Message ID | 20220104101323.127564-8-apatel@ventanamicro.com |
---|---|
State | Superseded |
Headers | show |
Series | OpenSBI RISC-V AIA Support | expand |
On Tue, Jan 4, 2022 at 2:13 AM Anup Patel <apatel@ventanamicro.com> wrote: > > We should disable IMSIC DT nodes in fdt_fixups() which are not > accessible to the next booting stage based on currently assigned > domain. > > Signed-off-by: Anup Patel <anup.patel@wdc.com> > Signed-off-by: Anup Patel <apatel@ventanamicro.com> > --- > include/sbi_utils/fdt/fdt_fixup.h | 17 ++++++++++++++-- > lib/utils/fdt/fdt_fixup.c | 32 +++++++++++++++++++++++++++++-- > 2 files changed, 45 insertions(+), 4 deletions(-) > > diff --git a/include/sbi_utils/fdt/fdt_fixup.h b/include/sbi_utils/fdt/fdt_fixup.h > index c38e5d9..77575bb 100644 > --- a/include/sbi_utils/fdt/fdt_fixup.h > +++ b/include/sbi_utils/fdt/fdt_fixup.h > @@ -21,6 +21,18 @@ > */ > void fdt_cpu_fixup(void *fdt); > > +/** > + * Fix up the IMSIC nodes in the device tree > + * > + * This routine disables IMSIC nodes which are not accessible to the next > + * booting stage based on currently assigned domain. > + * > + * It is recommended that platform codes call this helper in their final_init() > + * > + * @param fdt: device tree blob > + */ > +void fdt_imsic_fixup(void *fdt); > + > /** > * Fix up the PLIC node in the device tree > * > @@ -64,8 +76,9 @@ int fdt_reserved_memory_nomap_fixup(void *fdt); > * General device tree fix-up > * > * This routine do all required device tree fix-ups for a typical platform. > - * It fixes up the PLIC node and the reserved memory node in the device tree > - * by calling the corresponding helper routines to accomplish the task. > + * It fixes up the PLIC node, IMSIC nodes, and the reserved memory node in > + * the device tree by calling the corresponding helper routines to accomplish > + * the task. > * > * It is recommended that platform codes call this helper in their final_init() > * > diff --git a/lib/utils/fdt/fdt_fixup.c b/lib/utils/fdt/fdt_fixup.c > index ac01ba3..c2460b8 100644 > --- a/lib/utils/fdt/fdt_fixup.c > +++ b/lib/utils/fdt/fdt_fixup.c > @@ -52,6 +52,34 @@ void fdt_cpu_fixup(void *fdt) > } > } > > +static void fdt_domain_based_fixup_one(void *fdt, int nodeoff) > +{ > + int rc; > + uint64_t reg_addr, reg_size; > + struct sbi_domain *dom = sbi_domain_thishart_ptr(); > + > + rc = fdt_get_node_addr_size(fdt, nodeoff, 0, ®_addr, ®_size); > + if (rc < 0 || !reg_addr || !reg_size) > + return; > + > + if (!sbi_domain_check_addr(dom, reg_addr, dom->next_mode, > + SBI_DOMAIN_READ | SBI_DOMAIN_WRITE)) { > + rc = fdt_open_into(fdt, fdt, fdt_totalsize(fdt) + 32); > + if (rc < 0) > + return; > + fdt_setprop_string(fdt, nodeoff, "status", "disabled"); > + } > +} > + This should be in a separate patch as it is a generic function and doesn't match the commit text. > +void fdt_imsic_fixup(void *fdt) > +{ > + int noff = 0; > + > + while ((noff = fdt_node_offset_by_compatible(fdt, noff, > + "riscv,imsics")) >= 0) > + fdt_domain_based_fixup_one(fdt, noff); > +} > + > void fdt_plic_fixup(void *fdt) > { > u32 *cells; > @@ -261,10 +289,10 @@ int fdt_reserved_memory_nomap_fixup(void *fdt) > > void fdt_fixups(void *fdt) > { > + fdt_imsic_fixup(fdt); > + > fdt_plic_fixup(fdt); > > fdt_reserved_memory_fixup(fdt); > fdt_pmu_fixup(fdt); > } > - > - > -- > 2.25.1 > Otherwise, LGTM. Reviewed-by: Atish Patra <atishp@rivosinc.com>
