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-rw-r--r--hw/mips/mips_malta.c177
1 files changed, 160 insertions, 17 deletions
diff --git a/hw/mips/mips_malta.c b/hw/mips/mips_malta.c
index 2e851d9cf2..f261dd6a94 100644
--- a/hw/mips/mips_malta.c
+++ b/hw/mips/mips_malta.c
@@ -609,47 +609,190 @@ static void write_bootloader_nanomips(uint8_t *base, int64_t run_addr,
#define NM_HI1(VAL) (((VAL) >> 16) & 0x1f)
#define NM_HI2(VAL) \
- (((VAL) & 0xf000) | (((VAL) >> 19) & 0xffc) | (((VAL) >> 31) & 0x1))
+ (((VAL) & 0xf000) | (((VAL) >> 19) & 0xffc) | (((VAL) >> 31) & 0x1))
#define NM_LO(VAL) ((VAL) & 0xfff)
- stw_p(p++, 0x2800); stw_p(p++, 0x001c); /* bc to_here */
- stw_p(p++, 0x8000); stw_p(p++, 0xc000); /* nop */
- stw_p(p++, 0x8000); stw_p(p++, 0xc000); /* nop */
- stw_p(p++, 0x8000); stw_p(p++, 0xc000); /* nop */
- stw_p(p++, 0x8000); stw_p(p++, 0xc000); /* nop */
- stw_p(p++, 0x8000); stw_p(p++, 0xc000); /* nop */
- stw_p(p++, 0x8000); stw_p(p++, 0xc000); /* nop */
- stw_p(p++, 0x8000); stw_p(p++, 0xc000); /* nop */
+ stw_p(p++, 0x2800); stw_p(p++, 0x001c);
+ /* bc to_here */
+ stw_p(p++, 0x8000); stw_p(p++, 0xc000);
+ /* nop */
+ stw_p(p++, 0x8000); stw_p(p++, 0xc000);
+ /* nop */
+ stw_p(p++, 0x8000); stw_p(p++, 0xc000);
+ /* nop */
+ stw_p(p++, 0x8000); stw_p(p++, 0xc000);
+ /* nop */
+ stw_p(p++, 0x8000); stw_p(p++, 0xc000);
+ /* nop */
+ stw_p(p++, 0x8000); stw_p(p++, 0xc000);
+ /* nop */
+ stw_p(p++, 0x8000); stw_p(p++, 0xc000);
+ /* nop */
/* to_here: */
- stw_p(p++, 0x0080); stw_p(p++, 0x0002); /* li a0,2 */
+ stw_p(p++, 0x0080); stw_p(p++, 0x0002);
+ /* li a0,2 */
+
stw_p(p++, 0xe3a0 | NM_HI1(ENVP_ADDR - 64));
+
stw_p(p++, NM_HI2(ENVP_ADDR - 64));
- /* lui sp,%hi(ENVP_ADDR - 64) */
+ /* lui sp,%hi(ENVP_ADDR - 64) */
+
stw_p(p++, 0x83bd); stw_p(p++, NM_LO(ENVP_ADDR - 64));
/* ori sp,sp,%lo(ENVP_ADDR - 64) */
+
stw_p(p++, 0xe0a0 | NM_HI1(ENVP_ADDR));
+
stw_p(p++, NM_HI2(ENVP_ADDR));
- /* lui a1,%hi(ENVP_ADDR) */
+ /* lui a1,%hi(ENVP_ADDR) */
+
stw_p(p++, 0x80a5); stw_p(p++, NM_LO(ENVP_ADDR));
- /* ori a1,a1,%lo(ENVP_ADDR) */
+ /* ori a1,a1,%lo(ENVP_ADDR) */
+
stw_p(p++, 0xe0c0 | NM_HI1(ENVP_ADDR + 8));
+
stw_p(p++, NM_HI2(ENVP_ADDR + 8));
- /* lui a2,%hi(ENVP_ADDR + 8) */
+ /* lui a2,%hi(ENVP_ADDR + 8) */
+
stw_p(p++, 0x80c6); stw_p(p++, NM_LO(ENVP_ADDR + 8));
/* ori a2,a2,%lo(ENVP_ADDR + 8) */
+
stw_p(p++, 0xe0e0 | NM_HI1(loaderparams.ram_low_size));
+
stw_p(p++, NM_HI2(loaderparams.ram_low_size));
/* lui a3,%hi(loaderparams.ram_low_size) */
+
stw_p(p++, 0x80e7); stw_p(p++, NM_LO(loaderparams.ram_low_size));
/* ori a3,a3,%lo(loaderparams.ram_low_size) */
+
+ /*
+ * Load BAR registers as done by YAMON:
+ *
+ * - 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) */
+
+#ifdef TARGET_WORDS_BIGENDIAN
+
+ stw_p(p++, 0xe020); stw_p(p++, 0x0be1);
