opensbi.git/lib/utils/fdt, branch v0.9

lib: utils: Remove fdt_domain_get() function

2020-12-16T04:40:25Z

The fdt_domain_get() function is now redundant because the fdt_domains_populate() function can explicitly register new domains using the sbi_domain_register() function. Signed-off-by: Anup Patel Reviewed-by: Alistair Francis Reviewed-by: Atish Patra

lib: utils: Allow FDT domain iteration functions to fail

2020-12-16T04:40:19Z

We extend fdt_iterate_each_domain() and fdt_iterate_each_memregion() functions to allow underlying iteration function to fail. This will help us catch more domain misconfiguration issues at boot time. Signed-off-by: Anup Patel Reviewed-by: Alistair Francis Reviewed-by: Atish Patra

lib: utils: Add helper routines to populate domains from FDT

2020-12-04T15:40:44Z

We add various helper routines to populate domains, iterate domains, iterate domain memregions, and parse HART to domain assignment from the FDT. These helper routines can be used by platform support code and FDT fixup code. Signed-off-by: Anup Patel Reviewed-by: Atish Patra

lib: utils: Implement "ranges" property parsing

2020-10-23T11:49:21Z

The "reg" property in a device node may not be the correct address always. If a parent node defines a "ranges" property, the child address need to be translated with respect to parents address. If the ranges property is not present, it will just use 1:1 translation. Signed-off-by: Atish Patra Reviewed-by: Anup Patel

lib: utils: Update fdt_cpu_fixup() to use current domain

2020-10-20T08:34:51Z

The fdt_cpu_fixup() should disable a HART in DT if the HART is not assigned to the current HART domain. This patch updates fdt_cpu_fixup() accordingly. Signed-off-by: Anup Patel Reviewed-by: Atish Patra

lib: utils: Update fdt_reserved_memory_fixup() to use current domain

2020-10-20T08:34:43Z

Now that each HART is mapped to a domain having a set of memory regions, we update fdt_reserved_memory_fixup() to use domain memory regions for adding reserved memory nodes in device tree. We also change reserved memory node name prefix from "mmode_pmp" to "mmode_resv" because domain memory regions can impact other hardware configurations (such as IOPMP, etc) along with PMP. Signed-off-by: Anup Patel Reviewed-by: Atish Patra

lib: utils: Improve fdt_cpu_fixup() implementation

2020-09-16T03:35:27Z

The fdt_cpu_fixup() should work fine even if HARTs without MMU are not marked invalid by platform support code. In future, we plan to treat HARTs without MMU as valid in the generic platform support so that we can hold these HARTs in HSM STOPPED state. Signed-off-by: Anup Patel Reviewed-by: Atish Patra

lib: sbi: Remove redundant SBI_HART_HAS_PMP feature

2020-09-01T04:58:26Z

The SBI_HART_HAS_PMP feature is redundant because we already have number of PMP regions returned by sbi_hart_pmp_count(). Checking whether PMP is supported for a HART can be simply done by checking non-zero value returned by sbi_hart_pmp_count(). Signed-off-by: Anup Patel Reviewed-by: Alistair Francis Reviewed-by: Atish Patra

lib: utils: Use strncmp in fdt_parse_hart_id()

2020-07-29T06:43:51Z

Use strncmp instead of using sbi_strcmp directly in fdt_parse_hart_id() to allow compiling fdt_helper.c by external firmware. Signed-off-by: Abner Chang Reviewed-by: Atish Patra Reviewed-by: Anup Patel

lib/utils: fdt: Update FDT expand size to 1024 for reserved memory node

2020-07-06T08:35:29Z

Currently 256 bytes is used for the FDT expand size when fixing up reserved memory node. Increase it to 1024 bytes with an estimated size of 64 bytes per PMP memory region by 16 regions in total. Signed-off-by: Bin Meng Reviewed-by: Atish Patra