From afff8800717a768c48331e4f21ba6c84710cd762 Mon Sep 17 00:00:00 2001 From: BALATON Zoltan Date: Tue, 16 Jul 2024 14:07:58 +0200 Subject: [PATCH] hw/ppc: Consolidate ppc440 initial mapping creation functions Add a utility function and use it to replace very similar create_initial_mapping functions in 440 based machines. Signed-off-by: BALATON Zoltan Reviewed-by: Edgar E. Iglesias Tested-by: Edgar E. Iglesias Signed-off-by: Nicholas Piggin --- hw/ppc/ppc440_bamboo.c | 28 +++----------------------- hw/ppc/ppc_booke.c | 10 ++++++++++ hw/ppc/sam460ex.c | 45 ++++++++++-------------------------------- hw/ppc/virtex_ml507.c | 28 +++----------------------- include/hw/ppc/ppc.h | 2 ++ 5 files changed, 28 insertions(+), 85 deletions(-) diff --git a/hw/ppc/ppc440_bamboo.c b/hw/ppc/ppc440_bamboo.c index 96d9ce65c2..a55f108434 100644 --- a/hw/ppc/ppc440_bamboo.c +++ b/hw/ppc/ppc440_bamboo.c @@ -110,29 +110,6 @@ static int bamboo_load_device_tree(MachineState *machine, return 0; } -/* Create reset TLB entries for BookE, spanning the 32bit addr space. */ -static void mmubooke_create_initial_mapping(CPUPPCState *env, - target_ulong va, - hwaddr pa) -{ - ppcemb_tlb_t *tlb = &env->tlb.tlbe[0]; - - tlb->attr = 0; - tlb->prot = PAGE_VALID | ((PAGE_READ | PAGE_WRITE | PAGE_EXEC) << 4); - tlb->size = 1U << 31; /* up to 0x80000000 */ - tlb->EPN = va & TARGET_PAGE_MASK; - tlb->RPN = pa & TARGET_PAGE_MASK; - tlb->PID = 0; - - tlb = &env->tlb.tlbe[1]; - tlb->attr = 0; - tlb->prot = PAGE_VALID | ((PAGE_READ | PAGE_WRITE | PAGE_EXEC) << 4); - tlb->size = 1U << 31; /* up to 0xffffffff */ - tlb->EPN = 0x80000000 & TARGET_PAGE_MASK; - tlb->RPN = 0x80000000 & TARGET_PAGE_MASK; - tlb->PID = 0; -} - static void main_cpu_reset(void *opaque) { PowerPCCPU *cpu = opaque; @@ -143,8 +120,9 @@ static void main_cpu_reset(void *opaque) env->gpr[3] = FDT_ADDR; env->nip = entry; - /* Create a mapping for the kernel. */ - mmubooke_create_initial_mapping(env, 0, 0); + /* Create a mapping spanning the 32bit addr space. */ + booke_set_tlb(&env->tlb.tlbe[0], 0, 0, 1U << 31); + booke_set_tlb(&env->tlb.tlbe[1], 0x80000000, 0x80000000, 1U << 31); } static void bamboo_init(MachineState *machine) diff --git a/hw/ppc/ppc_booke.c b/hw/ppc/ppc_booke.c index ca22da196a..c8849e66ff 100644 --- a/hw/ppc/ppc_booke.c +++ b/hw/ppc/ppc_booke.c @@ -31,6 +31,16 @@ #include "hw/loader.h" #include "kvm_ppc.h" +void booke_set_tlb(ppcemb_tlb_t *tlb, target_ulong va, hwaddr pa, + target_ulong size) +{ + tlb->attr = 0; + tlb->prot = PAGE_RWX << 4 | PAGE_VALID; + tlb->size = size; + tlb->EPN = va & TARGET_PAGE_MASK; + tlb->RPN = pa & TARGET_PAGE_MASK; + tlb->PID = 0; +} /* Timer Control Register */ diff --git a/hw/ppc/sam460ex.c b/hw/ppc/sam460ex.c index 1fce093ac8..78e2a46e75 100644 --- a/hw/ppc/sam460ex.c +++ b/hw/ppc/sam460ex.c @@ -213,38 +213,6 @@ static int sam460ex_load_device_tree(MachineState *machine, return fdt_size; } -/* Create reset TLB entries for BookE, mapping only the flash memory. */ -static void mmubooke_create_initial_mapping_uboot(CPUPPCState *env) -{ - ppcemb_tlb_t *tlb = &env->tlb.tlbe[0]; - - /* on reset the flash is mapped by a shadow TLB, - * but since we don't implement them we need to use - * the same values U-Boot will use to avoid a fault. - */ - tlb->attr = 0; - tlb->prot = PAGE_VALID | ((PAGE_READ | PAGE_WRITE | PAGE_EXEC) << 4); - tlb->size = 0x10000000; /* up to 0xffffffff */ - tlb->EPN = 0xf0000000 & TARGET_PAGE_MASK; - tlb->RPN = (0xf0000000 & TARGET_PAGE_MASK) | 0x4; - tlb->PID = 0; -} - -/* Create reset TLB entries for BookE, spanning the 32bit addr space. */ -static void mmubooke_create_initial_mapping(CPUPPCState *env, - target_ulong va, - hwaddr pa) -{ - ppcemb_tlb_t *tlb = &env->tlb.tlbe[0]; - - tlb->attr = 0; - tlb->prot = PAGE_VALID | ((PAGE_READ | PAGE_WRITE | PAGE_EXEC) << 4); - tlb->size = 1 << 31; /* up to 0x80000000 */ - tlb->EPN = va & TARGET_PAGE_MASK; - tlb->RPN = pa & TARGET_PAGE_MASK; - tlb->PID = 0; -} - static void main_cpu_reset(void *opaque) { PowerPCCPU *cpu = opaque; @@ -253,20 +221,27 @@ static void main_cpu_reset(void *opaque) cpu_reset(CPU(cpu)); - /* either we have a kernel to boot or we jump to U-Boot */ + /* + * On reset the flash is mapped by a shadow TLB, but since we + * don't implement them we need to use the same values U-Boot + * will use to avoid a fault. + * either we have a kernel to boot or we jump to U-Boot + */ if (bi->entry != UBOOT_ENTRY) { env->gpr[1] = (16 * MiB) - 8; env->gpr[3] = FDT_ADDR; env->nip = bi->entry; /* Create a mapping for the kernel. */ - mmubooke_create_initial_mapping(env, 0, 0); + booke_set_tlb(&env->tlb.tlbe[0], 0, 0, 1 << 31); env->gpr[6] = tswap32(EPAPR_MAGIC); env->gpr[7] = (16 * MiB) - 8; /* bi->ima_size; */ } else { env->nip = UBOOT_ENTRY; - mmubooke_create_initial_mapping_uboot(env); + /* Create a mapping for U-Boot. */ + booke_set_tlb(&env->tlb.tlbe[0], 0xf0000000, 0xf0000000, 0x10000000); + env->tlb.tlbe[0].RPN |= 4; } } diff --git a/hw/ppc/virtex_ml507.c b/hw/ppc/virtex_ml507.c index 235281e939..f378e5c4a9 100644 --- a/hw/ppc/virtex_ml507.c +++ b/hw/ppc/virtex_ml507.c @@ -67,29 +67,6 @@ static struct boot_info void *vfdt; } boot_info; -/* Create reset TLB entries for BookE, spanning the 32bit addr space. */ -static void mmubooke_create_initial_mapping(CPUPPCState *env, - target_ulong va, - hwaddr pa) -{ - ppcemb_tlb_t *tlb = &env->tlb.tlbe[0]; - - tlb->attr = 0; - tlb->prot = PAGE_VALID | ((PAGE_READ | PAGE_WRITE | PAGE_EXEC) << 4); - tlb->size = 1U << 31; /* up to 0x80000000 */ - tlb->EPN = va & TARGET_PAGE_MASK; - tlb->RPN = pa & TARGET_PAGE_MASK; - tlb->PID = 0; - - tlb = &env->tlb.tlbe[1]; - tlb->attr = 0; - tlb->prot = PAGE_VALID | ((PAGE_READ | PAGE_WRITE | PAGE_EXEC) << 4); - tlb->size = 1U << 31; /* up to 0xffffffff */ - tlb->EPN = 0x80000000 & TARGET_PAGE_MASK; - tlb->RPN = 0x80000000 & TARGET_PAGE_MASK; - tlb->PID = 0; -} - static PowerPCCPU *ppc440_init_xilinx(const char *cpu_type, uint32_t sysclk) { PowerPCCPU *cpu; @@ -139,8 +116,9 @@ static void main_cpu_reset(void *opaque) env->gpr[3] = bi->fdt; env->nip = bi->bootstrap_pc; - /* Create a mapping for the kernel. */ - mmubooke_create_initial_mapping(env, 0, 0); + /* Create a mapping spanning the 32bit addr space. */ + booke_set_tlb(&env->tlb.tlbe[0], 0, 0, 1U << 31); + booke_set_tlb(&env->tlb.tlbe[1], 0x80000000, 0x80000000, 1U << 31); env->gpr[6] = tswap32(EPAPR_MAGIC); env->gpr[7] = bi->ima_size; } diff --git a/include/hw/ppc/ppc.h b/include/hw/ppc/ppc.h index 070524b02e..8a14d623f8 100644 --- a/include/hw/ppc/ppc.h +++ b/include/hw/ppc/ppc.h @@ -119,6 +119,8 @@ enum { #ifndef CONFIG_USER_ONLY void booke206_set_tlb(ppcmas_tlb_t *tlb, target_ulong va, hwaddr pa, hwaddr len); +void booke_set_tlb(ppcemb_tlb_t *tlb, target_ulong va, hwaddr pa, + target_ulong size); #endif /* ppc_booke.c */