+ /* lui t0, %hi(0xdf000000) */
+
+ /* 0x68 corresponds to GT_ISD (from hw/mips/gt64xxx_pci.c) */
+ stw_p(p++, 0x8422); stw_p(p++, 0x9068);
+ /* sw t0, 0x68(t1) */
+
+ stw_p(p++, 0xe040); stw_p(p++, 0x077d);
+ /* lui t1, %hi(0xbbe00000) */
+
+ stw_p(p++, 0xe020); stw_p(p++, 0x0801);
+ /* lui t0, %hi(0xc0000000) */
+
+ /* 0x48 corresponds to GT_PCI0IOLD */
+ stw_p(p++, 0x8422); stw_p(p++, 0x9048);
+ /* sw t0, 0x48(t1) */
+
+ stw_p(p++, 0xe020); stw_p(p++, 0x0800);
+ /* lui t0, %hi(0x40000000) */
+
+ /* 0x50 corresponds to GT_PCI0IOHD */
+ stw_p(p++, 0x8422); stw_p(p++, 0x9050);
+ /* sw t0, 0x50(t1) */
+
+ stw_p(p++, 0xe020); stw_p(p++, 0x0001);
+ /* lui t0, %hi(0x80000000) */
+
+ /* 0x58 corresponds to GT_PCI0M0LD */
+ stw_p(p++, 0x8422); stw_p(p++, 0x9058);
+ /* sw t0, 0x58(t1) */
+
+ stw_p(p++, 0xe020); stw_p(p++, 0x07e0);
+ /* lui t0, %hi(0x3f000000) */
+
+ /* 0x60 corresponds to GT_PCI0M0HD */
+ stw_p(p++, 0x8422); stw_p(p++, 0x9060);
+ /* sw t0, 0x60(t1) */
+
+ 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
+
+ stw_p(p++, 0x0020); stw_p(p++, 0x00df);
+ /* addiu[32] t0, $0, 0xdf */
+
+ /* 0x68 corresponds to GT_ISD */
+ stw_p(p++, 0x8422); stw_p(p++, 0x9068);
+ /* sw t0, 0x68(t1) */
+
+ /* Use kseg2 remapped address 0x1be00000 */
+ stw_p(p++, 0xe040); stw_p(p++, 0x077d);
+ /* lui t1, %hi(0xbbe00000) */
+
+ stw_p(p++, 0x0020); stw_p(p++, 0x00c0);
+ /* addiu[32] t0, $0, 0xc0 */
+
+ /* 0x48 corresponds to GT_PCI0IOLD */
+ stw_p(p++, 0x8422); stw_p(p++, 0x9048);
+ /* sw t0, 0x48(t1) */
+
+ stw_p(p++, 0x0020); stw_p(p++, 0x0040);
+ /* addiu[32] t0, $0, 0x40 */
+
+ /* 0x50 corresponds to GT_PCI0IOHD */
+ stw_p(p++, 0x8422); stw_p(p++, 0x9050);
+ /* sw t0, 0x50(t1) */
+
+ stw_p(p++, 0x0020); stw_p(p++, 0x0080);
+ /* addiu[32] t0, $0, 0x80 */
+
+ /* 0x58 corresponds to GT_PCI0M0LD */
+ stw_p(p++, 0x8422); stw_p(p++, 0x9058);
+ /* sw t0, 0x58(t1) */
+
+ stw_p(p++, 0x0020); stw_p(p++, 0x003f);
+ /* addiu[32] t0, $0, 0x3f */
+
+ /* 0x60 corresponds to GT_PCI0M0HD */
+ stw_p(p++, 0x8422); stw_p(p++, 0x9060);
+ /* sw t0, 0x60(t1) */
+
+ stw_p(p++, 0x0020); stw_p(p++, 0x00c1);
+ /* addiu[32] t0, $0, 0xc1 */
+
+ /* 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 */
+
+#endif
+
+ /* 0x88 corresponds to GT_PCI0M1HD */
+ stw_p(p++, 0x8422); stw_p(p++, 0x9088);
+ /* sw t0, 0x88(t1) */
+
stw_p(p++, 0xe320 | NM_HI1(kernel_entry));
+
stw_p(p++, NM_HI2(kernel_entry));
- /* lui t9,%hi(kernel_entry) */
+ /* lui t9,%hi(kernel_entry) */
+
stw_p(p++, 0x8339); stw_p(p++, NM_LO(kernel_entry));
- /* ori t9,t9,%lo(kernel_entry) */
+ /* ori t9,t9,%lo(kernel_entry) */
+
stw_p(p++, 0x4bf9); stw_p(p++, 0x0000);
- /* jalrc t8 */
+ /* jalrc t8 */
}
/* ROM and pseudo bootloader
generated by cgit v1.2.3 (git 2.26.2) at 2024-12-25 16:13:39 +0000