diff options
| author | Philippe Mathieu-Daudé <philmd@linaro.org> | 2022-12-11 18:42:23 +0100 |
|---|---|---|
| committer | Philippe Mathieu-Daudé <philmd@linaro.org> | 2023-01-13 09:32:32 +0100 |
| commit | 391a2bdae99cb09e2cf88337898cb53385bddcc1 (patch) | |
| tree | e13d52e70e01e624b904b9571229d615a0ad8961 /hw/mips | |
| parent | 9356a2d2be024480aa7f65a598f8c8283f04faa8 (diff) | |
hw/mips/malta: Use bootloader generator API for nanoMIPS CPUs (1/5)
Similarly to how commit 0c8427baf0 ("hw/mips/malta: Use bootloader
helper to set BAR registers") converted write_bootloader(), convert
the equivalent write_bootloader_nanomips(), allowing us to modify
the bootloader code more easily in the future.
Part 1/5: Convert PCI0 MEM1 BAR setup
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20221211204533.85359-7-philmd@linaro.org>
Diffstat (limited to 'hw/mips')
| -rw-r--r-- | hw/mips/malta.c | 32 |
1 files changed, 14 insertions, 18 deletions
diff --git a/hw/mips/malta.c b/hw/mips/malta.c index b5b62e7245..a496053a9a 100644 --- a/hw/mips/malta.c +++ b/hw/mips/malta.c @@ -620,6 +620,7 @@ static void write_bootloader_nanomips(uint8_t *base, uint64_t run_addr, uint64_t kernel_entry) { uint16_t *p; + void *v; /* Small bootloader */ p = (uint16_t *)base; @@ -693,13 +694,13 @@ static void write_bootloader_nanomips(uint8_t *base, uint64_t run_addr, * * - set up PCI0 I/O BARs from 0x18000000 to 0x181fffff * - set up PCI0 MEM0 at 0x10000000, size 0x8000000 - * - set up PCI0 MEM1 at 0x18200000, size 0xbe00000 * */ stw_p(p++, 0xe040); stw_p(p++, 0x0681); /* lui t1, %hi(0xb4000000) */ #if TARGET_BIG_ENDIAN +#define cpu_to_gt32 cpu_to_le32 stw_p(p++, 0xe020); stw_p(p++, 0x0be1); /* lui t0, %hi(0xdf000000) */ @@ -742,14 +743,8 @@ static void write_bootloader_nanomips(uint8_t *base, uint64_t run_addr, stw_p(p++, 0xe020); stw_p(p++, 0x0821); /* lui t0, %hi(0xc1000000) */ - /* 0x80 corresponds to GT_PCI0M1LD */ - stw_p(p++, 0x8422); stw_p(p++, 0x9080); - /* sw t0, 0x80(t1) */ - - stw_p(p++, 0xe020); stw_p(p++, 0x0bc0); - /* lui t0, %hi(0x5e000000) */ - #else +#define cpu_to_gt32 cpu_to_be32 stw_p(p++, 0x0020); stw_p(p++, 0x00df); /* addiu[32] t0, $0, 0xdf */ @@ -792,19 +787,20 @@ static void write_bootloader_nanomips(uint8_t *base, uint64_t run_addr, stw_p(p++, 0x0020); stw_p(p++, 0x00c1); /* addiu[32] t0, $0, 0xc1 */ +#endif + v = p; - /* 0x80 corresponds to GT_PCI0M1LD */ - stw_p(p++, 0x8422); stw_p(p++, 0x9080); - /* sw t0, 0x80(t1) */ - - stw_p(p++, 0x0020); stw_p(p++, 0x005e); - /* addiu[32] t0, $0, 0x5e */ + /* setup PCI0 mem windows */ + bl_gen_write_u32(&v, /* GT_PCI0M1LD */ + cpu_mips_phys_to_kseg1(NULL, 0x1be00000 + 0x80), + cpu_to_gt32(0x18200000 << 3)); + bl_gen_write_u32(&v, /* GT_PCI0M1HD */ + cpu_mips_phys_to_kseg1(NULL, 0x1be00000 + 0x88), + cpu_to_gt32(0x0bc00000 << 3)); -#endif + p = v; - /* 0x88 corresponds to GT_PCI0M1HD */ - stw_p(p++, 0x8422); stw_p(p++, 0x9088); - /* sw t0, 0x88(t1) */ +#undef cpu_to_gt32 stw_p(p++, 0xe320 | NM_HI1(kernel_entry)); |