++++++++++++++- 2 files changed, 32 insertions(+), 1 deletion(-) diff --git a/platform/generic/include/mips/p8700.h b/platform/generic/include/mips/p8700.h index 6644e91d..8281e5e6 100644 --- a/platform/generic/include/mips/p8700.h +++ b/platform/generic/include/mips/p8700.h @@ -10,6 +10,18 @@ #include +/** Coherence manager information + * + * @num_cm: Number of coherence manager + * @gcr_base: Array of base address of the CM + */ +struct p8700_cm_info { + unsigned int num_cm; + unsigned long *gcr_base; +}; + +extern const struct p8700_cm_info *p8700_cm_info; + /* PMA */ #define CSR_MIPSPMACFG0 0x7e0 #define CSR_MIPSPMACFG1 0x7e1 diff --git a/platform/generic/mips/p8700.c b/platform/generic/mips/p8700.c index 50d33cac..75e19416 100644 --- a/platform/generic/mips/p8700.c +++ b/platform/generic/mips/p8700.c @@ -17,6 +17,8 @@ #include #include +const struct p8700_cm_info *p8700_cm_info; + extern void mips_warm_boot(void); #define MMIO_BASE 0x00000000 #define MMIO_SIZE 0x80000000 @@ -287,6 +289,14 @@ static int mips_p8700_nascent_init(void) static int mips_p8700_platform_init(const void *fdt, int nodeoff, const struct fdt_match *match) { + const struct p8700_cm_info *data = match->data; + + if (!data) { + sbi_printf("Missing CM info for %s\n", match->compatible); + return SBI_EINVAL; + } + + p8700_cm_info = data; generic_platform_ops.early_init = mips_p8700_early_init; generic_platform_ops.final_init = mips_p8700_final_init; generic_platform_ops.nascent_init = mips_p8700_nascent_init; @@ -295,8 +305,17 @@ static int mips_p8700_platform_init(const void *fdt, int nodeoff, const struct f return 0; } +static unsigned long mips_p8700_gcr_base[] = { + 0x16100000, +}; + +static struct p8700_cm_info mips_p8700_cm_info = { + .num_cm = array_size(mips_p8700_gcr_base), + .gcr_base = mips_p8700_gcr_base, +}; + static const struct fdt_match mips_p8700_match[] = { - { .compatible = "mips,p8700" }, + { .compatible = "mips,p8700", .data = &mips_p8700_cm_info }, { }, };