On Tue, Feb 8, 2022 at 2:43 PM Atish Patra <atishp@atishpatra.org> wrote: > > On Tue, Jan 4, 2022 at 2:13 AM Anup Patel <apatel@ventanamicro.com> wrote: > > > > We should disable IMSIC DT nodes in fdt_fixups() which are not > > accessible to the next booting stage based on currently assigned > > domain. > > > > Signed-off-by: Anup Patel <anup.patel@wdc.com> > > Signed-off-by: Anup Patel <apatel@ventanamicro.com> > > --- > > include/sbi_utils/fdt/fdt_fixup.h | 17 ++++++++++++++-- > > lib/utils/fdt/fdt_fixup.c | 32 +++++++++++++++++++++++++++++-- > > 2 files changed, 45 insertions(+), 4 deletions(-) > > > > diff --git a/include/sbi_utils/fdt/fdt_fixup.h b/include/sbi_utils/fdt/fdt_fixup.h > > index c38e5d9..77575bb 100644 > > --- a/include/sbi_utils/fdt/fdt_fixup.h > > +++ b/include/sbi_utils/fdt/fdt_fixup.h > > @@ -21,6 +21,18 @@ > > */ > > void fdt_cpu_fixup(void *fdt); > > > > +/** > > + * Fix up the IMSIC nodes in the device tree > > + * > > + * This routine disables IMSIC nodes which are not accessible to the next > > + * booting stage based on currently assigned domain. > > + * > > + * It is recommended that platform codes call this helper in their final_init() > > + * > > + * @param fdt: device tree blob > > + */ > > +void fdt_imsic_fixup(void *fdt); > > + > > /** > > * Fix up the PLIC node in the device tree > > * > > @@ -64,8 +76,9 @@ int fdt_reserved_memory_nomap_fixup(void *fdt); > > * General device tree fix-up > > * > > * This routine do all required device tree fix-ups for a typical platform. > > - * It fixes up the PLIC node and the reserved memory node in the device tree > > - * by calling the corresponding helper routines to accomplish the task. > > + * It fixes up the PLIC node, IMSIC nodes, and the reserved memory node in > > + * the device tree by calling the corresponding helper routines to accomplish > > + * the task. > > * > > * It is recommended that platform codes call this helper in their final_init() > > * > > diff --git a/lib/utils/fdt/fdt_fixup.c b/lib/utils/fdt/fdt_fixup.c > > index ac01ba3..c2460b8 100644 > > --- a/lib/utils/fdt/fdt_fixup.c > > +++ b/lib/utils/fdt/fdt_fixup.c > > @@ -52,6 +52,34 @@ void fdt_cpu_fixup(void *fdt) > > } > > } > > > > +static void fdt_domain_based_fixup_one(void *fdt, int nodeoff) > > +{ > > + int rc; > > + uint64_t reg_addr, reg_size; > > + struct sbi_domain *dom = sbi_domain_thishart_ptr(); > > + > > + rc = fdt_get_node_addr_size(fdt, nodeoff, 0, ®_addr, ®_size); > > + if (rc < 0 || !reg_addr || !reg_size) > > + return; > > + > > + if (!sbi_domain_check_addr(dom, reg_addr, dom->next_mode, > > + SBI_DOMAIN_READ | SBI_DOMAIN_WRITE)) { > > + rc = fdt_open_into(fdt, fdt, fdt_totalsize(fdt) + 32); > > + if (rc < 0) > > + return; > > + fdt_setprop_string(fdt, nodeoff, "status", "disabled"); > > + } > > +} > > + > > This should be in a separate patch as it is a generic function and > doesn't match the commit text. This is a