system/linux
system/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux synced 2024-07-22 19:21:07 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

MIPS: Loongson64: Load LS7A dtbs

Browse source 
Load correct devicetree according to PRID and PCH type.

Signed-off-by: Huacai Chen <chenhc@lemote.com>
Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Tested-by: Tiezhu Yang <yangtiezhu@loongson.cn>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
This commit is contained in:
Jiaxun Yang 2020-07-09 19:33:43 +08:00 committed by Thomas Bogendoerfer
parent 24af105962
commit 770a697c45
1 changed files with 34 additions and 22 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

56
arch/mips/loongson64/env.c
View file

@ -126,28 +126,6 @@ void __init prom_init_env(void)
loongson_sysconf.cores_per_node - 1) /
loongson_sysconf.cores_per_node;
if ((read_c0_prid() & PRID_IMP_MASK) == PRID_IMP_LOONGSON_64C) {
switch (read_c0_prid() & PRID_REV_MASK) {
case PRID_REV_LOONGSON3A_R1:
case PRID_REV_LOONGSON3A_R2_0:
case PRID_REV_LOONGSON3A_R2_1:
case PRID_REV_LOONGSON3A_R3_0:
case PRID_REV_LOONGSON3A_R3_1:
loongson_fdt_blob = __dtb_loongson64c_4core_rs780e_begin;
break;
case PRID_REV_LOONGSON3B_R1:
case PRID_REV_LOONGSON3B_R2:
loongson_fdt_blob = __dtb_loongson64c_8core_rs780e_begin;
break;
default:
break;
}
}
if (!loongson_fdt_blob)
pr_err("Failed to determine built-in Loongson64 dtb\n");
loongson_sysconf.pci_mem_start_addr = eirq_source->pci_mem_start_addr;
loongson_sysconf.pci_mem_end_addr = eirq_source->pci_mem_end_addr;
loongson_sysconf.pci_io_base = eirq_source->pci_io_start_addr;
@ -198,4 +176,38 @@ void __init prom_init_env(void)
loongson_sysconf.bridgetype = RS780E;
loongson_sysconf.early_config = rs780e_early_config;
}
if ((read_c0_prid() & PRID_IMP_MASK) == PRID_IMP_LOONGSON_64C) {
switch (read_c0_prid() & PRID_REV_MASK) {
case PRID_REV_LOONGSON3A_R1:
case PRID_REV_LOONGSON3A_R2_0:
case PRID_REV_LOONGSON3A_R2_1:
case PRID_REV_LOONGSON3A_R3_0:
case PRID_REV_LOONGSON3A_R3_1:
switch (loongson_sysconf.bridgetype) {
case LS7A:
loongson_fdt_blob = __dtb_loongson64c_4core_ls7a_begin;
break;
case RS780E:
loongson_fdt_blob = __dtb_loongson64c_4core_rs780e_begin;
break;
default:
break;
}
break;
case PRID_REV_LOONGSON3B_R1:
case PRID_REV_LOONGSON3B_R2:
if (loongson_sysconf.bridgetype == RS780E)
loongson_fdt_blob = __dtb_loongson64c_8core_rs780e_begin;
break;
default:
break;
}
} else if ((read_c0_prid() & PRID_IMP_MASK) == PRID_IMP_LOONGSON_64G) {
if (loongson_sysconf.bridgetype == LS7A)
loongson_fdt_blob = __dtb_loongson64g_4core_ls7a_begin;
}
if (!loongson_fdt_blob)
pr_err("Failed to determine built-in Loongson64 dtb\n");
}