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hw/mips/malta: Use bootloader helper to set BAR registers

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Translate embedded assembly into IO writes which is more
readable.

Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Message-Id: <20210127065424.114125-4-jiaxun.yang@flygoat.com>
[PMD: Explode addresses/values to ease review/maintainance]
Tested-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Reviewed-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20221026191821.28167-4-philmd@linaro.org>
This commit is contained in:
Jiaxun Yang 2022-10-26 21:18:21 +02:00 committed by Philippe Mathieu-Daudé
parent fe1f2f4e92
commit 0c8427baf0
1 changed files with 37 additions and 42 deletions
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79
hw/mips/malta.c
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@ -866,56 +866,51 @@ static void write_bootloader(uint8_t *base, uint64_t run_addr,
/* Second part of the bootloader */
p = (uint32_t *) (base + 0x580);
/* Load BAR registers as done by YAMON */
stl_p(p++, 0x3c09b400); /* lui t1, 0xb400 */
/*
* Load BAR registers as done by YAMON:
*
* - set up PCI0 I/O BARs from 0x18000000 to 0x181fffff
* - set up PCI0 MEM0 at 0x10000000, size 0x7e00000
* - set up PCI0 MEM1 at 0x18200000, size 0xbc00000
*
*/
/* Bus endianess is always reversed */
#if TARGET_BIG_ENDIAN
stl_p(p++, 0x3c08df00); /* lui t0, 0xdf00 */
#define cpu_to_gt32 cpu_to_le32
#else
stl_p(p++, 0x340800df); /* ori t0, r0, 0x00df */
#define cpu_to_gt32 cpu_to_be32
#endif
stl_p(p++, 0xad280068); /* sw t0, 0x0068(t1) */
stl_p(p++, 0x3c09bbe0); /* lui t1, 0xbbe0 */
/* move GT64120 registers from 0x14000000 to 0x1be00000 */
bl_gen_write_u32(&p, /* GT_ISD */
cpu_mips_phys_to_kseg1(NULL, 0x14000000 + 0x68),
cpu_to_gt32(0x1be00000 << 3));
#if TARGET_BIG_ENDIAN
stl_p(p++, 0x3c08c000); /* lui t0, 0xc000 */
#else
stl_p(p++, 0x340800c0); /* ori t0, r0, 0x00c0 */
#endif
stl_p(p++, 0xad280048); /* sw t0, 0x0048(t1) */
#if TARGET_BIG_ENDIAN
stl_p(p++, 0x3c084000); /* lui t0, 0x4000 */
#else
stl_p(p++, 0x34080040); /* ori t0, r0, 0x0040 */
#endif
stl_p(p++, 0xad280050); /* sw t0, 0x0050(t1) */
/* setup MEM-to-PCI0 mapping */
/* setup PCI0 io window to 0x18000000-0x181fffff */
bl_gen_write_u32(&p, /* GT_PCI0IOLD */
cpu_mips_phys_to_kseg1(NULL, 0x1be00000 + 0x48),
cpu_to_gt32(0x18000000 << 3));
bl_gen_write_u32(&p, /* GT_PCI0IOHD */
cpu_mips_phys_to_kseg1(NULL, 0x1be00000 + 0x50),
cpu_to_gt32(0x08000000 << 3));
/* setup PCI0 mem windows */
bl_gen_write_u32(&p, /* GT_PCI0M0LD */
cpu_mips_phys_to_kseg1(NULL, 0x1be00000 + 0x58),
cpu_to_gt32(0x10000000 << 3));
bl_gen_write_u32(&p, /* GT_PCI0M0HD */
cpu_mips_phys_to_kseg1(NULL, 0x1be00000 + 0x60),
cpu_to_gt32(0x07e00000 << 3));
#if TARGET_BIG_ENDIAN
stl_p(p++, 0x3c088000); /* lui t0, 0x8000 */
#else
stl_p(p++, 0x34080080); /* ori t0, r0, 0x0080 */
#endif
stl_p(p++, 0xad280058); /* sw t0, 0x0058(t1) */
#if TARGET_BIG_ENDIAN
stl_p(p++, 0x3c083f00); /* lui t0, 0x3f00 */
#else
stl_p(p++, 0x3408003f); /* ori t0, r0, 0x003f */
#endif
stl_p(p++, 0xad280060); /* sw t0, 0x0060(t1) */
bl_gen_write_u32(&p, /* GT_PCI0M1LD */
cpu_mips_phys_to_kseg1(NULL, 0x1be00000 + 0x80),
cpu_to_gt32(0x18200000 << 3));
bl_gen_write_u32(&p, /* GT_PCI0M1HD */
cpu_mips_phys_to_kseg1(NULL, 0x1be00000 + 0x88),
cpu_to_gt32(0x0bc00000 << 3));
#if TARGET_BIG_ENDIAN
stl_p(p++, 0x3c08c100); /* lui t0, 0xc100 */
#else
stl_p(p++, 0x340800c1); /* ori t0, r0, 0x00c1 */
#endif
stl_p(p++, 0xad280080); /* sw t0, 0x0080(t1) */
#if TARGET_BIG_ENDIAN
stl_p(p++, 0x3c085e00); /* lui t0, 0x5e00 */
#else
stl_p(p++, 0x3408005e); /* ori t0, r0, 0x005e */
#endif
stl_p(p++, 0xad280088); /* sw t0, 0x0088(t1) */
#undef cpu_to_gt32
bl_gen_jump_kernel(&p,
true, ENVP_VADDR - 64,