static function only used here. If it were a public function then I would have moved it to a separate patch. Regards, Anup > > > +void fdt_imsic_fixup(void *fdt) > > +{ > > + int noff = 0; > > + > > + while ((noff = fdt_node_offset_by_compatible(fdt, noff, > > + "riscv,imsics")) >= 0) > > + fdt_domain_based_fixup_one(fdt, noff); > > +} > > + > > void fdt_plic_fixup(void *fdt) > > { > > u32 *cells; > > @@ -261,10 +289,10 @@ int fdt_reserved_memory_nomap_fixup(void *fdt) > > > > void fdt_fixups(void *fdt) > > { > > + fdt_imsic_fixup(fdt); > > + > > fdt_plic_fixup(fdt); > > > > fdt_reserved_memory_fixup(fdt); > > fdt_pmu_fixup(fdt); > > } > > - > > - > > -- > > 2.25.1 > > > > Otherwise, LGTM. > > Reviewed-by: Atish Patra <atishp@rivosinc.com> > > > -- > Regards, > Atish
diff --git a/include/sbi_utils/fdt/fdt_fixup.h b/include/sbi_utils/fdt/fdt_fixup.h index c38e5d9..77575bb 100644 --- a/include/sbi_utils/fdt/fdt_fixup.h +++ b/include/sbi_utils/fdt/fdt_fixup.h @@ -21,6 +21,18 @@ */ void fdt_cpu_fixup(void *fdt); +/** + * Fix up the IMSIC nodes in the device tree + * + * This routine disables IMSIC nodes which are not accessible to the next + * booting stage based on currently assigned domain. + * + * It is recommended that platform codes call this helper in their final_init() + * + * @param fdt: device tree blob + */ +void fdt_imsic_fixup(void *fdt); + /** * Fix up the PLIC node in the device tree * @@ -64,8 +76,9 @@ int fdt_reserved_memory_nomap_fixup(void *fdt); * General device tree fix-up * * This routine do all required device tree fix-ups for a typical platform. - * It fixes up the PLIC node and the reserved memory node in the device tree - * by calling the corresponding helper routines to accomplish the task. + * It fixes up the PLIC node, IMSIC nodes, and the reserved memory node in + * the device tree by calling the corresponding helper routines to accomplish + * the task. * * It is recommended that platform codes call this helper in their final_init() * diff --git a/lib/utils/fdt/fdt_fixup.c b/lib/utils/fdt/fdt_fixup.c index ac01ba3..c2460b8 100644 --- a/lib/utils/fdt/fdt_fixup.c +++ b/lib/utils/fdt/fdt_fixup.c @@ -52,6 +52,34 @@ void fdt_cpu_fixup(void *fdt) } } +static void fdt_domain_based_fixup_one(void *fdt, int nodeoff) +{ + int rc; + uint64_t reg_addr, reg_size; + struct sbi_domain *dom = sbi_domain_thishart_ptr(); + + rc = fdt_get_node_addr_size(fdt, nodeoff, 0, ®_addr, ®_size); + if (rc < 0 || !reg_addr || !reg_size) + return; + + if (!sbi_domain_check_addr(dom, reg_addr, dom->next_mode, + SBI_DOMAIN_READ | SBI_DOMAIN_WRITE)) { + rc = fdt_open_into(fdt, fdt, fdt_totalsize(fdt) + 32); + if (rc < 0) + return; + fdt_setprop_string(fdt, nodeoff, "status", "disabled"); + } +} + +void fdt_imsic_fixup(void *fdt) +{ + int noff = 0; + + while ((noff = fdt_node_offset_by_compatible(fdt, noff, + "riscv,imsics")) >= 0) + fdt_domain_based_fixup_one(fdt, noff); +} + void fdt_plic_fixup(void *fdt) { u32 *cells; @@ -261,10 +289,10 @@ int fdt_reserved_memory_nomap_fixup(void *fdt) void fdt_fixups(void *fdt) { + fdt_imsic_fixup(fdt); + fdt_plic_fixup(fdt); fdt_reserved_memory_fixup(fdt); fdt_pmu_fixup(fdt); } - -